Gray-track damage in KTiOPO4 crystals

Patricia A. Morris; August Ferretti; Mark G. Roelofs; John D. Bierlein; Thomas M. Baer

doi:10.1117/12.147398

24 June 1993 Gray-track damage in KTiOPO₄ crystals

Patricia A. Morris, August Ferretti, Mark G. Roelofs, John D. Bierlein, Thomas M. Baer

Proceedings Volume 1848, 24th Annual Boulder Damage Symposium Proceedings -- Laser-Induced Damage in Optical Materials: 1992; (1993) https://doi.org/10.1117/12.147398
Event: Optical Materials for High Power Lasers, 1992, Boulder, CO, United States

Abstract

A correlation is observed between the laser and electric-field damage susceptibilities of most KTiOPO₄ (KTP) crystals. The observed gray track damage susceptibilities are found to be correlated to the concentrations of defects in the crystals which can stabilize the Ti³⁺ damage defect sites in KTP. These stabilizing defects are those which can have an effective positive charge, such as oxygen vacancies, protons, and Ba and F impurities. The defects present in KTP crystals depend on the technique (hydrothermal or flux) used for growth. Post-growth processing techniques have been developed which reduce the laser gray track and electric-field damage susceptibilities of both hydrothermal and flux KTP.

Citation Download Citation

Patricia A. Morris, August Ferretti, Mark G. Roelofs, John D. Bierlein, and Thomas M. Baer "Gray-track damage in KTiOPO₄ crystals", Proc. SPIE 1848, 24th Annual Boulder Damage Symposium Proceedings -- Laser-Induced Damage in Optical Materials: 1992, (24 June 1993); https://doi.org/10.1117/12.147398

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