双轴晶体和频产生589nm钠黄光的相位匹配特性

Phase-matching characteristics of 589nm radiation generated by SFG with double-axis crystals

摘要: 讨论了利用双轴晶体KTP与LBO对1064nm与1319nm激光进行和频产生589nm钠黄光的和频相位匹配特性。推导得出对于和频情况下的非线性极化张量的表达式,并应用于倍频情况进行了验证。进行了和频相位匹配的理论分析,给出了这两种晶体在和频时的最佳相位匹配角和有效和频系数。

Abstract: 589nm radiation generated by the sum frequency generation(SFG) with double-axis crystals KTP and LBO from lasers of 1064nm and 1319nm is analyzed.Nonlinear susceptibility tensor for the sum frequency generation is derived and validated in the second harmonic generation.Phase-matching for SFG is calculated and the optimal phase-matching angle and effective sum frequency coefficient are given.