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15:40 - 15:55
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Paper No. 2014-FRI-S0106-O003
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| Chun-Wei Lin
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Chiral Planar Metamaterial Based on Modified U-Shaped Split-ring Resonators
Chun-Wei Lin,Jia-Han Li,Tony Wenn-Han Sheu,
The transmissions and reflections of the chiral metamaterial based on U-shaped SRRs with an island at the base side under right and left circular polarized waves are analyzed. It is found that the chiral properties can be tuned by controlling the position and the size of the island.
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15:55 - 16:10
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Paper No. 2014-FRI-S0106-O004
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| Yung-Jen Yang
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Plasmonic Behaviors of Metallic AZO Material
Yung-Jen Yang,Kun-Da Zhong,Jia-Yu Lin,Po-Tsung Lee,
Transparent conducting oxide (TCO) such as aluminum-doped zinc oxide (AZO) is a suitable candidate for low-loss metallic material in the near-infrared (NIR) region. In this study, AZO films and nanodisk arrays are fabricated to investigate the plasmonic behaviors of the metal-like transparent material in the NIR region.
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16:10 - 16:25
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Paper No. 2014-FRI-S0106-O009
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| Yongfu Cai
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Strong circularly polarized light by aperture antenna with triple V-grooves structure
Yongfu Cai,Soushi Ikeda,Katsuji Nakagawa,Hiroshi Kikuchi,Naoki Shimidzu,Takayuki Ishibashi,
We proposed a new kind of aperture antenna with triple V-grooves structure that could generate enhanced circularly polarized light with an intensity enhancement larger than 1800 times as compared with that of incident light, and the influence of groove angle and length as well as wavelength had been investigated.
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16:25 - 16:40
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Paper No. 2014-FRI-S0106-O010
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| Chiang Tsai Ching
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Surface-plasmon-enhanced band-edge emission and lasing behaviors of Au-decorated ZnO microstructures
ChiangTsai Ching,ChiuCing Yu,DaiTsen Fang,HsuHsu Cheng,
We demonstrate that the band edge emission and lasing threshold of the ZnO submicron spheres can be improved by the surface plasmon effect of Au nanoparticles. The near-band-edge emission can be enhanced and the defect-related emission is completely suppressed. The lasing threshold of ZnO submicron spheres with Au coating can be reduced by 50 %. The enhanced lasing emission property is attributed to the resonance coupling between the surface plasmon and the optical transition in ZnO.
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16:40 - 16:55
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Paper No. 2014-FRI-S0106-O014
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| Shu Wei Liao
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Room temperature lasing characteristics in metal-coated GaN shallow grating and spiral structures
ShuWei Liao,MinHsiung Shih,HaoChung Kuo,
We demonstrated a metal-coated GaN spiral structure lasing at room temperature with the threshold power density of 17 W/cm2 under circularly polarized pumping condition. The emission wavelength is approximately 363 nm. This phenomenon could be attributed to the surface plasmon polaritons.
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16:55 - 17:10
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Paper No. 2014-FRI-S0106-O015
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| Ching-Fu Chen Chen
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Generation of Optical Near-field Orbital Angular Momentum in Gold Metasurface under Linearly-polarized Excitation
Ching-Fu Chen Chen,Chen-Ta Ku,Ming-Yang Pan,Pei-Kuen Wei,Chen-Bin Huang,
Nanocavities inscribed in a gold thin film is optimized and arranged to form a metasurface. We demonstrate both numerically and experimentally that surface plasmon vortex carrying orbital angular momentum can be generated under linearly-polarized optical excitation.
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