量子光学学报, 2015, 21 (1): 93, 网络出版: 2015-04-14
520nm泵浦780nm+1560nm双共振光学参量振荡器
Doubly-resonant 780nm+1560nm Optical Parametric Oscillator Pumped by 520nm Laser
双共振光学参量振荡器 铷原子D2线 PPKTP晶体 doubly-resonant optical parametric oscillator (DRO rubidium D2 line PPKTP crystal
摘要
我们在实验中演示了520nm单频绿光泵浦的基于周期极化磷酸钛氧钾(PPKTP)晶体的780nm+1560nm双共振光参量振荡器,高效制备780nm+1 560nm连续可调谐双色下转换光场.该参量振荡器可输出93.3 mW的1 560nm单频激光和44.6 mW的780nm单频激光.通过改变PPKTP晶体的温度所得到的波长粗调范围为:信号光1 529.81nm ～ 1 573.83nm (～ 44nm),闲置光788.26nm ～ 777.20nm (～ 11nm);通过连续调谐520nm泵浦激光频率初步得到的闲置光在780.24nm(铷原子D2线)处频率连续调谐范围约1.6 GHz.
Abstract
We experimentally demonstrated a high-efficiency doubly-resonant optical parametric oscillator (DROPO) of 780nm+1 560nm continuously tunable two-color down-conversion optical fields pumped by 520nm single-frequency green laser based on the periodically-poled KTiOPO4(PPKTP) crystal. This DROPO can provide 93.3 mW at 1560nm and 44.6 mW at 780nm single-frequency lasers. Coarse wavelength tuning are 1 529.81nm～1 573.83nm (～44nm) for signal and 788.26nm～777.20nm (～ 11nm) for idler via changing the PPKTP crystal’s temperature;the preliminary continuous frequency tuning range is ～ 1.6 GHz around 780.24nm via continuously tuning 520nm pump laser’s frequency.
郭善龙, 葛玉隆, 张孔, 何军, 王军民. 520nm泵浦780nm+1560nm双共振光学参量振荡器[J]. 量子光学学报, 2015, 21(1): 93. GUO Shan-long, GE Yu-long, ZHANG Kong, HE Jun, WANG Jun-min. Doubly-resonant 780nm+1560nm Optical Parametric Oscillator Pumped by 520nm Laser[J]. Acta Sinica Quantum Optica, 2015, 21(1): 93.
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