Student Paper Award Announced!!

Session Index

Quantum Electronics

Oral session 1 – Quantum Electronics
Thursday, Dec. 4, 2014  13:30-15:00
Chair: Chao-Kuei Lee
Room: B20
13:30 - 14:00 Paper No.  2014-Thu-S0301-I002
Invited Speaker:
Han Zhang
Two-dimensional materials based nonlinear optical devices: past and future
Han Zhang,

Originating from the emerging and intensively research of graphene, there have been tremendous improvements in the area of two dimensional materials (2D) based photonics. Its unique optoelectronics characteristics and the capability of being easily stacking to multilayer heterostructures have been proved to be able to generate some novel and distinctive optoelectronic devices, such as transparent conductive films, polarizers, saturable absorbers, optical modulators, photodetectors, and so on. Recently, we have experimentally found that beyond graphene, other two-dimensional layered materials such as topological insulators, MoS2 etc. also possess wideband nonlinear optics response using Z-scan measuring technique. By using the lager two or three order nonlinear properties, we have successfully demonstrated optical modulators, wavelength converter, polarizer and so on. And By using the saturable absorption property of these 2-D materials, different types of optical saturable absorber devices have been developed for the passive mode locking, passive Q-switching or single longitudinal mode of lasers. We can conclude that it is more flexible in manufacturing desirable and given photonics devices, and the performance of novle photonics devices can also be greatly boosted. It is expected that the research of two-dimensional nano-materials photonics will be developed predominantly in optoelectronic devices applications

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14:00 - 14:15 Paper No.  2014-Thu-S0301-O003
Yu-Hsiang Lin Generation of double-peaked laser spectral compression in a dispersion-increasing fiber
Yu-Hsiang Lin,Chen-Bin Huang,

The generation of double-peaked laser spectral compression is demonstrated using a dispersion-increasing fiber (DIF). The experimental results are in excellent agreement as compared to numerical calculations.

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14:15 - 14:30 Paper No.  2014-Thu-S0301-O004
Ting-Hui Chen Bunched Soliton Evolution in Fundamentally and Harmonically Passive Mode-Locked Erbium-Doped Fiber Laser
Ting-Hui Chen,Yung-Hsiang Lin,Gong-Ru Lin,

Bunched soliton formation and evolution in the polarizer- and absorber-free erbium-doped fiber laser is investigated. Even a weak polarization dependent loss can enable the passive mode-locking and vary its order from fundamental to harmonic condition, while the soliton forms are evolved into bunched state by simply enlarging the net gain.

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14:30 - 14:45 Paper No.  2014-Thu-S0301-O009
Yen-Hsu Chou Sub-ps all-fiber all-normal-dispersion P-APM mode-locked Yb-doped fiber laser
Yen-Hsu Chou,Shang-Ying Wu,Yinchieh Lai,

An all-fiber, all-normal-dispersion, polarization –APM passive mode-locked Yb-doped fiber laser is experimentally demonstrated at the 1um wavelength. With an external grating pairs for linear pulse-width compression, the final pulse-width can be as short as 693fs.

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14:45 - 15:00 Paper No.  2014-Thu-S0301-O010
Chen-Wei Chan Bound pulse generation from passive mode-locked Yb-doped fiber laser at net normal dispersion region
Chen-Wei Chan,Ja-Hon Lin,

The bound state of multiple soliton were experimentally demonstrated from a passive mode-locked Yb-doped fiber laser based on the nonlinear polarization mechanism at net normal dispersion region through adjustment of the waveplate. After pulse compression by the external grating pairs, the compressed bound pulses below 1 ps were successfully demonstrated.

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Quantum Electronics

Poster session 1
Thursday, Dec. 4, 2014  15:00-16:20
Room: F22
14:45 - 15:30 Paper No.  2014-Thu-P0301-P001
Chien Hung Lin Award Candidate Room Temperature Mid-IR Dual Wavelength Emission in Optically Pumped InGaAsSb/AlGaAsSb QW Lasers
Chien Hung Lin,Zhi-Yang Lin,Chien-Ping Lee,

Optically pumped middle infrared (Mid-IR) dual wavelength lasers operated at room temperature were demonstrated. Two kinds of InGaAsSb/AlGaAsSb quantum well (QW) with different compositions, which were separated by a thin carrier blocking layer, were grown as active region in a single waveguide laser structure. Dual wavelength at 2.31m and 2.61m were lasing simultaneously when the optically injection is slight higher than the threshold condition.

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14:45 - 15:30 Paper No.  2014-Thu-P0301-P004
I-Te Lee Award Candidate Temperature Dependence of the Base Transit Time in Light-Emitting Transistors
I-Te Lee,Chao-Hsin Wu,

The authors demonstrate the transistor cut-off frequency and the base transit time of the LET from 25℃ to 55℃. The cut-off frequency increases and the base transit time decreases with increasing temperature due to the thermionic emission lifetime of quantum-wells at high temperature.

