Research on characteristics of multidimensional polarization smoothing

Yanghui Tang; Shenlei Zhou; Shouying Xu; Cheng Liu

doi:10.1117/12.3015486

22 December 2023 Research on characteristics of multidimensional polarization smoothing

Yanghui Tang, Shenlei Zhou, Shouying Xu, Cheng Liu

Proceedings Volume 12974, Fifth International Symposium on High Power Laser Science and Engineering (HPLSE 2023); 129740P (2023) https://doi.org/10.1117/12.3015486
Event: Fifth International Symposium on High Power Laser Science and Engineering, 2023, Suzhou, China

Abstract

Polarization smoothing (PS) can effectively improve the uniformity of the focal spot by changing the polarization distribution of the beam. In this paper, a technical scheme for achieving multidimensional PS by cascading birefringent wedge (BW) has been proposed. A near-field and far-field diffraction transmission model with multiple PS and a continuous phase plate (CPP) was first constructed, and parameters such as the wedge angle and placement position of BW are optimized through theoretical analysis to increase the number of sub-focal spots on the target plane and change the distribution direction. Then one-dimensional (1-D) power spectral density (PSD) and root mean square (RMS) were used to quantify the difference in the focal spot uniformity in different directions, the results show that the cascaded BW not only ensures the smoothing effect of a single BW, but also has a smoothing performance in a specific frequency band at specific wedge angles.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Yanghui Tang, Shenlei Zhou, Shouying Xu, and Cheng Liu "Research on characteristics of multidimensional polarization smoothing", Proc. SPIE 12974, Fifth International Symposium on High Power Laser Science and Engineering (HPLSE 2023), 129740P (22 December 2023); https://doi.org/10.1117/12.3015486

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