Generation of a compact high-power high-efficiency normal-dispersion pumping supercontinuum in silica photonic crystal fiber pumped with a 1064-nm picosecond pulse  

作　　者：谌鸿伟 靳爱军 杨未强 陈胜平 侯静 陆启生 

机构地区：[1]College of Optoelectronic Science and Engineering,National University of Defense Technology

出　　处：《Chinese Physics B》2013年第6期405-409,共5页中国物理B（英文版）

基　　金：supported by the International Science and Technology Cooperation Program of the Ministry of Science and Technology of China (Grant No. 2012DFG11470);the State Key Program of the National Natural Science Foundation of China (Grant No. 61235008);the National Natural Science Foundation of China (Grant Nos. 10904173,11004247,11274385,61077076,and 61007037);the Science Foundation for Distinguished Young Scholars of Hunan Province,China (Grant No. 12JJ1010);the Postgraduate Innovation Foundation of Hunan Province,China (Grant No. CX2011B034);the Postgraduate Innovation Foundation of National University of Defense Technology,China (Grant No. B110704)

摘　　要：Broadband normal dispersion pumping supercontinuum （SC） generation in silica photonic crystal fiber （PCF） is investigated in this paper. A 1064-nm picosecond fiber laser is used to pump silica PCF for the SC generation. The length of PCF is optimized for the most efficient stimulated Raman scattering process in the picosecond pump pulse region. The first stimulated Raman Stokes peak is located in the anomalous dispersion regime of the PCF and near the zero dispersion wavelength; thus the SC generation process can benefit from both a normal dispersion pumping scheme and an anomalous dispersion pumping scheme. The 51.7-W SC spanning from about 700 nm to beyond 1700 nm is generated with an all-fiber configuration, and the pump-to-SC conversion efficiency is up to 90%. In order to avoid the output fiber end face damage and increase the stability of the system, an improved output solution for the high power SC is proposed in our experiment. This high-efficiency near-infrared SC source is very suitable for applications in which average output power and spectral power density are firstly desirable.Broadband normal dispersion pumping supercontinuum （SC） generation in silica photonic crystal fiber （PCF） is investigated in this paper. A 1064-nm picosecond fiber laser is used to pump silica PCF for the SC generation. The length of PCF is optimized for the most efficient stimulated Raman scattering process in the picosecond pump pulse region. The first stimulated Raman Stokes peak is located in the anomalous dispersion regime of the PCF and near the zero dispersion wavelength; thus the SC generation process can benefit from both a normal dispersion pumping scheme and an anomalous dispersion pumping scheme. The 51.7-W SC spanning from about 700 nm to beyond 1700 nm is generated with an all-fiber configuration, and the pump-to-SC conversion efficiency is up to 90%. In order to avoid the output fiber end face damage and increase the stability of the system, an improved output solution for the high power SC is proposed in our experiment. This high-efficiency near-infrared SC source is very suitable for applications in which average output power and spectral power density are firstly desirable.

关 键 词：fiber laser SUPERCONTINUUM photonic crystal fiber 

分 类 号：TN253[电子电信—物理电子学]