Abstract

We reported the first observation of room-temperature persistent spectral hole burning in Sm²⁺-doped fluoride glass in the last conference [1]. Room-temperature hole burning had been also observed in Sm²⁺-doped crystals [2]. We found considerable differences in the hole-burning characteristics between Sm²⁺-doped glasses and Sm²⁺-doped crystals: The burning-laser-intensity dependence is approximately linear, and no antihole is observed around the hole burned in Sm²⁺-doped glasses [3]. More detailed experimental studies are needed to clarify the mechanism of the hole burning in this glass and to explore more efficient hole-burning systems. In this paper, we report several experimental results related to wavelength dependence of the hole burning process.

© 1994 Optical Society of America