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14:45 - 15:30 Paper No.  2014-Thu-P0301-P005
Wei-Kun Chang Award Candidate Double-Prism Domain PPLN for Simultaneous Laser Q-switching and Optical Parametric Oscillation in a Nd:YVO4 Laser
Wei-Kun Chang,Yen-Hung Chen,Hung-Pin Chung,

We report a tunable pulsed optical parametric oscillator using a double-prism domain PPLN as simultaneously an electro-optic Q-switch and a parametric generator in a Nd:YVO4 laser. >2.3-kW peak-power eye-safe light was obtained with this system.

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14:45 - 15:30 Paper No.  2014-Thu-P0301-P008
Chen-Yu Cheng Award Candidate Broadband Terahertz Emission by two-color Laser-Induced filament in isotropic media
Chen-Yu Cheng,Chan-Shan Yang,Shuo-Hsien Cheng,Ci-Ling Pan,

Broadband terahertz (THz) Emission by two-color laser-induced filament in isotropic media, air and fused silica, are studied by the simulation of transient photocurrent model and experiments. The dependence between several parameters and the THz signal has been checked. The results of air and fused silica are compared and discussed.

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14:45 - 15:30 Paper No.  2014-Thu-P0301-P009
Chen cheih chuan Award Candidate Nonlinear Frequency Conversion by Coherently Controlled Two-Color Excitation of Isotropic Materials
Chen cheih chuan,Tsai Chun Yi,Lin Yuan Ru,Yang Chan-Shan,Chen Wei-Jan,Pan Ci Ling,

We observed the coherent effect of two kinds of nonlinear frequency conversion process. The fundamental beam (1064nm) and second harmonic beam (532nm) are used to generate the two processes in our simulation. We perform the simulation of frequency conversion by tightly focused Gaussian beam.

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14:45 - 15:30 Paper No.  2014-Thu-P0301-P012
Yi-Lun Lin Award Candidate Supercontinuum Generated by Noise-like Pulse for Ultrahigh-Resolution Optical Coherence Tomography
Yi-Lun Lin,Kuo-Sung Huang,Yi-Jing You,Zaytsev Alexey,Chih-Hsuan Lin,Ci-Ling Pan,

In this work, a light source for high resolution optical coherence tomography system was designed, constructed and studied. The center wavelength of the generated supercontinuum is 1060 nm and the FWHM of the output spectrum can exceed 320 nm. We set up a free space Michelson interferometer with both axial and lateral scanning schemes as a prototype time-domain optical coherence tomography system. The experimentally measured point spread function indicates an axial resolution of <2 μm as compared to a theoretical resolution of <1.6 μm.

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14:45 - 15:30 Paper No.  2014-Thu-P0301-P013
Dan Hua Hsieh Award Candidate Improved Carrier Injection in GaN-based VCSEL via AlGaN/GaN Multiple Quantum Barrier
Dan Hua Hsieh,Bin Cheng Lin,Hao Chung Kuo,Hong Dao Li,Simon Li,

To improve the performance of GaN-based VCSEL, AlGaN/GaN multiple quantum barrier is used to replace the conventional bulk AlGaN electron blocking layer. The laser output power shows significant improvement due to effective electron blocking ability resulted from multiple quantum barrier. This result is also observed by simulating the corresponding structure.

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14:45 - 15:30 Paper No.  2014-Thu-P0301-P016
Pei-Chun Wu Award Candidate The relationship between tumor sizes and vessel permeability in melanoma microenvironment
Pei-Chun Wu,Yu-Fang Shen,Tzu-Ming Liu,

Malignant neoplasm is the leading cause of death for 30 years in a row in Taiwan. Tumor angiogenesis is a critical factor in the growth and metastasis of most malignant neoplasms and cancer cell is considered to be associated with chemo- and radio-resistance that lead to the failure of therapies. More and more reports have shown that cancer cells can promote tumor angiogenesis and maintain their differentiation with the help of endothelium cells [1]. However, the dynamic interplay between the tumor angiogenesis environment and the growth of cancer cells in vivo is yet a complex unresolved subject. The purpose of this study is to time-course investigate the biology of cancer cells in vivo in the context of tumor angiogenesis. The mCherry regulatory melanoma stable cells were implanted into C57BL/6-c2J mice ears and were in vivo monitored by nonlinear optical microscopy. In order to study the relationship between tumor sizes and vessel permeability, we track the tumor growth in mice and inject the 150-kDa (the radius is about 8 nm) dextran labeled with fluorescein in the different tumor stages to examine the vessel permeability. The result demonstrates that the vessels permeability rate will increase with tumor size.

