Combination transitions due to stretching and librations of OH^− ions in LiNbO_3
作者： László Kovács , Krisztián Lengyel , Viktor Szalay
DOI: 10.1364/OL.36.003714
关键词: Fundamental frequency 、 Electric field 、 Absorption band 、 Stoichiometry 、 Lithium niobate 、 Materials science 、 Optics 、 Ion 、 Infrared 、 Absorption spectroscopy
摘要: A new absorption band has been detected at 4009 cm−1 in stoichiometric LiNbO3 single crystals. Based on present and earlier experiments recent calculations, this assigned as a combination transition involving the OH stretching an librational mode. The mode participating is of lower fundamental frequency than that contributing to 4415 cm1 observed by Grone Kapphan [J. Phys. Condens. Matter7, 3051 (1995)JCOMEL0953-898410.1088/0953-8984/7/15/012].
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