Beam Deflection Control Technology Based on Liquid Crystal Spatial Light Modulator

It is proposed in this paper to use phase only liquid crystal spatial light modulators to realize non-mechanical lateral and axial confocal microscopic laser scanning. With a phase only liquid crystal spatial light modulator used as a scanner to realize laser beam deflection, a confocal microscopic lateral beam scanning system is designed. A zoom illuminating lens is formed by incorporating a liquid crystal spatial light modulator along the confocal illumination light path, and thus the focus of the objective lens is axially shifted to realize the axial non-mechanical scanning. The theoretical analyses indicate that phase only liquid crystal spatial light modulators can be used to realize non-mechanical 3D confocal microscopic laser scanning.

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High Performance Liquid Crystal on Silicon Spatial Light Modulator (LCOS-SLM) and Flicker Noise Reduction of Multiple Spots

Proceedings of the International Display Workshops ◽

10.36463/idw.2019.lct6-5l ◽

2019 ◽

pp. 282

Author(s):

Hiroshi Tanaka ◽

Hiroto Sakai ◽

Munenori Takumi ◽

Haruyoshi Toyoda

Keyword(s):

Liquid Crystal ◽

Noise Reduction ◽

High Performance ◽

Spatial Light Modulator ◽

Flicker Noise ◽

Light Modulator ◽

Liquid Crystal On Silicon

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Polychromatic correction for aberration in the lenses of telescopic systems using liquid crystal optically addressed spatial light modulator

10.1117/12.321662 ◽

1998 ◽

Cited By ~ 1

Author(s):

Vladimir A. Berenberg ◽

Alexey Leshchev ◽

Michael V. Vasil'ev ◽

Vladimir Y. Venediktov

Keyword(s):

Liquid Crystal ◽

Spatial Light Modulator ◽

Light Modulator

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

Science ◽

10.1126/science.aaw6747 ◽

2019 ◽

Vol 364 (6445) ◽

pp. 1087-1090 ◽

Cited By ~ 64

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.

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