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Paper No.  2014-Thu-P0301-P017
Chih-Kai Chiang High Q/V plasmonic hybrid gap-mode nanocavities with Bragg grating reflectors
Chih-Kai Chiang,Pi-Ju Cheng,Yi-Cheng Chung,Chien-Wei Wu,Chung-Hao Tien,Tzy-Rong Lin,

We analyze a hybrid plasmonic nanocavity containing a silicon grating NW near a metal surface with a gain gap between. For such cavity with a short cavity length at wavelength λ = 1550 nm, a high quality factor near 550 and ultrasmall modal volume lower than 0.0019 (λ/n)3 are achievable.

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Paper No.  2014-Thu-P0301-P020
Lun-Yang Lu Nonresonatly-pumped Exciton-polariton condensates in 1-D periodic potential
Lun-Yang Lu,Shih-Da Jheng,Szu-Cheng Cheng,Wen-Feng Hsieh,

We consider nonresonatly-pumped excitonpolariton condensates in 1-D periodic potential. By analyzing the band structure of the system, we found that gap solitons form at the edge of the Brillouin zones when pumped nonuniformly.

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Paper No.  2014-Thu-P0301-P021
Yu-Shan Chiu Effect of time delay in semiconductor laser with optoelectronic feedback and optical feedback
Yu-Shan Chiu,Yu-Shan Juan,

Dynamical characteristics of semiconductor lasers subject to both optoelectronic feedback and optical feedback are investigated by numerical simulation. The electrical power spectrum of individual system with undesired side peaks resulted from corresponding frequency of the delay loop can be eliminated by the applying another system with different time delay. Furthermore, under proper adjustment of the loop delay time, the main frequencies of power spectrum are changed correspondingly.

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Quantum Electronics

Oral session 2 - Quantum Electronics
Thursday, Dec. 4, 2014  15:30-17:00
Chair: Kuei-Huei Lin,Ray-Kuang Lee
Room: B20
15:30 - 15:45 Paper No.  2014-Thu-S0302-O001
Chi-Cheng Yang Award Candidate Composition Ratio Detuned Si1-xGex Saturable Absorber for Passively Mode-Locked Fiber Laser
Chi-Cheng Yang,Yung-Hsiang Lin,Gong-Ru Lin,

Composition ratio detuned nonstoichiometric Si1-xGex saturable absorber for generating the passively mode-locked fiber laser is investigated. The Si1-xGex film with less Ge concentration possesses less optical absorption, which can reduce the mode-locking threshold to produce the passively mode-locked erbium-doped fiber laser with a pulsewidth of 340 fs.

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15:45 - 16:00 Paper No.  2014-Thu-S0302-O002
YUN WU Award Candidate 980nm Resonant Cavity Light Emitting Transistors with dielectric distributed Bragg reflectors
YUN WU,Chao-Hsin Wu,

Demonstration of the active region in the resonant cavity (Resonant Cavity LET) is proposed in this paper. In order to enhance the FWHM and bandwidth of the RCLET, extra 8 pairs of TiO2/SiO2 DBRs are deposited. As a consequence, the optical confinement and spontaneous recombination lifetime is enhanced by Purcell effect.

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16:00 - 16:15 Paper No.  2014-Thu-S0302-O005
Wei-Hsuan Liang Award Candidate Observation of crescent wave in VCSEL with elliptical ring
Wei-Hsuan Liang,Zhe-Han Zhang,Tsu-Chi Chang,Ying-Yu Lai,Ya-Chen Li,Tien-Chang Lu,Ray-Kuang Lee,

We experimentally generate crescent wave on the surface of vertical cavity surface emitting laser (VCSEL). The corresponding lasing characteristics including near/far field are also verified. Our results provide a special method to study optical surface waves.

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16:15 - 16:30 Paper No.  2014-Thu-S0302-O006
Hong-Yu Chen Award Candidate Characterization of octave-spanning continuum generated from multiple SiO2 plates
Hong-Yu Chen,Yu-Jung Tsou,Chih-Hsuan Lu,A. H. Kung,Shang-Da Yang,

We demonstrate using polarization-gating cross-correlation frequency-resolved optical gating (PG-XFROG) to characterize ultrafast pulses with an octave-spanning continuous spectrum.

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16:30 - 16:45 Paper No.  2014-Thu-S0302-O010
Bo-Han Chen Award Candidate Generation of Intense Supercontinuum in Condensed Media
Bo-Han Chen,Chih-Hsuan Lu,Yu-Jung Tsou,Hong-Yu Chen,Yu-Chen Cheng,Shang-Da Yang,Ming-Chang Chen,Chia-Chen Hsu,A. H. Kung,

A new approach for supercontinuum generation in solid media has been demonstrated that expands the spectrum from 450 nm to 980 nm at the -20 dB intensity level, with conversion efficiency of 54%. The pulse is verified to be phase coherent and could be compressed to a few femtosecond isolated pulse by FROG and spectral interferometric measurements.

