Effect of pulse width on near-infrared supercontinuum generation in nonlinear fiber amplifier

作     者：宋锐 雷成敏 陈胜平 王泽锋 侯静 

作者机构：College of Optoelectronic Science and Engineering National University of Defense Technology 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2015年第24卷第8期

页      面：351-355页

核心收录：

学科分类：080902[工学-电路与系统] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.11404404 and 11274385) the Outstanding Youth Fund Project of Hunan Province the Fund of Innovation of National University of Defense Technology,China(Grant No.B120701) 

主　　题：fiber laser supercontinuum pulse width fiber amplifier 

摘      要：The effect of pulse width on near-infrared supercontinuum generation in nonlinear fiber amplifier is investigated theoretically and experimentally. The complex Ginzburg–Landau equation and adaptive split-step Fourier method are used to simulate the propagation of pulses with different pulse widths in the fiber amplifier, and the results show that a longer pulse is more profitable in near-infrared supercontinuum generation if the central wavelength of the input laser lies in the normal dispersion region of the gain fiber. A four-stage master oscillator power amplifier configuration is adopted and the output spectra under picosecond and nanosecond input pulses are compared with each other. The experimental results are in good accordance with the simulations which can provide some guidance for further optimization of the system.