Presentation	2001/6/8 The onset of optical breakdown in si11ca glass under KrF radiation Yoshizo Kawaguchi,
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Abstract(in Japanese)	(See Japanese page)
Abstract(in English)	We have investigated the onset of optical breakdown in silica glass under irradiation of KrF excimer laser by luminescence spectroscopy, luminescence imaging, and SEM observation. When the laser fluence is increased just below the damage threshold, appearance and disappearance of localized luminescence are often observed under cumulative irradiation, and finally a bright luminescence due to optical breakdown occurs. The former is due to micro-plume, and the creation and relaxation of defects should cause the flashing of the luminescence, while the latter is due to bright plume. SEM images of the laser-damaged region shows pits of the order of 1 micron, suggesting that the local heating and vaporization of the particles on the surface layer cause the optical breakdown.
Keyword(in Japanese)	(See Japanese page)
Keyword(in English)	Silica glass / Optical breakdown / KrF laser
Paper #	LQE2001-18
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Conference Information
Committee	LQE
Conference Date	2001/6/8(1days)
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Paper Information
Registration To	Lasers and Quantum Electronics (LQE)
Language	JPN
Title (in Japanese)	(See Japanese page)
Sub Title (in Japanese)	(See Japanese page)
Title (in English)	The onset of optical breakdown in si11ca glass under KrF radiation
Sub Title (in English)
Keyword(1)	Silica glass
Keyword(2)	Optical breakdown
Keyword(3)	KrF laser
1st Author's Name	Yoshizo Kawaguchi
1st Author's Affiliation	Photoreaction Control Center National Institute of Advanced Industrial Science and Technology()
Date	2001/6/8
Paper #	LQE2001-18
Volume (vol)	vol.101
Number (no)	113
Page	pp.pp.-
#Pages	6
Date of Issue