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16:45 - 17:00 Paper No.  2014-Thu-S0302-O011
Cheng-Jhih Luo Award Candidate An environmentally stable FM mode-locked Er-doped fiber soliton laser with a sigma-type cavity
Cheng-Jhih Luo,Sheng-Min Wang,Yinchieh Lai,

In this work, we experimentally demonstrate an environmentally stable 10 GHz ps hybrid FM mode-locked Er-doped fiber soliton laser that can produce stable single and bound soliton pulse trains with a sigma-type fiber cavity configuration.

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Quantum Electronics

Poster Session 2
Thursday, Dec. 4, 2014  16:40-17:50
Room: F22
17:00 - 17:45 Paper No.  2014-Thu-P0302-P001
JerShien Chen Output Waveform Stability Analysis in Two-Section DFB Self-Pulsating Lasers
JerShien Chen,

Relationship among output waveforms and maintaining stability for self-pulsating two-section distributed feedback laser is analyzed under different laser structure factors: cavity length, line-width enhancement factor, and facet phase shift. The oscillation stability analysis criteria are also discussed different to the existed papers.

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17:00 - 17:45 Paper No.  2014-Thu-P0302-P002
Yonan Su Stabilize Control of modulation instability in photorefractive crystal
Yonan Su,

By experimental measurement and theoretical analysis, we demonstrate the control of modulation instability in nonlinear media. Appearance and suppression of modulation are observed in a series of spontaneous optical patterns as the intensity of input coherent beam increases, with different bias voltages and different background field intensity.

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17:00 - 17:45 Paper No.  2014-Thu-P0302-P003
Chen Xing You Stabilize Townes solitons by a tilted dipole-dipole interaction
Chen Xing You,

By tilting the angle of dipole-dipole interaction with respect to the confined Bose-Einstein condensate trapped in a two-dimensional (2D) potential, we reveal the possibility to stabilize a 2D soliton by suppressing the Townes soliton instability. Due to the long-ranged and anisotropic interaction, it is the non-definite positive spectrum, which compensates the instability induced by the short-ranged nonlinearity.

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17:00 - 17:45 Paper No.  2014-Thu-P0302-P004
MING-XUAN LIU Implementation of semiconductor laser driver with high current stability

The design of a stable constant current source by using MOSFET as the current control device for driving the semiconductor laser diode is described. Adopting high precision and low temperature shift of circuit element, the short term stability of driver current source can reach 6.87×10^-6 .This high stability current driver for semiconductor laser diode satisfies interferometry application.

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17:00 - 17:45 Paper No.  2014-Thu-P0302-P005
Tsung-Han Tsai Growth and Characterization of Amorphous Silicon Quantum Dots in Si-rich Silicon Oxide
Tsung-Han Tsai,Yen-Pu Chen,Ming-Yi Lin,Yao-Hong You,Wing-Kit Choi,Hoang-Yan Lin,

Silicon quantum dots (Si-QDs) are attractive for many promising applications in silicon photonics. This paper presents a controlled synthesis of amorphous Si QDs (a-Si QDs) embedded in Si-rich SiOx (SRO) film grown by PECVD system and post-annealing. The formation and quantum confinement effect (QCE) of a-Si QDs embedded in SRO film grown with relatively low annealing temperature (300℃) are demonstrated.

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Quantum Electronics

Oral session 3 - Semiconductor Photonics
Friday, Dec. 5, 2014  08:00-09:30
Chair: Sheng-Kwang Hwang,Hsu-Cheng Hsu
Room: B20
08:00 - 08:15 Paper No.  2014-FRI-S0303-O001
Teny-Yi Shoeh Type-II GaSb/GaAs-quantum-dot-based circular-phonotic-crystal nanocavity laser with long photon lifetime and high Purcell factor
Teny-Yi Shoeh,Kung-Shu Hsu,Chih-Chi Chang,W. H. Lin,C. T. Lin,S. Y. Lin,M. H. Shih,

In this study, type-II GaSb/GaAs quantim dot circular phonotic crystal laser was demonstrated. Lasing action was achieved with wavelength around 961 nm at 150 K temperature. Not only long photon lifetimes were measured by time-result photonluminescence technique but also high Purcell factor were observed when QD emission coupled into high-Q photonic crystal cavity mode.

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08:15 - 08:30 Paper No.  2014-FRI-S0303-O002
Cheng-Jhih Luo Dual wavelength lasing of a 10 GHz active mode-locked semiconductor optical amplifier fiber laser by EO phase modulation
Kuang-ting Yen,Cheng-Jhih Luo,Yinchieh Lai,

An active mode-locked SOA fiber laser with the repetition rate of 10 GHz is demonstrated by EO phase modulation. The laser can be operated under the single wavelength state and the dual wavelength state with the adjustment of pump current and light polarization. Its application for measuring fiber dispersion is also demonstrated.

