Abstract

The crucial zero-order light due to the pixelation effect of spatial light modulator (SLM) has been a serious issue in the field of light modulation, especially in applications with a high numerical aperture optical system. In this investigation, we report that by properly adjusting the high-level and low-level pixel voltages of an SLM, the zero-order light caused by the pixelation effect of an SLM can be significantly eliminated. The method is further validated under an inverted fluorescence microscope. The experimental results show that the zero-order light can be inhibited up to 91.3%, accompanied by an improvement of the modulation efficiency from 77.5% to 92.6%.

© 2023 Optica Publishing Group

Non-iterative multifold strip segmentation phase method for six-dimensional optical field modulation

Yueqiang Zhu, Wei Zhao, Chen Zhang, Kaige Wang, and Jintao Bai
Opt. Lett. 47(6) 1335-1338 (2022)

Low voltage blue phase liquid crystal for spatial light modulators

Fenglin Peng, Yun-Han Lee, Zhenyue Luo, and Shin-Tson Wu
Opt. Lett. 40(21) 5097-5100 (2015)

Continuous amplitude-modulated meta-fork gratings with zero-order extinction

Xin Shan, Zile Li, Liangui Deng, and Qi Dai
Opt. Lett. 45(7) 1902-1905 (2020)

Electrically tunable metasurface for dual-band spatial light modulation using the epsilon-near-zero effect

Tanmay Bhowmik and Debabrata Sikdar
Opt. Lett. 47(19) 4993-4996 (2022)

High-speed optical pulse shaping based on programmable lithium niobate spatial light modulators

Fengchao Ni, Honggen Li, Haigang Liu, Yuanlin Zheng, and Xianfeng Chen
Opt. Lett. 48(4) 884-887 (2023)