Laser-induced fluorescence of fused silica irradiated by KrF laser

Gao, Zhixing; Wang, Hui; Han, Lixuan; Tang, Xianqiang; Xiang, Zaikui

doi:10.1117/12.2186063

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2017

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“…Fused silica is one of the key-optical materials to be the lens or the windows among the laser device.Under the irradiation of the laser,the energy density caused by the irradiation instigating a shock wave along the radial and axial direction which lead to the structural modification in the fused silica.Usually the applicative structural modification exhibits the damage among the center or rear of the fused silica which cut down the output energy [1,2]. In recent years, the mechanismof the damage has attracted remarkable attention.…”

Section: Introductionmentioning

confidence: 99%

Laser Induced Damage in Fused Silica for 248 nm

Wang

Nie

et al. 2017

KEM

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For the key-optical material, the laser induced damage character of fused silica is crucial for the application among the optical laser fitting. As the defect of each point of the silica sample is diverse, and the lasers focus point by point, we divided the sample block into three-dimensional structure for each laser-point to discuss the relationship between the LIDT of each points and the OH-content. The result shows that the LIDT of the center of the sample block is up to 10-11J/cm2 which is consistent after the treatment while the LIDT of border pieces is 9-10 J/cm2. The different temperature and the aggradation during the fusing process and the machine process caused the different OH content of different location of the sample.

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Section: Introductionmentioning

confidence: 99%