强激光与粒子束, 2014, 26 (10): 101005, 网络出版: 2014-12-08
中红外超连续谱在氟化物光纤中的产生
Mid-IR supercontinuum generation in fluoride fiber
摘要
为获得高功率全光纤中红外超连续谱,采用自制的掺Er锁模光纤激光器作为种子源,激光经过两级放大至1.67 W,泵浦氟化物光纤,获得光谱覆盖1000~2400 nm的超连续光谱;光谱宽度随着泵浦功率的增加而展宽,当输出功率达到1.21 W时,转换效率为72%,并且产生的超连续谱被强烈的调制,在多个波长点处谱功率密度调制到0 mW/nm,但调制波长与泵浦功率无关。
Abstract
In order to obtain high power all-fiber mid-IR supercontinuum source, the fluoride fiber is pumped by homemade erbium-doped mode-locked fiber laser after two amplifiers to 1.67 W. The supercontinuum from 1 000 nm to 2 400 nm is obtained. The spectrum of the supercontinuum is gradually broadening with the increase of the pump laser power. The output power and the conversion efficiency are 1.21 W and 72% respectively. Experimental results show that supercontinuum has a strong spectrum modulation, and the power spectrum density decreases to 0 mW/nm at certain spectrum points which does not depend on pump power.
李超, 朱启华, 赵磊, 张永亮, 林宏奂, 梁小宝, 周泰斗, 郑万国. 中红外超连续谱在氟化物光纤中的产生[J]. 强激光与粒子束, 2014, 26(10): 101005. Li Chao, Zhu Qihua, Zhao Lei, Zhang Yongliang, Lin Honghuan, Liang Xiaobao, Zhou Taidou, Zheng Wanguo. Mid-IR supercontinuum generation in fluoride fiber[J]. High Power Laser and Particle Beams, 2014, 26(10): 101005.