Scaling Laws of Thermal Blooming Effect of Repetitively Long Pulse Laser

ZHANG Pengfei1 QIAO Chunhong1 FENG Xiaoxing1 LI Nan1 HUANG Tong1 FAN Chengyu1 WANG Yingjian1

(1.Key Laboratory of Atmospheric Composition and Optical Radiation, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, Anhui, China 230031)

【Abstract】Thermal distortion parameters are proposed to evaluate the intensity of thermal blooming effect of repetitively long pulse laser. A numerical simulation model of thermal blooming effect of repetitively long pulse laser is established, and experiments are carried out. By comparing the simulation results with the experimental results, we find that the experimental results agree well with the simulation results in terms of spot shape and size, which verifies the reliability of the mathematical-physical model of repetitively long pulse laser and the simulation algorithm. On this basis, the quantitative relationships between the spot expansion and the thermal distortion parameters caused by the thermal blooming effect of repetitively long pulse laser, namely, scaling laws of thermal blooming effect of repetitively long pulse laser, are obtained by a large number of numerical simulations under different atmosphere parameters and launching system parameters.

【Keywords】 atmospheric optics; scaling laws; numerical simulation; repetitively long pulse laser; thermal blooming effect;

【DOI】

【Funds】 National Natural Science Foundation of China (61405205)

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This Article

ISSN:0253-2239

CN: 31-1252/O4

Vol 37, No. 10, Pages 9-14

October 2017

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Article Outline

Abstract

  • 1 Introduction
  • 2 Mathematical-physical model of the thermal blooming effect of repetitively long pulse laser
  • 3 Scaling law of atmospheric transmission of repetitively long pulse laser
  • 4 Conclusion
  • References