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08:30 - 08:45 Paper No.  2014-FRI-S0303-O005
Yen-Mo Wu Single ZnO nanowire lasing at ultraviolet wavelength enhanced by surface plasmon resonance
Yen-Mo Wu,Chun-Ting Yang,Yu-Hsun Chou,Bo-Tsun Chou,Chih-Kai Chiang,Tzy-Rong Lin,Sheng-Di Lin,Tien-Chang Lu,

To realize the destination of optical integrated circuits, miniaturizing optical device which can generate high intensity coherent sources appeals to many people to research. In this study, we report surface plasmonic lasers comprised of 5nm silica gap layer between ZnO nanowire and silver film. The lasing wavelength is located at the region of interband absorption of silver. In this region, the refractive index of silver varies sharply, as a result, the group index is large. Owning large group index means photons can effectively interact with gain medium and surface plasmon.

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08:45 - 09:00 Paper No.  2014-FRI-S0303-O006
Zhe Han Zhang Characteristics of III-N vertical cavity surface emitting lasers with lateral confinement apertures
Zhe Han Zhang,Ying Yu Lai,Yu Hsun Chou,Yu Sheng Wu,Tsu Chi Chang,Shen Che Huang,Tsung Lin Ho,Tien Chang Lu,

We investigated GaN-based vertical cavity surface emitting lasers (VCSELs) with an optical confinement aperture, and verified the transverse optical confinement characteristics using shallow etched mesa in the GaN-based VCSEL.

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09:00 - 09:15 Paper No.  2014-FRI-S0303-O009
Sheng-An Yang 40 Gb/s electroabsorption modulator–integrated DFB laser by two stack of multiple quantum well
Sheng-An Yang,Yi-Jhe Chen,Wei-hung Chen,Chia-Yan Lin,Jui-pin Wu,Yi-Jen Chiu,W. Lin,Y. H. Wu,R. T. Hsu,

Two stacks of multiple quantum wells have been used for integrating electroabsorption modulator (EAM) and DFB laser. Traveling wave electrode is designed for high speed operation, leading to SMSR of above 35dB, -3dB bandwidth of above 40GHz, and 40Gb/s performance.

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09:15 - 09:30 Paper No.  2014-FRI-S0303-O010
P.-C. Yeh Fabrication of enhancement-mode AlGaN/GaN MOSFETs with PEALD and PEC oxide
P.-C. Yeh,J.-H. Hung,B.-R. Lin,L.-H. Peng,

We reported the use of PEC-Ga2O3 for gate-oxide and PEALD-Al2O3 for passivation on AlGaN/GaN MOS-HEMT to achieve on/off ratio of 10^10. Our method allows Vth to increase from -4V to -1.77V by increasing oxide thickness while keeping gm and Id,sat unchanged. Device-parameter-extraction suggests this device could become enhancement-mode as PEC-oxide exceeds 18.5nm.

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Quantum Electronics

Oral session 4 - Quantum Electronics
Friday, Dec. 5, 2014  09:30-11:00
Chair: Ming-chang Chen
Room: B20
09:30 - 10:00 Paper No.  2014-FRI-S0304-I001
Invited Speaker:
Guo-Zhong Zhao
Terahertz Time-Domain Spectroscopy and Its Applications in CNU
Guo-Zhong Zhao,

Terahertz time-domain spectroscopy (THz-TDS) system and the related technology and its applications in capital normal university (CNU) are presented. Most often used THz-TDS system as a spectroscopic measurement setup in our lab is introduced in detail, including THz radiation source, THz detection method and its measurement and control system. THz spectra of some materials measured in CNU is summarized and discussed. These materials include but not limited to two kinds of typical matter - the illegal drugs and the explosives, the biological macro-molecules, the cosmetics and the fine chemical materials, the edible pigments and the food additives, the homocysteic acid and related compounds, the heavy ions in soil, the Chinese medicines, the tobacco and crops, the oil and chemical products, the carbon nanotubes, the superconductors, and various semiconductors and their heterojunctions, are presented. THz emission from InAs and InN semiconductor surface are compared. THz spectral investigation of metallic mesh structures is summarized. Finally, an outlook of THz spectroscopic application on metamaterials characteristic is presented briefly.

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10:00 - 10:15 Paper No.  2014-FRI-S0304-O001
Hung-Wei Sun Attochirp-free high-order harmonic generation beyond the atomic unit pulse duration
Hung-Wei Sun,Ming-Chang Chen,

We theoretically demonstrate a clear and straightforward approach, which just relies on a simple DC spatially gradient electric potential, for robustly generating bright chirp-free attosecond pulses of electromagnetic radiation throughout the soft X-ray region of the spectrum with pulse durations in the single-digit attosecond range.

