Browsing by Author "Yang, Jhou-Pu"

Now showing 1 - 2 of 2

Characterization of the spatially anamorphic phenomenon and temporal fluctuations in high-speed, ultra-high pixels-per-inch liquid crystal on silicon phase modulator
(2019-10-28)
Yang, Jhou-Pu
;
Wu, Feng-Ping
;
Wang, Pei-Sin
;
Chen, Huang-Ming Philip
;
光電工程學系
High-birefringence liquid crystal (LC) in ultrathin LCOS panels was adopted to prepare high phase precision (mSTD =lambda/50) and phase accuracy (mAPAE%similar to 8%) with suppressed pixel-level crosstalk effects. In conjunction with optimized digital driving scheme, the zero order light loss was found directly related to the phase accuracy error. Meanwhile, the world's fastest pure phase modulation LCOS with a response time of similar to 0.87 ms at 45 degrees C was also achieved. The low-temporal flicker (P-P similar to 2.0%) with high-speed LC responses was demonstrated by applying new digital driving scheme. Finally, the 4K2 K LCOS-SLM (similar to 7000 PPI) was evaluated its difficulties and opportunities. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
Pursuing High Quality Phase-Only Liquid Crystal on Silicon (LCoS) Devices
(2018-11-01)
Chen, Huang-Ming Philip
;
Yang, Jhou-Pu
;
Yen, Hao-Ting
;
Hsu, Zheng-Ning
;
Huang, Yuge
Fine pixel size and high-resolution liquid crystal on silicon (LCoS) backplanes have been developed by various companies and research groups since 1973. The development of LCoS is not only beneficial for full high definition displays but also to spatial light modulation. The high-quality and well-calibrated panels can project computer generated hologram (CGH) designs faithfully for phase-only holography, which can be widely utilized in 2D/3D holographic video projectors and components for optical telecommunications. As a result, we start by summarizing the current status of high-resolution panels, followed by addressing issues related to the driving frequency (i.e., liquid crystal response time and hardware interface). LCoS panel qualities were evaluated based on the following four characteristics: phase linearity control, phase precision, phase stability, and phase accuracy.