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Optics and Spectroscopy

Stochastic theory of nonsteady-state hole burning in low-temperature doped crystals

A. P. Nizovtsov, N. S. Onishchenko

Published May 1, 1993• 1 citation
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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.

Spectral Hole-Burning and Related Spectroscopies: Science and Applications•Jan 1, 1994•0 citations
Recent experiments on time-resolved hole-burning (TRHB) [1-3] and nonexponential photon-echo decays [4,5] in low-temperature ion-doped crystals have demonstrated the multi-timescale dynamics of host nuclei whose spin flips provide the main source of stochastic fluctuations Ut of an impurity ion transition frequency ωab(ωabt=ωab+Ut) leading to optical dephasing and spectral diffusion. Such complicated spin dynamics results from the existence around the impurity ion of the "frozen core" of nuclear spins with their flip rates to be greatly slowed compared to the unperturbed bulk spins.
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.