BIBO晶体非临界相位匹配的研究  

Research of noncritical phase-matching of BIBO crystal

作　　者：韩永飞[1] 陈振强[1] 李景照[1] 林浪[1] 李真[1] 王国富[2] 

机构地区：[1]暨南大学光电工程研究所,广州510632 [2]中国科学院福建物质结构研究所,福州350002

出　　处：《激光技术》2009年第5期466-469,共4页Laser Technology

基　　金：广东省科技攻关项目资助项目(2003C103017)

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:T_m=22.3℃,=35°,d_(eff)=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。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 0.65 μm - 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.

关 键 词：非线性光学 非临界相位匹配 MATLAB计算 硼酸铋 

分 类 号：O734[理学—晶体学]