Impact of mirror local defects on system scattering in telescopes

Liu, Zhongkai; Wang, Jincheng; Leng, Rongkuan; Wang, Xiaokun; Zhang, Min; Wang, Jing; Cai, Mengxue; Li, Wenhan; Liu, Bin; Li, Lingzhong; Cheng, Qiang; Li, Longxiang; Luo, Xiao; Zhang, Xuejun

doi:10.1016/j.rinp.2023.107265

Cited by 1 publication

(1 citation statement)

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“…Interference testing cannot be performed when the crosstalk fringes are significant. Many studies on incoherent stray lights in optical systems and related simulation software have been conducted [6][7][8][9]; however, no simulation software is available for the interference compensation testing of coherent stray lights [10]. There is little research in this field, and existing studies have been unable to obtain specific information on the size and intensity of crosstalk fringes.…”

Section: Introductionmentioning

confidence: 99%

Research on Coherent Stray Light Fringes in Interference Compensation Testing

Sun,

Cheng,

et al. 2024

Photonics

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Testing accuracy is an essential factor in determining the manufacturing accuracy of aspheric mirrors. Because of the complexity of the null compensation test, the coherent stray lights generated by multiple reflections and transmissions between optical elements and the crosstalk fringes generated by the multi-beam interference of the reference light, test light, and stray lights are superimposed on the interference fringes, resulting in reduced testing accuracy. Focusing on this problem, a simulation analysis method for crosstalk fringes based on ray-tracing and multi-beam interference in interference testing is proposed. The coordinates, amplitudes, and phases of the test light and stray lights on the transmission sphere are traced, and the crosstalk fringes and interference testing fringes and their positions, sizes, and intensity information are simulated via multi-beam interference. The influence of crosstalk fringes on interference fringes is determined. An experimental optical path is built to verify the correctness of the crosstalk fringe simulation method.

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Section: Introductionmentioning

confidence: 99%