中国激光, 2004, 31 (7): 777, 网络出版: 2006-06-12   

准连续双包层光纤激光在周期性极化铌酸锂晶体中倍频产生59 mW绿光

59 mW Green Light Second Harmonic Generation of Quasi-CW Double-Cladding Fiber Laser in Periodically Poled Lithium Niobate
作者单位
1 中国科学院上海光学精密机械研究所, 上海 201800
2 上海交通大学应用物理系,上海 200030
摘要
将周期性极化晶体和双包层光纤激光相结合获得绿光激光输出,是实现高光束质量、全固化、小型化、高效率绿光激光器的一个非常有前途的方向。采用周期性极化铌酸锂晶体(PPLN)光栅周期6.5 μm,长20 mm,宽5 mm,厚0.5 mm,对种子光注入式掺Yb双包层光纤激光器的准连续输出进行了倍频。研究了倍频光功率和转换效率随抽运光功率的变化关系,保持PPLN的控制温度为193.1℃,在抽运功率为650 mW时,得到6.7%的最高谐波转换效率,在抽运功率为970 mW时,得到了59 mW的最高绿光功率输出。
Abstract
The combination of the double-cladding fiber laser and the periodically poled material provides a compact and high efficiency approach for wavelength conversion with high beam quality. Green laser source is demonstrated using a combination of laser-diode-seeded Yb-doped double-cladding fiber laser and quasi-phase-matched second harmonic generation in periodically poled lithium niobate (PPLN). The uncoated 20-mm-long, 5-mm-wide, 0.5-mm-thick PPLN has 6.5 μm poling period and is temperature stabilized at 193.1℃. The 6.7% conversion efficiency and the 59 mW green light power are achieved with the pump fundamental average power of 650 mW and 970 mW, respectively.
参考文献

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朱晓峥, 周军, 楼祺洪, 董景星, 魏运荣, 陈险峰, 夏宇兴, 陈理军. 准连续双包层光纤激光在周期性极化铌酸锂晶体中倍频产生59 mW绿光[J]. 中国激光, 2004, 31(7): 777. 朱晓峥, 周军, 楼祺洪, 董景星, 魏运荣, 陈险峰, 夏宇兴, 陈理军. 59 mW Green Light Second Harmonic Generation of Quasi-CW Double-Cladding Fiber Laser in Periodically Poled Lithium Niobate[J]. Chinese Journal of Lasers, 2004, 31(7): 777.

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