双零色散介质中cosh-Airy脉冲超连续谱产生与操控  

Supercontinuum generation and manipulation of cosh-Airy pulse in double-zero dispersion medium

作　　者：文兵 邓杨保 韦家谋 张赛文 陈德鹏 邓曙光 张光富 Wen Bing;Deng Yangbao;Wei Jiamou;Zhang Saiwen;Chen Depeng;Deng Shuguang;Zhang Guangfu(All-solid-state Energy Storage Materials and Devices Key Laboratory of Hunan Province,College of Information and Electronic Engineering,Hunan City University,Yiyang 413000,China;Key Laboratory for Micro-/Nano-Optoelectronic Devices of Ministry of Education,School of Physics and Electronics,Hunan University,Changsha 410082,China)

机构地区：[1]湖南城市学院信息与电子工程学院全固态储能材料与器件湖南省重点实验室,湖南益阳413000 [2]湖南大学物理与微电子科学学院微纳光电器件教育部重点实验室,湖南长沙410082

出　　处：《红外与激光工程》2022年第7期156-166,共11页Infrared and Laser Engineering

基　　金：国家自然科学基金(11947088);湖南省自然科学基金(2022JJ50276,2021JJ30075);湖南省教育厅科学研究项目(21A0499,20B107,20A095)。

摘　　要：结合分步傅里叶方法和四阶Runge-Kutta积分法,研究了有限能量cosh-Airy脉冲在双零色散介质中的超连续谱产生与操控。首先,详细讨论了特征参数截断系数a、初始啁啾C和分布因子χ_(0)对cosh-Airy脉冲在双零色散介质中的演化影响,并统计了a、C和χ_(0)对超连续谱宽度的影响。然后,进一步研究了高阶非线性效应对cosh-Airy脉冲产生超连续谱的影响。结果表明:通过操控coshAiry脉冲的特征参数可以控制超连续谱的宽度;当存在高阶非线性效应时,超连续谱的平坦性会受到影响。研究结果为超连续谱的产生和操控以及宽带激光光源提供一些理论基础。Combining the split-step Fourier method with the fourth-order Runge-Kutta integration method,the manipulation and generation of supercontinuum by finite energy cosh-Airy pulses in a double-zero dispersion media was investigated.Firstly,the influences of truncation coefficient a,initial chirp C and distribution factor χ_(0) on the evolution of cosh-Airy pulses in double-zero dispersion medium were discussed in detail,and the influences of a,C and χ_(0) on the width of supercontinuum width were statistically analyzed.Then,the influences of higher-order nonlinear effects on supercontinuum generation of cosh-Airy pulse was further studied.The results show that the width of supercontinuum can be controlled by manipulating the characteristic parameters of cosh-Airy pulses.The flatness of supercontinuum is affected with consideration of high-order nonlinear effects.The results provide some theoretical basis for manipulation and generation of supercontinuum and broadband laser sources.

关 键 词：cosh-Airy脉冲 双零色散介质 超连续谱 操控 

分 类 号：O437[机械工程—光学工程]