SEDL / STP / STP1028-EB / STP18537S

Laser-Induced Damage to Titanium-Doped Sapphire Using 532 nm Wavelength Pulses of 10 ns Duration

Seitel, SC
Montana Laser Optics, Inc., Bozeman, Montana

DeShazer, LG
Montana Laser Optics, Inc., Bozeman, Montana

Pages: 5    Published: Jan 1988

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Abstract

Preliminary laser exposure tests of uncoated, polished titanium-doped sapphire from Union Carbide Corporation are reported. The measured surface damage thresholds varied from ∼3 to ∼14 J/cm², depending on surface finish and sample orientation. The dependence on orientation is not correlated with crystallographic direction. A strong dependence on doping level was not observed. Well polished samples failed by pitting of the surface. On one sample, internal damage was also observed at fluences as low as 7 J/cm².