Diffraction efficiency control of liquid crystal polymer polarizing grating film layer through grating layer thinning

Qipeng Fang; Yongmo Lv; Tao Tan; Zhanjun Yan; Jianjun Chen; Xiuhui Sun; Chao Hu; Shaoyun Yin

doi:10.1117/12.3023676

30 April 2024 Diffraction efficiency control of liquid crystal polymer polarizing grating film layer through grating layer thinning

Qipeng Fang, Yongmo Lv, Tao Tan, Zhanjun Yan, Jianjun Chen, Xiuhui Sun, Chao Hu, Shaoyun Yin

Author Affiliations +

Proceedings Volume 13156, Sixth Conference on Frontiers in Optical Imaging and Technology: Imaging Detection and Target Recognition; 131561O (2024) https://doi.org/10.1117/12.3023676
Event: Sixth Conference on Frontiers in Optical Imaging Technology and Applications (FOI2023), 2023, Nanjing, JS, China

Abstract

Liquid crystal polymer polarizing gratings have been widely studied in augmented reality optical waveguide displays due to their nearly 100% diffraction efficiency, large angular bandwidth, and wavelength bandwidth. The thickness of each area of the grating film layer prepared by the existing film production method (spin coating) is the same, which is unfavorable for uniform imaging of large-format liquid crystal polymer polarized grating optical waveguides. This paper proposes a method of etching and thinning the grating film layer to achieve specific efficiency modulation. The experimental values and simulated values are in good agreement, providing a reference for segmented control of the efficiency of large-format liquid crystal polymer polarization gratings.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Qipeng Fang, Yongmo Lv, Tao Tan, Zhanjun Yan, Jianjun Chen, Xiuhui Sun, Chao Hu, and Shaoyun Yin "Diffraction efficiency control of liquid crystal polymer polarizing grating film layer through grating layer thinning", Proc. SPIE 13156, Sixth Conference on Frontiers in Optical Imaging and Technology: Imaging Detection and Target Recognition, 131561O (30 April 2024); https://doi.org/10.1117/12.3023676

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