Laser conditioning technique of mid-size laser spot

Zheng Yi; Liu Zhichao; Ma Ping; Chen Songlin; Zhang Qinghua

doi:3180

Volume 25 Issue 12

Dec. 2013

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Article Navigation > High Power Laser and Particle Beams > 2013 > 25(12): 3180-3184

Deng Wenhui, Tang Caixue, Chen Xianhua, et al. Path segment division and feed-rate solution in ion beam figuring[J]. High Power Laser and Particle Beams, 2013, 25: 3292-3296. doi: 3292

Citation:

Zheng Yi, Liu Zhichao, Ma Ping, et al. Laser conditioning technique of mid-size laser spot[J]. High Power Laser and Particle Beams, 2013, 25: 3180-3184. doi: 3180

Deng Wenhui, Tang Caixue, Chen Xianhua, et al. Path segment division and feed-rate solution in ion beam figuring[J]. High Power Laser and Particle Beams, 2013, 25: 3292-3296. doi: 3292

Citation:

Zheng Yi, Liu Zhichao, Ma Ping, et al. Laser conditioning technique of mid-size laser spot[J]. High Power Laser and Particle Beams, 2013, 25: 3180-3184. doi: 3180

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Laser conditioning technique of mid-size laser spot

doi: 3180

1.
Fine Optical Engineering Research Center,Chengdu 610041,China

Received Date: 2013-09-11
Rev Recd Date: 2013-09-30
Publish Date: 2013-12-15

Abstract

Abstract

A novel laser conditioning method based on mid-size laser spot is introduced. A Nd:YAG laser with 10 J max energy output at 1064 nm is adopted to form a 5 mm, fluence-qualified beam spot. Compared with the small-size spot type, this method has significant advantage in time saving. Experimental setup is built for verification. First, laser scanning and damage testing are carried out on small samples. The results demonstrate an obvious effect of laser conditioning, and the best flowchart for large-aperture optics is also verified. Furthermore, the conditioning experiment to large-aperture optics with reflective film prepared by hafnia evaporating is done. A 2D-motorized motion stage is applied for the handling and scanning of 430 mm430 mm size optics. Experimental results indicate that a damage threshold of 27 J/cm2 can be achieved after the conditioning procedure. The effect of this technique is well demonstrated.
- optical film,
- mid-size laser spot,
- laser damage,
- laser conditioning

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