High-frequency Bragg gratings in a photothermorefractive glass.
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 approximately 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 degrees C.
Efimov
O M
OM
School of Optics/Center for Research and Education in Optics and Lasers, University of Central Florida, P.O. Box 162700, Orlando, Florida 32816-2700, USA.
Glebov
L B
LB
Smirnov
V I
VI