Multiple ultrashort-pulse damage of AR-coated beta-barium borate

Paul Allenspacher; Ralf Baehnisch; Wolfgang Riede

doi:10.1117/12.524383

10 June 2004 Multiple ultrashort pulse damage of AR-coated beta-barium borate

Paul Allenspacher, Ralf Baehnisch, Wolfgang Riede

Proceedings Volume 5273, Laser-Induced Damage in Optical Materials: 2003; (2004) https://doi.org/10.1117/12.524383
Event: XXXV Annual Symposium on Optical Materials for High Power Lasers: Boulder Damage Symposium, 2003, Boulder, Colorado, United States

Abstract

An investigation of ultra short pulse damage threshold of AR coated beta-barium borate (BBO) used for SHG or as Q-switching material has been carried out. As a laser source, a CPA Ti:Sapphire laser system operating at a wavelength of 775 nm tuned to various pulse durations (150 fs, 1 ps, 3 ps) has been used. The online damage detection system is based on a scatter probe unit. It is capable of counting the number of pulses prior to damage and logging of the damage level, and allows for the interruption of irradiation immediately after damage. For S-on-1 irradiation and pulse numbers of up to 10⁴ per site, LIDTs of 0.3, 0.8 and 1.9 J/cm² were detected for the given pulse durations. Characteristic damage curves were measured according to the ISO standard 11254 2.0. Coating delamination was observed as the damage morphology.

Citation Download Citation

Paul Allenspacher, Ralf Baehnisch, and Wolfgang Riede "Multiple ultrashort pulse damage of AR-coated beta-barium borate", Proc. SPIE 5273, Laser-Induced Damage in Optical Materials: 2003, (10 June 2004); https://doi.org/10.1117/12.524383

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