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10:15 - 10:30 Paper No.  2014-FRI-S0304-O004
Kung-Hsuan Lin Observation of Strong optical Second Harmonic Generation from Suspended Graphene
Kung-Hsuan Lin,Shao-Wei Weng,Po-Wei Lyu,Tsong-Ru Tsai,Wei-Bin Su,

An ideal freestanding graphene in air is centrosymmetric in three dimensions, and its optical second harmonic generation is inhibited. However, we found strong second harmonic generation from suspended single-layer graphene, and attributed this observation to curved sheet in the long range.

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10:30 - 10:45 Paper No.  2014-FRI-S0304-O005
I-Feng Chang Maximum Extractable Energy for High-Power Pulsed Fiber Amplifier with Stimulated Raman Scattering
I-Feng Chang,

A numerical study of maximum extractable energy for Ytterbium-doped high-power pulsed fiber laser amplifiers is presented. The influence of stimulated Raman scattering on amplified processes is considered. The simulation results show the criterions of seed energy and width to suppress Stokes waves. Optimized experimental parameters are suggested in this contribution.

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10:45 - 11:00 Paper No.  2014-FRI-S0304-O008
Po-Shu Wu Generation of intense broadband short wavelength continuum based on multiple plates of fused silica
Po-Shu Wu,Le-Fan Chen,Chih-Hsuan Lu,Shih-Yu Yang,A.H. King,

A 800 nm Ti: sapphire laser is transferred to a transform limit 400 nm by SHG through the BBO crystal. We passed the 400 nm light through a set of fused silica plates to generate a broadband continuum ranging from 320 nm to 480 nm by four-wave mixing and filamentation.

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Quantum Electronics

Poster Session 3
Friday, Dec. 5, 2014  11:00-12:10
Room: F22
11:00 - 12:00 Paper No.  2014-Fri-P0303-P001
Bao-Jen Shih Diffraction efficiency spectral behavior of PQ-PMMA VBG under different writing conditions
Bao-Jen Shih,Yu-Hua Hsieh,Te-Yuan Chung,

The diffraction efficiency spectrum of PQ-PMMA volume Bragg grating (VBG) depends on the absorption coefficient and refractive index modulation of PQ-PMMA. The peak diffraction efficiency can shift more than 0.2 nm from the intended written wavelength.

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11:00 - 12:00 Paper No.  2014-Fri-P0303-P002
Chen Chuan Wen A tunable dual single longitudinal modes laser using two transmission PQ-PMMA VBGs
ChenChuan Wen,

A tunable dual single longitudinal modes laser is built using two homemade PQ-PMMA volume Bragg gratings (VBG) as the wavelength selecting and spectral narrowing elements. The laser can achieve the wavelength tunning range more than 10 nm without damage the PQ-PMMA VBGs.

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11:00 - 12:00 Paper No.  2014-Fri-P0303-P003
Yao-Cheng Tien Theories of an Effective Single Quantum Dot Implemented by Electrostatically-Gated Asymmetric Coupled Quantum Wells
Yao-Cheng Tien,Neil Na,

We present the modeling of dipolar exciton ground state in AlGaAs asymmetric coupled quantum wells in an external electric field induced two-dimensional electrostatic trap. It is shown that a stable spontaneous emission can be obtained where its radiative lifetime approaches 50 ps.

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11:00 - 12:00 Paper No.  2014-Fri-P0303-P004
Cheng-Yeh Kuo Passive mode-locking of a diode-pumped Nd:GdVO4 laser based on cascaded second-order nonlinearity
Po-Chun Liu,Cheng-Yeh Kuo,Shou-Tai Lin,

A continuous-wave mode-locking laser system via positive cascaded second-order Kerr lens (CSKL) at 1063 nm was demonstrated. An average power of 3.49 W is obtained under 19.5 W diode power at 808 nm. The pulse repetition rate, and the pulse duration are 175.44 MHz, and 18 ps, respectively.

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11:00 - 12:00 Paper No.  2014-Fri-P0303-P005
Hung Lin Quantum Transport Simulation by Considering Phonon Scattering in Semiconductor Devices
Hung Lin,Yuh-Renn Wu,

In this paper, a simulation program using Non- Equilibrium Greens function formalism with electron-phonon (acoustic and polar optical phonon) is developed for studying carrier transport with energy relaxation. The result shows thatthe carrier energy of the current density would be broadened after applying the scattering. The result suggests that a proper scattering consideration should be considered in most quantum transport model.

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11:00 - 12:00 Paper No.  2014-Fri-P0303-P006
H.P. Chung Theoretical and Experimental Characterization of Finite-Beam Bragg Diffraction in PPLN Electro-Optic Grating
H.P. Chung,J. W. Chang,W. K. Chang,Y.H. Chen,

We report the study of the finite-beam Bragg diffraction behavior of an electro-optic volume grating made of a PPLN crystal. The experimental observations show that the diffraction mode pattern and diffraction efficiency of the PPLN EO Bragg device are closely related to the interaction beam size and applied voltage.

