High-resolution digital holographic imaging by using a spatial light modulator

2014 ◽  
Author(s):  
Bin Li ◽  
Da-Yong Wang ◽  
Yun-Xin Wang ◽  
Lu Rong
Keyword(s):  
High Resolution ◽  
Spatial Light Modulator ◽  
Light Modulator ◽  
Holographic Imaging

scholarly journals Phase-only transmissive spatial light modulator based on tunable dielectric metasurface

Science ◽  
2019 ◽  
Vol 364 (6445) ◽  
pp. 1087-1090 ◽  
Author(s):  
Shi-Qiang Li ◽  
Xuewu Xu ◽  
Rasna Maruthiyodan Veetil ◽  
Vytautas Valuckas ◽  
Ramón Paniagua-Domínguez ◽  
...  
Keyword(s):  
High Resolution ◽  
Spatial Light Modulator ◽  
Deflection Angle ◽  
Beam Steering ◽  
Beam Deflection ◽  
Spatial Light Modulators ◽  
Light Modulator ◽  
Steering Angle ◽  
Holographic Display ◽  
Light Modulators

Rapidly developing augmented reality, solid-state light detection and ranging (LIDAR), and holographic display technologies require spatial light modulators (SLMs) with high resolution and viewing angle to satisfy increasing customer demands. Performance of currently available SLMs is limited by their large pixel sizes on the order of several micrometers. Here, we propose a concept of tunable dielectric metasurfaces modulated by liquid crystal, which can provide abrupt phase change, thus enabling pixel-size miniaturization. We present a metasurface-based transmissive SLM, configured to generate active beam steering with >35% efficiency and a large beam deflection angle of 11°. The high resolution and steering angle obtained provide opportunities to develop the next generation of LIDAR and display technologies.

High-Resolution Correction of Arbitrary Wavefront Aberration Using Liquid Crystal Spatial Light Modulator

2011 ◽  
Vol 121-126 ◽  
pp. 877-881
Author(s):  
Hong Xin Zhang ◽  
Xiao Xi Xu
Keyword(s):  
Liquid Crystal ◽  
High Resolution ◽  
Spatial Light Modulator ◽  
Low Cost ◽  
Phase Conjugation ◽  
Astronomical Observation ◽  
Wavefront Aberration ◽  
Strehl Ratio ◽  
Light Modulator ◽  
Wavefront Correction

Wavefront correction plays significant role in some fields like astronomical observation, laser processing and medical imaging, etc. Liquid crystal spatial light modulator ( LC SLM) is an ideal device for high-resolution wavefront correction because of its low cost, low consumption, large number of pixels and independent programming control of each unit. It is researched experimentally that LC SLM is used as a wavefront correction device and corrects arbitrary wavefront aberration. Wavefront correction is performed based on phase conjugation and periodic phase modulation with modulo-2π. The experimental results show that the PV value of the irregular wavefront aberration is 1.56λ, RMS value is 0.25 and Strehl ratio is 0.08 before correction, but the PV value of the residual aberration is reduced to 0.26λ, RMS value is 0.02 and Strehl ratio is increased to 0.97 which is approximated diffraction limit after correction. It is proved to be feasible and effective that LC SLM is used to the high-precision and high-resolution wavefront correction.

Liquid crystal high-resolution optically addressed spatial light modulator using a nanodimensional chalcogenide photosensor

2014 ◽  
Vol 39 (7) ◽  
pp. 2048 ◽  
Author(s):  
Miri Gelbaor Kirzhner ◽  
Matvey Klebanov ◽  
Victor Lyubin ◽  
Neil Collings ◽  
I. Abdulhalim
Keyword(s):  
Liquid Crystal ◽  
High Resolution ◽  
Spatial Light Modulator ◽  
Light Modulator

Development of high-resolution active matrix spatial light modulator

2018 ◽  
Vol 57 (06) ◽  
pp. 1 ◽  
Author(s):  
Yong-Hae Kim ◽  
Chi-Young Hwang ◽  
Ji Hun Choi ◽  
Jae-Eun Pi ◽  
Jong-Heon Yang ◽  
...  
Keyword(s):  
High Resolution ◽  
Spatial Light Modulator ◽  
Light Modulator ◽  
Active Matrix
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