The laser damage behavior of high quality coatings under nanosecond pulse illumination is controlled by statistically distributed defects, whose physical nature and defect mechanisms are still largely unknown. Defect densities are often retrieved by modeling the fluence dependence of the damage probability measured by traditional damage test (TDT) methods, based on âdamage' or âño damage' observations. STEREO-LID (Spatioorally REsolved Optical LaserInduced Damage) allows the determination of the damage fluence (and intensity) in a single test by identifying the initiation of damage both temporally and spatially. The advantages of this test method over the TDT are discussed. In particular, its ability to retrieve detailed defect distribution functions is demonstrated by comparison of results from HfO2 films prepared by ion-assisted electron beam evaporation, ion-beam sputtering, and atomic layer deposition.
|Original language||English (US)|
|Title of host publication||47th Annual Laser Damage Symposium Proceedings - Laser-Induced Damage in Optical Materials|
|Subtitle of host publication||2015|
|Editors||M.J. Soileau, Vitaly E. Gruzdev, Joseph A. Menapace, Detlev Ristau, Gregory J. Exarhos|
|State||Published - 2015|
|Event||47th Annual Laser Damage Symposium - Laser-Induced Damage in Optical Materials: 2015 - Boulder, United States|
Duration: Sep 27 2015 → Sep 30 2015
|Name||Proceedings of SPIE - The International Society for Optical Engineering|
|Other||47th Annual Laser Damage Symposium - Laser-Induced Damage in Optical Materials: 2015|
|Period||9/27/15 → 9/30/15|
Bibliographical noteFunding Information:
The authors acknowledge funding from ARO/JTO grant number W911NF-11-1-0007, the University of New Mexico, College of Arts and Sciences. Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U.S. Department of Energy's National Nuclear Security Administration under contract DE-AC04-94AL85000.
The authors acknowledge funding from ARO/JTO grant number W911NF-11-1-0007, the University of New Mexico, College of Arts and Sciences.
- Laser-induced damage threshold
- defect distribution
- optical coatings