具有腔内光放大的单共振光参量振荡器

推导了描述稳态运行，具有腔内光放大的环形腔单共振光参量振荡器(ICOASRO)的功率特性的高斯光束理论.在这种结构的单共振光参量振荡器(SRO)中，适当地选择光放大器的参数，可以很大程度地降低单共振光参量振荡器的抽运阈值.在平均场近似下无二阶非线性交叉耦合作用的具有腔内光放大的环形腔单共振光参量振荡器的工作范围分成四个工作区域，且存在最小的单共振光参量振荡器的抽运阈值.文中的分析考虑了作为光放大器的激光增益介质的端面抽运特性，考虑了一般化单共振光参量振荡器的特性. 关键词： 单共振光参量振荡器 光放大 阈值

Singly resonant optical parametric oscillator with intracavity optical amplification

The Gaussian beam theory has been developed to describe the power characteristics of the steady-state operating ring cavity singly resonant optical parametric oscillator (SRO) with intracavity optical amplification (ICOASRO). The threshold of SRO can be greatly lowered with suitable parameters of the optical amplifier. Under the mean-field approximation, there are four operating domains for a ICOASRO without the second-order nonlinear coupling, meanwhile there exits a minimum pump threshold for the SRO. The characteristics of the end-pumped laser gain medium used as optical amplifier is considered. The generalized characteristics of SRO are also considered in the derivation.