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Proceedings Paper

Correction of the phase distortion for high power laser by freeform shape mirror
Author(s): Gang Wang; Xiaojun Tang; Jianfeng Ren; Qitai Huang; Wentao Wang
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Paper Abstract

The wavefront can keep stable while the laser system is adjusted well. Based on this characteristic, in order to improve the beam quality, we suggest to make mirror of free-form surface to compensate for the laser wavefront aberration. First, the theory of aberration compensated with free-form shape mirror is introduced, then through computer simulation, the mirror’s capability of is discussed, lastly, the mirror is used by laser system which the average output power is 12.5KW. By the using of free-form shape mirror, laser’s wavefront, beam quality of farfield and intensity of nearfield are improved obviously: the intensity of nearfield F is improved from 0.15 to 0.39; the wavefront’s PV is improved from 6.3μm to 1.7μm; the wavefront’s rms is improved from 2.0μm to 0.4μm; the beam quality of farfield β is improved from 5.25 to 1.8. Compared with deformable mirror of adaptive optics, the free-form shape mirror has its own advantage: low cost; with no increase to laser system complication; the free-from shape mirror can be used to compensated for high order wavefront aberration effectively.

Paper Details

Date Published: 9 November 2016
PDF: 12 pages
Proc. SPIE 10016, High-Power Lasers and Applications VIII, 100160J (9 November 2016); doi: 10.1117/12.2244600
Show Author Affiliations
Gang Wang, Science and Technology on Solid State Laser Lab. (China)
Xiaojun Tang, Science and Technology on Solid State Laser Lab. (China)
Jianfeng Ren, SuZhou Univ. (China)
Qitai Huang, SuZhou Univ. (China)
Wentao Wang, Science and Technology on Solid State Laser Lab. (China)

Published in SPIE Proceedings Vol. 10016:
High-Power Lasers and Applications VIII
Ruxin Li; Upendra N. Singh; Robert F. Walter, Editor(s)

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