Laser damage resistant pits in dielectric coatings created by femtosecond laser machining

Justin Wolfe; Roger Qiu; Christopher Stolz; Michael Thomas; Carolyn Martinez; Arzu Ozkan

doi:10.1117/12.836906

31 December 2009 Laser damage resistant pits in dielectric coatings created by femtosecond laser machining

Justin Wolfe, Roger Qiu, Christopher Stolz, Michael Thomas, Carolyn Martinez, Arzu Ozkan

Proceedings Volume 7504, Laser-Induced Damage in Optical Materials: 2009; 750405 (2009) https://doi.org/10.1117/12.836906
Event: Laser Damage Symposium XLI: Annual Symposium on Optical Materials for High Power Lasers, 2009, Boulder, Colorado, United States

Abstract

Replacing growing damage sites with benign, laser damage resistant features in multilayer dielectric films may enable large mirrors to be operated at significantly higher fluences. Laser damage resistant features have been created in high reflecting coatings on glass substrates using femtosecond laser machining. These prototype features have been damage tested to over 40 J/cm² (1064nm, 3ns pulselength) and have been shown not to damage upon repeated irradiation at 40J/cm². Further work to optimize feature shape and laser machining parameters is ongoing.

Citation Download Citation

Justin Wolfe, Roger Qiu, Christopher Stolz, Michael Thomas, Carolyn Martinez, and Arzu Ozkan "Laser damage resistant pits in dielectric coatings created by femtosecond laser machining", Proc. SPIE 7504, Laser-Induced Damage in Optical Materials: 2009, 750405 (31 December 2009); https://doi.org/10.1117/12.836906

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