Analysis of nonlinear self-focusing phenomenon in high-power laser system based on ray-tracing

作者：Wang Weiwei^*; Li Xiaotong; Cen Zhaofeng; Zhang Luwei

来源：Conference on High-Power Lasers and Applications VII, 2014-10-09 To 2014-10-11.

DOI：10.1117/12.2071845

• high power laser system
• nonlinear effect
• beam quality
• ray tracing
• light propagation simulation

In high power laser systems, nonlinear effect, one of the key factors of beam wavefront aberration and even irreversible damage to system, has always been one of the top considerations of researchers for decades. A hybrid ray-tracing method for both linear media and nonlinear media based on geometric optics is presented in this paper and realized by programming. In a simple optic system with KDP crystal, an obvious decline of beam quality is observed in high laser power density conditions and a method taking component intervals as compensation of beam quality is proved feasible. Considering the complexity of traditional modeling method based on surfaces, a modeling method based on components is established. Hopefully, the conclusions and flaws of this paper can shed light on relevant work and further research.

• 出版日期2014
• 单位现代光学仪器国家重点实验室; 浙江大学