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11:00 - 12:00 Paper No.  2014-Fri-P0303-P007
YEN HUNG Wang Antiphase dynamics in a bipolarized Nd:YAG laser with pump modulation
YEN HUNG Wang,Kun Guei Hong,Ming Dar Wei,

When the interaction of orthogonally polarised modes with the active medium occurs, the low-frequency relaxation oscillation for antiphase mode will be generated. This work demonstrates the dynamics corresponding to pump modulation frequency approaching to this low frequency. The relationship of average frequency of chaotic signal between in-phase and anti-phase oscillation were studied.

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11:00 - 12:00 Paper No.  2014-Fri-P0303-P008
Yu-Chen Cheng Modeling of Multiple Plate Continuum Generation
Yu-Chen Cheng,Yuan-Yao Lin,Chih-Hsuan Lu,A. H. Kung,

We used the nonlinear Schrödinger equation to model the process of continuum generation using multiple thin plates. The result is compared with experiments done with an 800 nm femtosecond laser pulse.

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17:15 - 17:45 Paper No.  2014-Fri-P0303-P009
Ta-Wei PENG The Nonlinear Optics of Graphene Saturable Absorber Measured by Z-scan Technique
Ta-Wei PENG,Wan-Lin Chen,Pi Ling Huang,Chao-Yung Yeh,Wood-Hi Cheng,

Graphene thin-films were prepared by CVD method with different layers and measured by Z-scan technique. Results showed that nonlinear absorption was due to saturation of single photon absorption. Under the intensity of 21.3 GW/cm2, 1- and 8-layer graphene showed the nonlinear absorption coefficient α(I) of 1.342 and 0.043 (10^8 m-1).

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17:15 - 17:45 Paper No.  2014-Fri-P0303-P010
Ting-Yuan Chang GaN-based photonic quasi-crystal surface-emitting lasers
Ting-Yuan Chang,Kuo-Bin Hong,Chih-Cheng Chen,Tien-Chang Lu,

In this study, GaN-based photonic quasi-crystal surface emitting lasers (PQCSELs) were fabricated and analyzed. The device for Γ5 mode exhibited the lowest threshold pumping energy density of 4.6 mJ/cm2. The tendency of calculated gains was consistent with the experiment results. We concluded that the PQCSEL had the opportunity to acquire lower threshold energy density than conventional PCSEL if it operated at special band-edge mode.

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17:15 - 17:45 Paper No.  2014-Fri-P0303-P011
Yung-Hsiang Lin SPM and GVD Managed Erbium-doped Fiber Laser Mode-Locked by Graphene Nano-Sheet
Yung-Hsiang Lin,Chun-Yu Yang,Gong-Ru Lin,

Self-phase modulation (SPM) and group delay dispersion (GDD) managed erbium-doped fiber laser (EDFL) mode-locked with few-layer graphene nano-sheet is demonstrated to optimize the soliton compression at a negative GDD region.

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17:15 - 17:45 Paper No.  2014-Fri-P0303-P012
Shih-Shian Lin Ytterbium-Doped Fiber Ring Laser in Forward and Backward Pumping Configurations
Shih-Shian Lin,Shih-Ting Lin,Yao-Wun Jhang,Jia-Ming Liu,

The characteristic difference between forward- and backward-pumped ytterbium-doped fiber laser is investigated. In the forward pumping scheme, the over-pumping power can be reused in the next cycle to enhance the gain in the fiber cavity. Therefore, higher output power and slope can be obtained.

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17:15 - 17:45 Paper No.  2014-Fri-P0303-P013
Sheng-Wen Huang High-power Femtosecond Pulse Generation in a Chirped-Pulse Amplified Ytterbium-Doped Fiber Laser System
Sheng-Wen Huang,Yue-Ying Li,Yi-Jing You,Chih-Hsuan Lin,Alexey Zaytsev,Chi-Luen Wang,Ci-Ling Pan,

In this paper, we demonstrated the chirped pulse amplification (CPA) of a high-power ytterbium-doped fiber amplifier at wavelength of 1064 nm without a stretcher. The all-normal dispersion (ANDi) passively mode-locked fiber laser is used to generate highly chirped seed pulse. Further, the compressed-pulse was frequency doubled by a type-I critically phase-matched (CPM) Lithium Triborate (LBO) crystal. With 370 mW of fundamental light, we can generate 88 mW of green output (λ= 532 nm) with conversion efficiency of 23%.

