Design, optimization, and characterization of a narrow-bandwidth optical parametric oscillator
Design, optimization, and characterization of a narrow-bandwidth optical parametric oscillator
复制标题
窄带光参量振荡器的设计、优化和表征
DOI：
10.1364/josab.16.000090
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发表时间：
1999
影响因子：
1.9
通讯作者：
J. Greve
中科院分区：
文献类型：
--
作者：
T. W. Tukker;C. Otto;J. Greve
介绍了一种窄带宽高重复频率单谐振皮秒光参量振荡器的设计、优化和性能。该振荡器基于非临界相位匹配三硼酸锂晶体，由锁模Nd：YLF激光器的二次谐波同步泵浦。信号输出的光谱带宽用腔内双折射滤波器减小到0.06nm。此外，该滤波器允许在相位匹配带宽内快速扫描输出波长。当抽运功率为4 W时，光参量振荡器的最大平均信号输出为1.6 W，脉冲宽度为22 ps。利用本发明的反射镜设置，信号和空闲波长分别从740至930 nm和1220至1830 nm可调谐。总的外部功率转换效率优于55%。
The design, optimization, and performance of a narrow-bandwidth high-repetition-rate singly resonant picosecond optical parametric oscillator, based on a noncritical phase-matched lithium triborate crystal and synchronously pumped by the second harmonic of a mode-locked Nd:YLF laser, is described. The spectral bandwidth of the signal output is reduced with an intracavity birefringent filter to 0.06 nm. Furthermore, the filter allowed fast scanning of the output wavelength within the phase-matching bandwidth. A maximum average signal output of 1.6 W in pulses with a duration of 22 ps was obtained when the optical parametric oscillator was pumped four times above threshold with a 4-W pump source. With the present mirror set the signal and the idler wavelengths were tunable from, respectively, 740 to 930 nm and 1220 to 1830 nm. The total external power conversion efficiency was better than 55%.