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13 November 2014 Verification and analysis of stray light in high-power laser system
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In the high-power laser system, the stray light which is generated by the surface’s residual reflection of optical elements and the multi-pass transmission in the system will lead to temperature increase in part of the system, the optical elements deformation and damage, distortion of wave-front and change of the beam’s divergence angle, which seriously influence the beam’s quality and propagation properties and damage the components in the system. So, it is very important to use the relevant software to analyze the stray light rigorously because the reliability and precision of the software is the guarantee of reliable results. Through two types of software we performed the simulation of the stray light in the system, including ghost’s distribution in the case of different states of rotating defocusing, beam’s pointing. Simultaneously, the impact of processing and assembling errors is analyzed in details. We built a specialized experiment to verify the reliability of results of the software and the related parameters of system are conveniently measured with the device.
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PingXian Huang, Zhaofeng Cen, Xiaotong Li, and Yuan Jin "Verification and analysis of stray light in high-power laser system", Proc. SPIE 9276, Optical Metrology and Inspection for Industrial Applications III, 92761L (13 November 2014);

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