掺杂铌酸锂双相位共轭镜光学谐振腔的温度特性

Temperature dependence of a resonator with two doped-LiNbO_3 phase-conjugate mirrors

用带导模型和耦合波方程在强泵浦条件下建立了能反映温度特性的光折变双相位共轭镜光学谐振腔的稳态强度公式，研究了这种光腔的温度特性。相位共轭镜的温度相对于输出光功率来说存在着一个最佳值，在此温度值下输出光功率最大。不同温度下两个相位共轭镜的最佳泵浦比不同。用Ｃｅ：ＬｉＮｂＯ３单晶和Ｈｅ－Ｎｅ激光构成了光折变双相位共轭镜光学谐振腔。测得的实验值与理论值基本吻合。

The temperature-dependent intensity formulas about the optical resonator with twophase-conjugate-mirrors (PCM) are bult up by using a band transport model and the coupling wave equa tion under the strong pumping condition in steady state. For PCM, there is a optimum temperature value and the resonator has the maximum output light power when the temperature is equal to the value.There are different optimum Pump ratio for PCMs under different temperature. In the experimental system, the optical ramator contains two PCMs made with Ce: LiNbO3 single crystal and a He-Ne laser.The experimental results are in agreement to theoretical analysis.