DEPENDENCE OF SECOND-HARMONIC PHASE-MATCHING TEMPERATURE IN LINBO3 CRYSTALS ON MELT COMPOSITION

被引：118
作者：
FAY, H
ALFORD, WJ
DESS, HM
机构：
[1] Union Carbide Corporation, Electronics Division, Speedway Laboratories, Indianapolis
来源：
APPLIED PHYSICS LETTERS | 1968年 / 12卷 / 03期
关键词：
D O I：
10.1063/1.1651911
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The second-harmonic, phase-matching temperature of ''stoichiometric'' LiNbO3 crystals, for fundamental radiation at 1.06 , has been found to vary by as much as 75°C from crystal to crystal and 10°C within an individual crystal. Measurements on crystals grown in a controlled manner from nonstoichiometric melts have shown that the phase-matching temperature, T, is an approximately linear function of melt composition, x, obeying the equation T = 50.5 + 32 × 102 (x - 0.50). Crystals with phase-matching temperatures of as high as 186°C have been grown from melts containing excess lithia. Such a crystal has been operated as a second harmonic generator without damage, whereas a comparable radiation produced by a crystal with a low phase-matching temperature damaged the crystal. A mechanism involving lithium ion vacancies is proposed to explain the results. © 1968 The American Institute of Physics.
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页码：89 / +
页数：1
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