中国物理B ›› 2013, Vol. 22 ›› Issue (6): 64211-064211.doi: 10.1088/1674-1056/22/6/064211
• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇 下一篇
谌鸿伟, 靳爱军, 杨未强, 陈胜平, 侯静, 陆启生
Chen Hong-Wei (谌鸿伟), Jin Ai-Jun (靳爱军), Yang Wei-Qiang (杨未强), Chen Sheng-Ping (陈胜平), Hou Jing (侯静), Lu Qi-Sheng (陆启生)
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 nearby the zero dispersion wavelength; thus the SC generation process can benefit from both normal dispersion pumping scheme and 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 the applications that the average output power and spectral power density are firstly desirable.
中图分类号: (Fiber lasers)