This paper presents the experimental results of a study of how temperature affects the luminescence of molecular clusters of silver in photothermorefractive glasses. It is shown that, after the glasses are UV-irradiated in the absorption band of cerium ions, intense and broad-band luminescence appears in the visible region. The luminescence centers responsible for this luminescence are neutral silver atoms and neutral molecular clusters of silver. Heat treatment at 350°C causes a tenfold increase of the luminescence intensity. The luminescence intensity decreases by a factor of 10 as the sample’s temperature is increased from 25°C to 200°C. The temperature dependence of the normalized luminescence intensity is shown for a fiber with silver introduced by ion exchange.
© 2013 Optical Society of America
(060.2270) Fiber optics and optical communications : Fiber characterization
(060.2290) Fiber optics and optical communications : Fiber materials
(060.2300) Fiber optics and optical communications : Fiber measurements
Original Manuscript: March 11, 2013
Published: October 15, 2013
D. S. Agafonova, V. I. Egorov, A. I. Ignat’ev, and A. I. Sidorov, "The effect of temperature on the luminescence of molecular clusters of silver in photothermorefractive glasses," J. Opt. Technol. 80, 506-509 (2013)