Temperature dependence of light-induced absorption in reduced Co:KNSBN crystal with multiple-shallow traps

Yanqiu Li; Dangquoc Trung; Baoping Zhang; Yusaburo Segawa; Tadashi Itoh

doi:10.1117/12.318135

17 August 1998 Temperature dependence of light-induced absorption in reduced Co:KNSBN crystal with multiple-shallow traps

Yanqiu Li, Dangquoc Trung, Baoping Zhang, Yusaburo Segawa, Tadashi Itoh

Author Affiliations +

Proceedings Volume 3554, Photorefractive Materials: Phenomena and Related Applications II; (1998) https://doi.org/10.1117/12.318135
Event: Photonics China '98, 1998, Beijing, China

Abstract

We studied the dependence of light-induced absorption on temperature in reduced Co:KNSBN crystal. The changes of light-induced absorption decrease as temperature decrease at high pump intensity, which can not be explained by previous two centers model. The dynamic behaviors of light-induced absorption reveal that there are multiple shallow levels in crystals. The thermal exciting rate and active energy of shallow levels are determined by the dependence of dynamics of light-induced absorption on pump intensity and temperature, respectively. The deep levels of reduced Co:KNSBN can be shown in transmission spectra of crystal. A model assuming both electron and hole with three shallow traps is used to explain our experimental results.

Citation Download Citation

Yanqiu Li, Dangquoc Trung, Baoping Zhang, Yusaburo Segawa, and Tadashi Itoh "Temperature dependence of light-induced absorption in reduced Co:KNSBN crystal with multiple-shallow traps", Proc. SPIE 3554, Photorefractive Materials: Phenomena and Related Applications II, (17 August 1998); https://doi.org/10.1117/12.318135

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