Laser-Induced Damage in Optical Materials
Final rept. 15 Jun 1972-15 Dec 1973
HUGHES RESEARCH LABS MALIBU CA
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The report contains the results of damage experiments performed at 0. 694 and 1.06 micrometer using well-controlled Q-switched ruby and NdYAG lasers. Materials studied at 1.06 micrometer are proustite Ag3AsS3 and lithium niobate LiNbO3. Surface damage thresholds were measured for proustite for different conditions of pulse repetition rate and pulse duration. A discussion of the theories of optical avalanche breakdown is presented in which doubts are raised as to whether intrinsic breakdown has ever been observed. Arguments are presented that support the likelihood that ionic impurities play a crucial role in optical breakdown.
- Lasers and Masers