1. 06. mu. m 150 psec laser damage study of diamond turned, diamond turned/polished and polished metal mirrors
A well characterized 1.06 ..mu..m 150 psec glass laser pulse was used to study the damage characteristics for diamond turned, diamond turned/polished, and polished copper and silver mirrors less than 5 cm diameter. Although most samples were tested with a normal angle of incidence, some were tested at 45/sup 0/ with different linear polarization showing an increase in damage threshold for S polarization. Different damage mechanisms observed are discussed. Laser damage is related to residual surface influences of the fabrication process. First attempts to polish diamond turned surfaces resulted in a significant decrease in laser damage threshold. The importance of including the heat of fusion in the one dimensional heat analysis of the theoretical damage threshold and how close the samples came to the theoretical damage threshold are discussed.
- Research Organization:
- Lawrence Livermore Lab., CA
- OSTI ID:
- 7285704
- Journal Information:
- Natl. Bur. Stand. (U.S.), Spec. Publ.; (United States), Journal Name: Natl. Bur. Stand. (U.S.), Spec. Publ.; (United States) Vol. 435; ISSN XNBSA
- Country of Publication:
- United States
- Language:
- English
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