This paper develops a calibration system. Because the collimating lens is not required to scan, this system can rapidly perform light beam collimation testing and calibration.

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It is difficult to implement optical scanning holography in the coherent mode for the scattered object because the light scattered from the object is extremely weak. In the paper we successfully acquired such coherent-mode scanning holograms.

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We presented a method to improve the image quality of the diffractive phase-shift patterns (PSPs) which were generated by diffractive optical elements implemented by a spatial light modulator. By temporally integrating a sequence of diffraction patterns degraded with speckles, the speckles were suppressed and the destructive line became clearly observed.

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This work demonstrates a resolution enhancement method for synthetic aperture digital holography based on spectrum normalization technique. Experimental results indicate that the spatial resolution and signal-to-noise ratio of the synthesized reconstructed image are improved simultaneously under low numbers of the acquired holograms.

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In2Se3 crystals show black shiny for a-phase and red to yellow for the r-phase. The a-In2Se3 achieves wide-energy-range photoelectric conversion owing to the existence of surface oxide (oxygen detection). The a←→r inter-phase transition promote feasible applications of r-In2Se3 suitable for optical-memorial sensing and memory devices.

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We present a method to design programmable Fresnel lenslet array (PFLA) which is used as the input to an liquid-crystal-on-silicon spatial light modulator (LCoS-SLM) for projecting 2D/3D light-spot images. The system can be adopted for the applications such as 3D imaging and head-up displays.

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We present a method to create a Kinoform CGH which is made from the 3D computer graphic models composed of 2D polygons. The analytical approach is used to avoid complicated FFT computation for reducing time consuming. In addition, the optical reconstruction of the synthesized CGH is demonstrated.

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In this paper, we proposed a novel recording method of polarization-selective volume holograms with a large diffraction angle. The hologram is sandwiched between two 45°-90°-45° prisms and can easily record the interference fringes in the recording material with only one beam.

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A 3D translation stage which meets the requirement of the next-generation lithography is proposed. With the help of Michelson interferometer, accuracy of the presented setup better than 1 nanometer is achievable.

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Extended depth of field (EDoF) can expand the acquisition volume of an image system. However, the performance of EDoF was constrained by the imperfect of the input image. In this study, we proposed an algorithm to lower the flaws caused during the EDoF acquisition process by computational scheme.

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This research uses the minimum average correlation energy method and shifted training images to recognize the polychromatic images based on Mach-Zehnder joint transform correlator. It leads to that the correlation output peak is much sharper and the input is proper to the liquid crystal device of input plane. In our former research, the training images are displayed at the center position. However, the total sidelobe energy may not be the minimum. In order to solve the problem, we transform the color image into three HSL color space components. Then, three components are rotated from 0° to 360° in steps of 5° and shifted from -5 to 5 pixels in both of vertical and the horizontal directions to yield training images. The system can deal with rotated images.

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We transform a color image into three YIQ color space components. Via the utilization of Mach-Zehnder joint transform correlator, the minimum average correlation energy method, shifted training images, and computation, we will obtain the reference functions of the minimum sidelobe energy and record the relevant data.

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In this study, we developed a novel temperature sensor with holographic plate and integrated the sensor into a precision heterodyne interferometer. Based on measurement results, the resolution of proposed method can be reached 0.2 C.

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