Growth of damage sites due to platinum inclusions in Nd-doped laser glass irradiated by the beam of a large-scale Nd:glass laser

Gerard Raze; Marc Loiseau; Daniel Taroux; Michel A. Josse; Herve Bercegol

doi:10.1117/12.472433

30 May 2003 Growth of damage sites due to platinum inclusions in Nd-doped laser glass irradiated by the beam of a large-scale Nd:glass laser

Gerard Raze, Marc Loiseau, Daniel Taroux, Michel A. Josse, Herve Bercegol

Author Affiliations +

Proceedings Volume 4932, Laser-Induced Damage in Optical Materials: 2002 and 7th International Workshop on Laser Beam and Optics Characterization; (2003) https://doi.org/10.1117/12.472433
Event: XXXIV Annual Symposium on Optical Materials for High Power Lasers: Boulder Damage Symposium, 2002, Boulder, CO, United States

Abstract

Samples of Neodymium doped laser glass were irradiated by the 1ω beam of a Nd:glass laser that delivers up to 80 J during a 3-ns pulse duration. Prior to this experiment, platinum inclusions were revealed by a systematic scanning with a lab-scale Nd:Yag laser. The damage sites due to impurity inclusions were subjected to tens of shots of the centimeter-size beam. Several inclusions were irradiated by a series of shots, at a fixed fluence comprised between 10 and 20 J/cm². The incidence on the optical component was taken at Brewster-angle. In each case, the damage zone began to grow, then the growth rate slowed down and finally stopped. Thus, a stabilization of the growth was obtained for this bulk damage as opposed to steady growth observed in the case of silica surfaces.

Citation Download Citation

Gerard Raze, Marc Loiseau, Daniel Taroux, Michel A. Josse, and Herve Bercegol "Growth of damage sites due to platinum inclusions in Nd-doped laser glass irradiated by the beam of a large-scale Nd:glass laser", 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/10.1117/12.472433

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