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Title: Comparative study on light-induced absorption between MgO:LiNbO{sub 3} and MgO:LiTaO{sub 3}

Abstract

A comparative study on the light-induced absorption was performed for lithium niobate and lithium tantalate crystals in which the antisite defects were eliminated by MgO doping. The induced absorption was measured in a spectral window ranging from visible to near infrared with a time resolution of 10 ns. Upon pulsed-light irradiation, a broad absorption peaking near 1250 nm was induced in MgO-doped lithium niobate. It was attributed to the small free polaron, an electron trapped at the regular Nb ion site. In contrast, such absorption in the near infrared originating from the free polaron was absent in MgO-doped lithium tantalates. The findings are highly relevant to the frequency conversion performances of high-power and pulsed lasers based on the current periodically-poled devices. The results also suggest guidelines for improving the crystal qualities.

Authors:
;  [1]
  1. Department of Applied Physics, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei Tokyo 184-8588 (Japan)
Publication Date:
OSTI Identifier:
22038702
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 110; Journal Issue: 6; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION; CRYSTALS; DOPED MATERIALS; ELECTRONS; INFRARED SPECTRA; IRRADIATION; LASER RADIATION; LITHIUM; LITHIUM COMPOUNDS; MAGNESIUM OXIDES; NIOBATES; NIOBIUM IONS; PERFORMANCE; POLARONS; RADIATION EFFECTS; TANTALATES; TIME RESOLUTION; TRAPPING; VISIBLE RADIATION

Citation Formats

Enomoto, Satoshi, and Ashihara, Satoshi. Comparative study on light-induced absorption between MgO:LiNbO{sub 3} and MgO:LiTaO{sub 3}. United States: N. p., 2011. Web. doi:10.1063/1.3642959.
Enomoto, Satoshi, & Ashihara, Satoshi. Comparative study on light-induced absorption between MgO:LiNbO{sub 3} and MgO:LiTaO{sub 3}. United States. doi:10.1063/1.3642959.
Enomoto, Satoshi, and Ashihara, Satoshi. Thu . "Comparative study on light-induced absorption between MgO:LiNbO{sub 3} and MgO:LiTaO{sub 3}". United States. doi:10.1063/1.3642959.
@article{osti_22038702,
title = {Comparative study on light-induced absorption between MgO:LiNbO{sub 3} and MgO:LiTaO{sub 3}},
author = {Enomoto, Satoshi and Ashihara, Satoshi},
abstractNote = {A comparative study on the light-induced absorption was performed for lithium niobate and lithium tantalate crystals in which the antisite defects were eliminated by MgO doping. The induced absorption was measured in a spectral window ranging from visible to near infrared with a time resolution of 10 ns. Upon pulsed-light irradiation, a broad absorption peaking near 1250 nm was induced in MgO-doped lithium niobate. It was attributed to the small free polaron, an electron trapped at the regular Nb ion site. In contrast, such absorption in the near infrared originating from the free polaron was absent in MgO-doped lithium tantalates. The findings are highly relevant to the frequency conversion performances of high-power and pulsed lasers based on the current periodically-poled devices. The results also suggest guidelines for improving the crystal qualities.},
doi = {10.1063/1.3642959},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 6,
volume = 110,
place = {United States},
year = {2011},
month = {9}
}