Experienced Professor with a demonstrated history of working in the consumer and higher education industry. Strong research professional skilled in Optical Engineering including Digital Micromirror Device based Lidar, MEMS lidar, Holographic Lidar, AR/VR display engine, Micro optics fabrications, Nanotechnology, X-ray Detectors, Computer Generated Holograms, Lens System and Optical Design, Photonics Device Design, Interferometry and Holography.
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As alternatives to the binary phase modulation, we propose and experimentally evaluated high-speed beam steering by DMD based on light recycling. In our experiment, with binary phase modulation mode, system output efficiency reaches 8%. It can be doubled to 16% with light recycling method. Efficiency is still low compared to the reported value of 27% without light recycling. To further increase beam efficiency, system loss was analysed.
Previously, we presented the theory of cavity enhanced HDSS, the experimental effect of enhancement on readout, and the lack of effects on Bragg Selectivity. We have now formalized the enhancement in writing power and experimentally evaluated the improvement in writing speed over conventional means for writing a single plane wave hologram in Fe:LiNbO3 with a 532 nm wavelength, CW, single mode, DPSS, Nd:YAG, laser with a cavity on one of the writing arms. The diffraction efficiency was read during the recording by using a 632.8 nm wavelength HeNe Laser. We found that the enhancement of recording power for this configuration asymptotically approaches a factor of two, while the use of cavities in both writing arms provides a power enhancement which is limited only by the losses in the cavities.
Design and implementation of recording and readout system for micro-holographic optical data storage
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