激光技术, 2009, 33 (5): 466, 网络出版: 2010-03-11
BIBO晶体非临界相位匹配的研究
Research of noncritical phase-matching of BIBO crystal
非线性光学 非临界相位匹配 MATLAB计算 硼酸铋 nonlinear optical noncritical phase-matched MATLAB calculation bismuth borate
摘要
为了研究BIBO晶体的非临界相位匹配的特点及应用,采用MATLAB编程的精确计算方法,在BIBO的热光色散方程的基础上,以波长为532nm的绿光作为抽运光,计算了BIBO在非临界相位匹配下的温度调谐、有效非线性系数和允许参量。计算得出,当匹配角θ=90°时,信号光的温度调谐范围为0.65μm~3.0μm;当信号光波长为670nm时,BIBO的差频Ⅱ类(B)相位匹配的最佳匹配条件为:Tm=22.3℃,φ=35°,deff=1.904pm/V。结果表明,BIBO的非临界相位匹配有望应用于激光电视等可见波段激光产品。
Abstract
In order to obtain the noncritical phase-matched property of BiB3O6(BIBO) crystal and improve its application,based on its thermo-optical dispersion formula,with the green light at 532nm as the pump light,the temperature tuning range,efficient nonlinear coefficient and acceptance parameter of BIBO in noncritical phase-matching are calculated accurately by means of MATLAB programs.When the matched angle θ=90°,the signal light can tunes within 0.65μm~3.0μm.When the signal light is at 670nm,the optimal phase-matched condition of difference frequency type Ⅱ(B) phase-matching is obtained:Tm=22.3℃,φ=35°,deff=1.904pm/V.The result is promising to be applied in the laser product in visible waveband,such as laser TV.
韩永飞, 陈振强, 李景照, 林浪, 李真, 王国富. BIBO晶体非临界相位匹配的研究[J]. 激光技术, 2009, 33(5): 466. HAN Yong-fei, CHEN Zhen-qiang, LI Jing-zhao, LIN Lang, LI Zhen, WANG Guo-fu. Research of noncritical phase-matching of BIBO crystal[J]. Laser Technology, 2009, 33(5): 466.
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