摘要
可调谐单频光参变振荡器是一种非常理想的相干激光光源,具有调谐范围宽、相干性好、效率高和性能稳定可靠的优点,广泛应用于激光干涉计量、差分吸收雷达、光谱分析、光电对抗和生物医疗等各个领域。但是基于准相位匹配的普通光学参变振荡器由于宽的光参量增益和高功率抽运往往是多纵模运转,需要采用多种选频方法[种子注入、光栅及法布里珀罗(FP)标准具]或者利用光学参变振荡器自身的运转特性(抽运阈值比、热自锁效应及热致光波导效应)来实现单频运转。详细分析了实现可调谐单频光学参变振荡器的各种技术和实验装置。
A tunable single-frequency optical parametric oscillator （OPO） based on quasi-phase-matching is an ideal coherent light source with, high efficiency, good coherence, wide tunable spectral range and reliable and stable performance. It is widely used in laser interference measurement, laser differential absorption radar, spectral analysis, optoelectronic countermeasure, laser medicine etc. Due to the wide optical parametric gain and high power pump, most OPOs are often operated in multiple longitudinal modes, and a variety of methods are needed to achieve single-frequency operation. These methods include frequency selection method （such as injection-seed, grating and Fabry-Pérot etalon） and the operation characteristics of the OPO system itself （pump threshold ratio, thermal self-locking effect and thermal waveguide effect）. This paper analyzes the realization of tunable single-frequency OPO.
出处
《激光与光电子学进展》
CSCD
北大核心
2013年第6期30-35,共6页
Laser & Optoelectronics Progress
基金
福建省教育厅A类科技项目(JA12248)
福建省自然科学基金(2011J05161)资助课题
关键词
激光器
单频光参变振荡器
可调谐激光
热自锁效应
热致光波导效应
lasers
single-frequency optical parametric oscillator
tunable laser
thermal self-locking effect
thermal waveguide effect
