Deflection of phase change cooled mirror induced by irregular facula

sun feng; yu wen feng; cheng zu hai; zhang yao ning; zhou ci ming

Volume 15 Issue 04

Apr. 2003

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shen feng, zhang xue-jun, jiang wen-han. Effects of signal induced background (SIB) of image intensifier on centroid measurement of low-level-light target and the method of SIB noise suppression [J]. High Power Laser and Particle Beams, 2002, 14.

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sun feng, yu wen feng, cheng zu hai, et al. Deflection of phase change cooled mirror induced by irregular facula[J]. High Power Laser and Particle Beams, 2003, 15.

Citation:

sun feng, yu wen feng, cheng zu hai, et al. Deflection of phase change cooled mirror induced by irregular facula[J]. High Power Laser and Particle Beams, 2003, 15.

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Deflection of phase change cooled mirror induced by irregular facula

1.
State Key Laboratory of Laser Technology,Huazhong University of Science and Technology,Wuhan 430074,China

Publish Date: 2003-04-15

Abstract

Abstract

In order to solve the optical axis deflection owing to asymmetric thermal deformation of mirror induced by irregular facula, phase change cooled mirror, which takes the place of normal silicon mirror, is presented to minimize PV value of deformation on mirror surface and mirror deflection. Online tests are carried out on 2kW CW carbon dioxide laser. The experimental results indicate that: Compared with normal silicon mirror, phase change cooled mirror achieves more uniform temperature field on surface. It can diminish angle of mirror deflection and centroid drift, and improve the beam quality in the far field.
- high power laser,
- optical quality,
- irregular facula,
- angle deflection

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