Blue-Extended Supercontinuum Generation in Photonic Crystal Fibers with Picosecond Pulse Pumping
ZHU Xian, ZHANG Xin-Ben, CHEN Xiang, PENG Jing-Gang, DAI Neng-Li, LI Jin-Yan**
Wuhan National Laboratory of Optoelectronics, Huazhong University of Science and Tecnology, Wuhan 430074
Abstract :We report supercontinuum generation extending to the blue spectral region using pulses of 1.8 ps duration at 1040 nm in GeO2 -doped core photonic crystal fibers. A spectrum in fundamental mode spanning from 415 nm to beyond 1750 nm is generated in a uniform photonic crystal fiber (PCF). A zero dispersion wavelength decreasing PCF is fabricated to optimize the parameters for deeper blue components generated by cross-phase modulation and group-velocity matching. Although the PCF is pumped at a low input power of 1.3 W in anomalous dispersion and relatively far from the zero dispersion wavelength, a flat continuum covering 406.1–671.8 nm is generated, which is of primary importance in a number of bio-photonic applications such as fluorescence imaging microscopy.
收稿日期: 2012-08-31
出版日期: 2013-03-04
:
42.72.Bj
(Visible and ultraviolet sources)
42.81.Dp
(Propagation, scattering, and losses; solitons)
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