Laser induced damage characteristics in fused silica surface irradiated by 1064 nm and 532 nm ns laser simultaneously

Ye Cheng; Qiu Rong; Jiang Yong; Gao Xiang; Guo Decheng; Zhou Qiang; Deng Chengfu

doi:10.11884/HPLPB201830.170387

Volume 30 Issue 4

Apr. 2018

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Ye Cheng, Qiu Rong, Jiang Yong, et al. Laser induced damage characteristics in fused silica surface irradiated by 1064 nm and 532 nm ns laser simultaneously[J]. High Power Laser and Particle Beams, 2018, 30: 041003. doi: 10.11884/HPLPB201830.170387

Citation:

Ye Cheng, Qiu Rong, Jiang Yong, et al. Laser induced damage characteristics in fused silica surface irradiated by 1064 nm and 532 nm ns laser simultaneously[J]. High Power Laser and Particle Beams, 2018, 30: 041003. doi: 10.11884/HPLPB201830.170387

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Laser induced damage characteristics in fused silica surface irradiated by 1064 nm and 532 nm ns laser simultaneously

doi: 10.11884/HPLPB201830.170387

Ye Cheng^{1, 2
,},
Qiu Rong^{1, 2
,
,},
Jiang Yong^{1, 2},
Gao Xiang^{1, 2},
Guo Decheng^{1, 2},
Zhou Qiang^{1, 2},
Deng Chengfu^{1, 2}

1.
Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology and Research Center of Laser Fusion, CAEP, Mianyang 621010, China
2.
School of Science, Southwest University of Science and Technology, Mianyang 621010, China

Received Date: 2017-09-28
Rev Recd Date: 2017-12-04
Publish Date: 2018-04-15

Abstract

Abstract

The wavelengths of 1064 nm and 532 nm of the pulsed Nd: YAG laser were used to irradiate the fused silica to study the interaction between different wavelengths of laser with fused silica. The laser induced damage characteristics in fused silica surface were researched under separate of simultaneous irradiation of 1064 nm and 532 nm wavelengths. Testing the damage probability under different energy density, we obtained the damage probability curves and typical damage morphologies. The results show that the initial damage threshold under simultaneous irradiation with 1064 nm and 532 nm is always less than that under single wavelength irradiation. Add a certain amount of 532 nm laser to 1064 nm laser, fused silica improves the absorption efficiency for 1064 nm. The damage density of fused silica increases under double wavelength simultaneous irradiation. The reason is that the surface defects of fused silica have different absorption mechanisms for different wavelengths.
- laser damage,
- fused silica,
- damage probability,
- damage threshold,
- dual wavelength

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References(12)

References

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