A model of laser-induced damage of KDP based on the coupling of statistics and heat transfer

Guillaume Duchateau; Anthony Dyan

doi:10.1117/12.752614

18 December 2007 A model of laser-induced damage of KDP based on the coupling of statistics and heat transfer

Guillaume Duchateau, Anthony Dyan

Proceedings Volume 6720, Laser-Induced Damage in Optical Materials: 2007; 672006 (2007) https://doi.org/10.1117/12.752614
Event: Boulder Damage Symposium XXXIX: Annual Symposium on Optical Materials for High Power Lasers, 2007, Boulder, Colorado, United States

Abstract

By coupling statistics and heat transfer, we investigate numerically laser-induced KDP crystal damage by multi-gigawatt nanosecond pulses. Our model is based on the heating of nanometric absorbing defects that may cooperate when they are sufficiently aggregated. In such a case, they induce locally a strong increase of temperature that may lead to a subsequent damage. Statistics is used to evaluate the initial defect cluster size distribution. When the crystal is illuminated, by considering in addition heat transfer processes, this approach allows to predict damage probabilities and the evolution of the damaged sites density as a function of the laser fluence. We show that the scaling law exponent, linking the critical laser fluence to its pulse duration, takes a value close to 0.3 departing from the standard 0.5 value that is in a good agreement with recents experiments. Furthermore, these results indicate that absorbers involved in KDP damage may be associated with a collection of planar defects.

Citation Download Citation

Guillaume Duchateau and Anthony Dyan "A model of laser-induced damage of KDP based on the coupling of statistics and heat transfer", Proc. SPIE 6720, Laser-Induced Damage in Optical Materials: 2007, 672006 (18 December 2007); https://doi.org/10.1117/12.752614

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available