CO2 laser damage trials on chemical vapor deposited diamond

Charles S. James Pickles; Steven E. Coe; T. D. Madgwick; Ricardo S. Sussmann; Christopher J. H. Wort; Keith L. Lewis

doi:10.1117/12.379323

3 March 2000 CO₂ laser damage trials on chemical vapor deposited diamond

Charles S. James Pickles, Steven E. Coe, T. D. Madgwick, Ricardo S. Sussmann, Christopher J. H. Wort, Keith L. Lewis

Author Affiliations +

Proceedings Volume 3902, Laser-Induced Damage in Optical Materials: 1999; (2000) https://doi.org/10.1117/12.379323
Event: Laser-Induced Damage in Optical Materials: 1999, 1999, Boulder, CO, United States

Abstract

The resistance of Chemical Vapor Deposited (CVD) diamond samples to high power, continuous wave CO₂ lasers has been investigated. It was found that the major possibility of failure was through thermal hoop stresses at the disc edge and these formed as a result of a thermal runaway effect in the samples. CVD diamond's uniquely high thermal conductivity means that the thermal runaway can be prevented in almost all practical applications by effective cooling of the disc edge. If this is done, the laser damage threshold becomes so high that it is difficult to accurately quantify using standard laser systems. Other parameters which determine CVD diamond's performance in IR window applications, such as: modulation transfer function, samples flatness and absorption, have also been studied.

Citation Download Citation

Charles S. James Pickles, Steven E. Coe, T. D. Madgwick, Ricardo S. Sussmann, Christopher J. H. Wort, and Keith L. Lewis "CO₂ laser damage trials on chemical vapor deposited diamond", Proc. SPIE 3902, Laser-Induced Damage in Optical Materials: 1999, (3 March 2000); https://doi.org/10.1117/12.379323

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