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17:15 - 17:45 Paper No.  2014-Fri-P0303-P014
Chih-Hsien Cheng SixC1-x saturable absorber mode-locked fiber lasers with varying C/Si composition ratio
Chih-Hsien Cheng,Gong-Ru Lin,

The silicon carbide saturable absorbers with varying C/Si composition ratios are employed to passively mode-lock the fiber laser for compressing the pulsewidth from 400 fs to 360 fs with a time-bandwidth product of 0.317 when varying the SixC1-x from the stoichiometric to C-rich condition.

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17:15 - 17:45 Paper No.  2014-Fri-P0303-P015
Chun-Ping Lin Optical nonlinear properties of Gold-Nanoparticle Films investigated by Z–scan
Chun-Ping Lin,Ming-Chan Shieh,Tsong-Ru Tsai,Shih-Chieh Hung,Shien-Der Tzeng,

We used Z-scan without aperture technique to measurement the nonlinear optical absorption properties of gold-nanoparticle films. We use sample is 3-Mercaptopropionic acid (MPA). Those gold-nanoparticle films was comprised by diameter 12nm with two layers(MPA1) and three layers(MPA2). And those samples’ UV-Visible absorption characteristics show in Figure. Then we studied those samples at off-resonant wavelengths and the result of fitting data are showing in table . Our laser light source is mode-locked femtosecond Ti:sapphier laser(790nm,120fs).

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Paper No.  2014-Fri-P0303-P016
Sheng-Jhu Wang Nonlinear Optical Properties of Fused Silica
Sheng-Jhu Wang,Ben-Jhe Lin,Tsong-Ru Tsai,

We reported that spectrally-resolved two-beam coupling [1] using a mode-locked Ti:sapphire laser produces reliable measurements of the nonlinear responses of fused silica. The nonlinear index of refraction of fused silica n_2=3.18×〖10〗^(-20) m2/W. Figures 1, 2 show experiment results on fused-silica at 780 and 800nm, respectively.

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Quantum Electronics

Oral session 6 - Quantum Electronics
Friday, Dec. 5, 2014  15:40-17:10
Chair: Kwan-Wei Su
Room: B20
15:45 - 16:00 Paper No.  2014-FRI-S0305-O002
YuanYao Lin Nonlinear wave dynamics in a media with anomalous laser-induced group velocity dispersion
YuanYao Lin,

A nonlinear system with chirp depending disperion is modelled and nonlinear wave dynamics therein is investigated. One stable unchirped soliton and one unstable chirped soliton families are supported. Potentially efficient spectral and pulse compression devices are proposed.

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16:00 - 16:15 Paper No.  2014-FRI-S0305-O003
Ming-Hsien Lin Investigation on laser noise improvements during the spectral compression process
Ming-Hsien Lin,Chen-Bin Huang,

Laser noise properties such as amplitude jitter and timing jitter during spectral compression process are experimentally characterized. Our results show that improvement on amplitude jitter can be achieved for all input pulse chirp values, while improvement on timing jitter is limited to negatively input chirps.

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16:15 - 16:30 Paper No.  2014-FRI-S0305-O006
TSUNG-YU YANG Generation of Broad Green Comb from Chirped Nonlinear Photonic Crystals

Green frequency comb generation from 510 to 555nm spectral range was reported on chirp-PPLN with mode spacing 450GHz same as the pump QPM-OPO frequency comb due to the concurrence of multi-wavelength SHG and SFG processes.

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16:30 - 16:45 Paper No.  2014-FRI-S0305-O007
Zia uddin Effect of coherence and higher-order modes of partially coherent light fields on negative and positive Goos-H$\ddot{\text a}$nchen shifts
Zia uddin,

The negative and positive Goos-Hanchen (GH) shifts in the reflected light is investigated for a partial coherent light incident on a cavity containing a four-level Raman gain medium. The effect of spatial coherence and higher-order modes of partial coherent light fields is studied on the negative and positive GH shifts.

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16:45 - 17:00 Paper No.  2014-FRI-S0305-O010
Ya Tang Chuang Room-temperature exciton-polariton lasing in a ZnO microrod
YaTang Chuang,TzuYang Chao,HsiangKai Lin,HsuCheng Hsu,

We verify that the observations of exciton-polariton lasing effects in a ZnO microrod investigated by angle-resolved micro-photoluminescence spectroscopy at room temperature. Above threshold, the exciton-polariton condensation can be observed in dispersion spectra at k//=0. The results of Young’s double-slit experiment show the spatial coherence properties of the microcavity polaritons.

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17:00 - 17:00 Paper No.  2014-FRI-S0305-O011
Chi-Chneg Chen Manipulation and all-optical self-referenced measurement of full-vectorial frequency comb
Chi-Chneg Chen,Shang-Da Yang,

We demonstrated an integrated system that can manipulate and measure full-vectorial frequency combs (the optical field of ultimate complexity in time domain) without any reference.

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