Holographic UV mirrors were recorded in a volume of photothermorefractive glass. This photosensitive silicate glass doped with silver, cerium, and fluorine is transparent in the near-UV, visible, and near-IR spectral regions, and its induced refractive-index change reaches 10-3. UV radiation of a He–Cd laser at 325 nm was used for Bragg grating recording with a spatial frequency of ∼9200 mm-1. The absolute diffraction efficiency of the recorded mirror reached 12.6% at 325 nm and did not deteriorate under the long-time effects of optical irradiation and heating up 400°C.
© 2000 Optical Society of America
(090.7330) Holography : Volume gratings
O. M. Efimov, L. B. Glebov, and V. I. Smirnov, "High-frequency Bragg gratings in a photothermorefractive glass," Opt. Lett. 25, 1693-1695 (2000)