光学学报, 2009, 29 (9): 2491, 网络出版: 2009-10-09
具有退偏补偿及自选模功能的新型谐振腔
A Novel Resonator with the Functions of Thermal Induced Depolarization Compensation and Self-Selecting Mode
激光器 固体激光器 热应力双折射 退偏损耗 谐振腔设计 lasers solid-state laser thermal induced birefringence depolarization loss resonator design
摘要
在分析棒状激光介质热应力导致退偏损耗特性的基础上,建立了相应的数学模型,探讨了谐振腔内低阶模和高阶模退偏损耗的不同特性,提出一种具有退偏补偿和选模功能的新型谐振腔。该谐振腔结构在运行时存在三个子腔且因棒状激光介质的热应力导致退偏特性相互耦合,通过对这三个子腔偏振态补偿特性、谐振腔稳定性及选模特性进行深入分析,给出了此类谐振腔理想的设计方案,开展了相应的实验研究,并获得较好光束质量的激光输出。
Abstract
A novel resonator for compensating thermal induced birefringence and self-selecting mode is designed. Based on the depolarization characteristics analysis of Nd:YAG rod, the properties of compensating depolarization loss and self-selecting mode, and the stability of resonator are discussed. The technology uses a feedback mirror to compensate depolarization, which makes the resonator contain three sub-resonators with different abilities of mode selection. The resonator is applied to a diode-pumped Nd:YAG laser operating at acoustic optical (AO)-Q switch for acquiring high quality beam.
朱广志, 朱晓, 朱长虹, 齐丽君. 具有退偏补偿及自选模功能的新型谐振腔[J]. 光学学报, 2009, 29(9): 2491. Zhu Guangzhi, Zhu Xiao, Zhu Changhong, Qi Lijun. A Novel Resonator with the Functions of Thermal Induced Depolarization Compensation and Self-Selecting Mode[J]. Acta Optica Sinica, 2009, 29(9): 2491.