High-contrast detection of z-cut lithium niobate by using radially polarized light

Yang Han Sr.; Hongfei Zhang Sr.; Kebin Shi Sr.

doi:10.1117/12.3036401

22 November 2024 High-contrast detection of z-cut lithium niobate by using radially polarized light

Yang Han Sr., Hongfei Zhang Sr., Kebin Shi Sr.

Author Affiliations +

Proceedings Volume 13238, Advanced Optical Imaging Technologies VII; 132380V (2024) https://doi.org/10.1117/12.3036401
Event: SPIE/COS Photonics Asia, 2024, Nantong, Jiangsu, China

Conference Poster

Abstract

Periodically poled lithium niobate (PPLN) is an optical crystal with excellent performance, featuring a large electro-optic coefficient and high nonlinear optical coefficient. Recently, several ultrahigh SHG and THG conversion efficiencies utilizing z-cut PPLN were demonstrated. To detect the domain structure of z-cut PPLN, the radially polarized light is used. This allows for enhanced domain wall detection signal in lithium niobate. We demonstrated that imaging using radially polarized light can achieve a contrast ratio of 0.83, which is only 0.71 for linearly polarized light. This technology is expected to pave the way for the promotion of integrated optical devices.

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

Citation Download Citation

Yang Han Sr., Hongfei Zhang Sr., and Kebin Shi Sr. "High-contrast detection of z-cut lithium niobate by using radially polarized light", Proc. SPIE 13238, Advanced Optical Imaging Technologies VII, 132380V (22 November 2024); https://doi.org/10.1117/12.3036401

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