Cavity nonlinear optics enables intriguing physical phenomena to occur at micro- or nano-scales with modest input powers. While this enhances capabilities in applications such as comb generation, frequency conversion, and quantum optics, undesired nonlinear effects including photorefraction and thermal bistability are exacerbated. In this Letter, we propose and demonstrate a highly effective method of achieving cavity stabilization using an auxiliary laser for controlling photorefraction in a z-cut periodically poled lithium niobate (LN) microcavity system. Our numerical study accurately models the photorefractive effect under high input powers, guiding future analyses and development of LN microcavity systems.

中文翻译：

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使用辅助激光器稳定地调节光折变微腔

腔非线性光学器件能够以适度的输入功率在微米或纳米级上产生有趣的物理现象。虽然这增强了诸如梳状生成，频率转换和量子光学等应用程序的功能，但不希望的非线性效应（包括光折射和热双稳态）加剧了。在这封信中，我们提出并演示了一种高效的方法，该方法使用辅助激光器来控制Z形切割周期性极化铌酸锂（LN）微腔系统中的光折射，从而实现腔稳定。我们的数值研究准确地模拟了高输入功率下的光折变效应，指导了LN微腔系统的未来分析和开发。