High power pulse amplification of ytterbium-doped double-clad fiber amplifier

作     者：常丽萍 范薇 陈嘉琳 王利 陈柏 林尊琪 

作者机构：Shanghai Institute of Optics and Fine Mechanics Chinese Academy of SciencesShanghai 201800 

出 版 物：《Chinese Optics Letters》 (中国光学快报（英文版）)

年 卷 期：2007年第5卷第11期

页      面：624-627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] 

主　　题：Amplification Distortion (waves) Doping (additives) Rare earth additions Spontaneous emission Ytterbium 

摘      要：By solving a set of time-dependent equations, the characteristics of the ytterbium-doped double-clad fiber amplifier are presented. Besides the steady state in the fiber of the upper-state population, pump power and amplified spontaneous emission without the input signal, the dynamic characteristics of the high power Gaussian pulse amplification like the evolution of pulse waveform distortion, upper-state population distribution and stored energy and pulse energy of the amplifier under the forward and backward pump, are simulated. The relations between the output pulse energy of the amplifier and the different input pulse peak power or pump power are also discussed. The models and results can provide important guide for the design and optimization of the high power pulse amplification.