Designing of converging stray light focal spot absorber in high power laser system

Tian-ran Zheng; Fang Wang; De-en Wang; Xi-bo Sun; Hong-jie Liu; Liang-ming Chen; Dong-xia Hu

doi:10.1117/12.2539705

8 July 2019 Designing of converging stray light focal spot absorber in high power laser system

Tian-ran Zheng, Fang Wang, De-en Wang, Xi-bo Sun, Hong-jie Liu, Liang-ming Chen, Dong-xia Hu

Proceedings Volume 11063, Pacific Rim Laser Damage 2019: Optical Materials for High-Power Lasers; 1106317 (2019) https://doi.org/10.1117/12.2539705
Event: Pacific Rim Laser Damage 2019 and Thin Film Physics and Applications 2019, 2019, Qingdao, China

Abstract

In high power solid-state laser facilities, stray lights may do great damage to optical glass and metal structure and affect the transmission of the main laser and the environment cleanliness inside the facility. On the other hand, the stray may also form noise signal of the main laser pulse and affect the output quality. There are mature solutions for the controlling and absorption of parallel and divergent stray light^[2]. However there are no reliable solution for the absorption of the converging stray light near its focal spot. An absorber design are proposed using multiple materials and small angle light cone. And this design can realize effective absorption of the stray light focal spot with the peak fluence up to 40J/cm2.

Citation Download Citation

Tian-ran Zheng, Fang Wang, De-en Wang, Xi-bo Sun, Hong-jie Liu, Liang-ming Chen, and Dong-xia Hu "Designing of converging stray light focal spot absorber in high power laser system", Proc. SPIE 11063, Pacific Rim Laser Damage 2019: Optical Materials for High-Power Lasers, 1106317 (8 July 2019); https://doi.org/10.1117/12.2539705

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