Thermal blooming of HEL in the nonflowing beam tube

Sanhong Wang; Xiaojun Xu; Zhongfu Jiang

doi:10.1117/12.481689

5 September 2002 Thermal blooming of HEL in the nonflowing beam tube

Sanhong Wang, Xiaojun Xu, Zhongfu Jiang

Proceedings Volume 4926, Adaptive Optics and Applications II; (2002) https://doi.org/10.1117/12.481689
Event: Photonics Asia, 2002, Shanghai, China

Abstract

Thermal blooming is one of the most important factors, which make the beam diffused and cause the decline of laser intensity on the object. This paper presents a method to reduce thermal blooming of high-energy laser (HEL) in the beam tube and compares two models describing the thermal blooming. Helium has the qualities of low absorption coefficient, high thermal conductivity and low index of refraction, and can be used as the medium through which HEL beam propagates. The condensations of thermal conduction model and acoustic wave model are evaluated respectively. Results show the method is practicable, and two models' applicable ranges are got.

Citation Download Citation

Sanhong Wang, Xiaojun Xu, and Zhongfu Jiang "Thermal blooming of HEL in the nonflowing beam tube", Proc. SPIE 4926, Adaptive Optics and Applications II, (5 September 2002); https://doi.org/10.1117/12.481689

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