Optical multilayer materials HfO2 and SiO2 exhibit subpicosecond laser damage thresholds of just 10% of their intrinsic value when tested in vacuum. A few Torr of water vapor is shown to remedy this effect.
© 2011 OSA
D. N. Nguyen, L. Emmert, W. Rudolph, D. Patel, and C. Menoni, "The reduction of laser damage resistance of optical coatings to subpicosecond pulse trains under vacuum," in CLEO:2011 - Laser Applications to Photonic Applications, OSA Technical Digest (CD) (Optical Society of America, 2011), paper CTuE3.
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