Premium
Double‐frequency properties of In:LiNbO 3 crystals
Author(s) -
Wang Rui,
Wang Biao,
Liu Yulan,
Shi Liangsheng
Publication year - 2005
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.200410408
Subject(s) - crystal (programming language) , lithium niobate , second harmonic generation , doping , materials science , analytical chemistry (journal) , czochralski method , impurity , chemistry , optics , optoelectronics , laser , physics , organic chemistry , chromatography , computer science , programming language
1 mol%, 2 mol%, 3 mol%, 4 mol% and 5 mol% In 3+ doped LiNbO 3 crystals were grown by the Czochralski method, respectively. Oxidized treatment of some crystals was carried out. The infrared transmission spectra and photo‐damage resistance of the samples were measured. The results showed that the OH ‐ absorption peaks of In(3mol%):LiNbO 3 , In(4mol%):LiNbO 3 and In(5mol%):LiNbO 3 crystals were located at about 3508 cm ‐1 , while those of In(1mol%):LiNbO 3 and In(2mol%):LiNbO 3 crystals were located at about 3484cm ‐1 . When the doped In 3+ concentration reached its threshold in LiNbO 3 crystal, photo‐damage resistance of In:LiNbO 3 crystals was two orders of magnitude higher than that of pure LiNbO 3 crystal. The experimental results of the second harmonic generation (SHG) showed that the phase matching temperatures of In:LiNbO 3 crystals were lower than those of Zn:LiNbO 3 and Mg:LiNbO 3 crystals and the SHG efficiency reached 38%. Oxidization treatment was also found to make the dark trace resistance of crystals increase. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)