Evolution of bulk damage initiation in DKDP crystals

Christopher W. Carr; T. H. McMillian; Mike C Staggs; Harry B. Radousky; Stavros G. Demos

doi:10.1117/12.472409

30 May 2003 Evolution of bulk damage initiation in DKDP

Christopher W. Carr, T. H. McMillian, Mike C Staggs, Harry B. Radousky, Stavros G. Demos

Proceedings Volume 4932, Laser-Induced Damage in Optical Materials: 2002 and 7th International Workshop on Laser Beam and Optics Characterization; (2003) https://doi.org/10.1117/12.472409
Event: XXXIV Annual Symposium on Optical Materials for High Power Lasers: Boulder Damage Symposium, 2002, Boulder, CO, United States

Abstract

We investigate the evolution of laser-induced damage initiated in the bulk of DKDP crystals using in-situ microscopy. Experimental results indicate that at peek fluences greater than 10 J/cm², damage sites are formed with increasing number as a function of the laser fluence. Following plasma formation, cracks are observed which grow in size for tens of seconds after the termination of the laser pulse. Subsequent irradiation leads to modest increase in size only during the initial 2-5 pulses. Experimental results suggest that there is also relaxation of the stresses adjacent to a damage site for several hours after initial damage.

Citation Download Citation

Christopher W. Carr, T. H. McMillian, Mike C Staggs, Harry B. Radousky, and Stavros G. Demos "Evolution of bulk damage initiation in DKDP", Proc. SPIE 4932, Laser-Induced Damage in Optical Materials: 2002 and 7th International Workshop on Laser Beam and Optics Characterization, (30 May 2003); https://doi.org/10.1117/12.472409

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