Stray light analysis of basic model Gaussian beam

Zhaofeng Cen; Xiaotong Li; Zhiping He; Qihua Zhu; Qingquan Zhang

doi:10.1117/12.481750

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5 September 2002 Stray light analysis of basic model Gaussian beam

Zhaofeng Cen, Xiaotong Li, Zhiping He, Qihua Zhu, Qingquan Zhang

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Proceedings Volume 4914, High-Power Lasers and Applications II; (2002) https://doi.org/10.1117/12.481750
Event: Photonics Asia, 2002, Shanghai, China

Abstract

In this paper, based upon the general law oftransmission ofbasic model Gaussian beam, the reflection and refraction of laser at optical surfaces are analyzed respectively. Using the complex parameters of Gaussion beam, a simple algorithm for researching stray light and ghosts caused by Gaussian beam is presented. Depending on the algorithm, a dynamic data structure of tree which can describe the stray light of the system is built, an energy density superposition algorithm based on the distribution of complex amplitude of Gaussian beam is discussed, and a stray light and ghost analysis software for basic model Gaussian beam is developed. It can be seen from given example that the method describes completely the transmission of basic model Gaussian beam in optical systems and the ghost distribution. For given conditions (e.g. the maximum reflection times), the total energy density of Gaussian beam at certain position in optical systems with high accuracy could be calculated.

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Zhaofeng Cen, Xiaotong Li, Zhiping He, Qihua Zhu, and Qingquan Zhang "Stray light analysis of basic model Gaussian beam", Proc. SPIE 4914, High-Power Lasers and Applications II, (5 September 2002); https://doi.org/10.1117/12.481750

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