摘要
通过内置周期极化磷酸氧钛钾晶体的半整块谐振腔,采用铯原子D2线的抽运光实现了426nm的蓝光倍频输出。实验采用了相对松散的聚焦,明显改善了基频光和倍频光吸收诱发的热效应。采用305 mW的模式匹配基频光,获得了117.2mW的倍频蓝光,倍频过程中最高光-光转化效率达到42%;84.5mW蓝光在约1h内的功率起伏为0.48%。结果表明,所提方法可实现倍频光的稳定输出,在量子光学、光与物质相互作用等领域具有广阔的应用前景。
The 426 nm blue light frequency doubling output based on the pumping light corresponding to D2 line of cesium atom is realized by the semi-monolithic resonant cavity embedded with a periodically poled potassium titanyl phosphate （PPKTP） crystal. Relatively loose focusing is adopted in experiment, which obviously improves the thermal effect induced by the absorption of fundamental frequency light and frequency doubling light. Frequency doubling blue light with the power of 117.2 mW is obtained based on the mode-matched fundamental frequency light with the power of 305 roW, and the highest optical-optical conversion efficiency in the frequency doubling process is up to 42%. The power fluctuation of blue light with the power of 84.5 mW is 0.48% in about an hour. Results show that the proposed method can realize the stable output of frequency doubling light, and has wide application prospects in the field of quantum optics and the interaction between light and matter.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2017年第4期210-216,共7页
Acta Optica Sinica
基金
国家自然科学基金(91336107
61275210
61227902
11634008)
山西省自然科学基金(2014021011-2)
关键词
激光光学
倍频光
半整块谐振腔
周期极化磷酸氧钛钾晶体
热效应
laser optics
frequency doubling light
semi-monolithic resonant cavity
periodically poled potassium titanyl phosphate crystal
thermal effect
