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Room-temperature grating-based morphological hole burning in Sm2+-doped glass powders
Koji Fujita1, Yoshihiro Ohashi, Kazuyuki Hirao
1Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan. koji@collon1.kuic.kyoto-u.ac.jp
Abstract:
We have observed grating-based morphological hole burning in Sm2+-doped glass powders at room temperature. When photobleaching on the 4f(6)-4f(5)5d transition of Sm2+ is combined with multiple light scattering, holes are produced in frequency and wave-vector domains. The hole profile depends on the amount of light absorption of Sm2+; it sharpens as the absorption decreases. The variation of the hole shape is explained theoretically based on a diffusion approximation.
