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Effects of Vacuum on Fused Silica UV Damage |
XU Shi-Zhen1,2;LV Hai-Bing2;YUAN Xiao-Dong2;HUANG Jin2;JIANG Xiao-Dong2;WANG Hai-Jun2;ZU Xiao-Tao1;ZHENG Wan-Guo2 |
1Department of Applied Physics, University of Electronic Science and Technology of China, Chengdu 6100542Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900 |
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Cite this article: |
XU Shi-Zhen, LV Hai-Bing, YUAN Xiao-Dong et al 2008 Chin. Phys. Lett. 25 223-226 |
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Abstract Damage points induced by 355nm laser irradiation increase more quickly on the surface of fused silica in vacuum of about 10-3Pa than in atmospheric air at the same fluence. The larger concentration of point defects in vacuum is confirmed by photoluminescence intensity. X-ray photoelectron spectroscopy and infrared absorption indicate the formation of sub-stoichiometric silica on the surface. The degradation mechanism of fused silica in vacuum is discussed.
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Keywords:
61.80.Ba
42.70.Ce
61.72.Ji
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Received: 11 October 2007
Published: 27 December 2007
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PACS: |
61.80.Ba
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(Ultraviolet, visible, and infrared radiation effects (including laser radiation))
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42.70.Ce
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(Glasses, quartz)
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61.72.Ji
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