中国激光, 2017, 44 (2): 0201018, 网络出版: 2017-02-22
基于光子晶体光纤的百瓦超连续谱的产生
Hundred-Watt-Level Supercontinuum Spectrum Generation Based on Photonic Crystal Fiber
激光光学 光纤光学 超连续谱 光子晶体光纤 斜率效率 laser optics fiber optics supercontinuum spectrum photonic crystal fiber slope efficiency
摘要
为得到脉冲宽度为12 ps、中心波长为1064 nm的高功率超连续谱,提出了一种全光纤结构的超连续谱光源。将该光源作为抽运源,其输出功率在芯径为10 mm的掺镱光纤中被放大至189 W。利用窄带滤波器、级间隔离器对脉冲信号进行放大,将放大后的脉冲信号注入长度为0.5 m的光子晶体光纤,产生了光谱范围为460~1700 nm、输出功率为102.8 W的超连续谱。由于存在量子亏损和光谱传输损耗,当抽运功率从1.5 W提高至189 W时,超连续谱光-光斜率效率从90%降低至20%。
Abstract
A supercontinuum spectrum source with all-fiber structure is proposed to obtain high power supercontinuum spectrum with the pulse width of 12 ps and the center wavelength of 1064 nm. The source is used as the pump source, and the output power is amplified to 189 W in a Yb-doped fiber with a length of 10 mm. A narrow-band filter and a interstage isolator are used to amplify the pulse signal. The amplified pulse signal is injected into a photonic crystal fiber with a length of 0.5 m, and supercontinuum spectrum is generated with the spectrum range of 460-1700 nm and the output power of 102.8 W. For the existence of quantum defect and spectrum transmission loss, the light-light slope efficiency of the supercontinuum spectrum decreases from 90% to 30% when the pump power increases from 1.5 W to 189 W.
赵磊, 李超, 黎玥, 王琳, 张昊宇. 基于光子晶体光纤的百瓦超连续谱的产生[J]. 中国激光, 2017, 44(2): 0201018. Zhao Lei, Li Chao, Li Yue, Wang Lin, Zhang Haoyu. Hundred-Watt-Level Supercontinuum Spectrum Generation Based on Photonic Crystal Fiber[J]. Chinese Journal of Lasers, 2017, 44(2): 0201018.