A fast measurement method of detuning angles of laser frequency converter

Dongya Chu; Bowu Liu; Menjiya Tian; Hui Wang

doi:10.1117/12.2656487

16 December 2022 A fast measurement method of detuning angles of laser frequency converter

Dongya Chu, Bowu Liu, Menjiya Tian, Hui Wang

Proceedings Volume 12501, Seventeenth National Conference on Laser Technology and Optoelectronics; 1250112 (2022) https://doi.org/10.1117/12.2656487
Event: Seventeenth National Conference on Laser Technology and Optoelectronics, 2022, Shanghai, China

Abstract

A frequency converter is usually used in high-power laser facilities to triple the frequency of the incident laser. It consists of a KDP crystal and a KD*P crystal in series. The measurement of the detuning angles of the frequency converter is essential for improving the frequency conversion efficiency. In this paper, we propose a measurement method that uses a diverging beam to illuminate the frequency converter and get the detuning angles by analyzing the light intensity distribution of the third harmonic laser. The simulated results show that there is a strict linear relationship between the characteristic parameters and the detuning angles of frequency converter, verifying the feasibility of this method. Compared with existing measurement methods, its optical path is simple, and the single measurement time can be shortened to a few minutes from a few hours.

Citation Download Citation

Dongya Chu, Bowu Liu, Menjiya Tian, and Hui Wang "A fast measurement method of detuning angles of laser frequency converter", Proc. SPIE 12501, Seventeenth National Conference on Laser Technology and Optoelectronics, 1250112 (16 December 2022); https://doi.org/10.1117/12.2656487

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