发明申请
US20090203511A1 SYNTHETIC SILICA GLASS OPTICAL MATERIAL HAVING HIGH RESISTANCE TO LASER INDUCED DAMAGE 审中-公开
合成二氧化硅玻璃光学材料具有高电抗激光诱发的损伤

SYNTHETIC SILICA GLASS OPTICAL MATERIAL HAVING HIGH RESISTANCE TO LASER INDUCED DAMAGE
摘要:
Disclosed is a synthetic silica glass optical material having high resistance to optical damage by ultraviolet radiation in the ultraviolet wavelength range, particularly in the wavelength less than about 250 nm and particularly, exhibiting a low laser induced wavefront distortion; specifically a laser induced wavefront distortion, measured at 633 nm, of between about −1.0 and 1.0 nm/cm when subjected to 10 billion pulses of a laser operating at approximately 193 nm and at a fluence of approximately 70 μJ/cm2. The synthetic silica glass optical material of the present invention comprises OH concentration levels of less than about 600 ppm, preferably less than 200 ppm, and H2 concentration levels less than about 5.0×1017 molecules/cm3′ and preferably less than about 2.0×1017 molecules/cm3.
信息查询
0/0