中国激光, 2012, 39 (2): 0202002, 网络出版: 2011-12-22   

超高斯脉冲反饱和吸收效应响应特性理论模拟

Dynamic Response Characteristics of Super-Gaussian Pulse to Reverse Saturable Absorption Effect
作者单位
中国工程物理研究院激光聚变研究中心, 四川 绵阳 621900
摘要
基于非线性传输方程与五能级速率方程的耦合模型分析了超高斯脉冲在反饱和吸收(RSA)作用下的动态响应特性。研究了脉冲时空波形在RSA材料中的演化规律以及脉冲与材料相互作用的动力学过程。讨论了单重态第一激发态寿命对输出脉冲时空波形的影响,并优化了材料参数以避免时空畸变。对新型RSA材料的开发以及在时空波形敏感领域的应用具有指导意义。
Abstract
The dynamic response characteristics of super-Gaussian pulse to reverse saturable absorption (RSA) effect are studied theoretically based on a couple model of nonlinear propagation and rate equations. The spatiotemporal evolution of laser intensity in RSA material and the dynamics of the interplay between the pulse and the carrier are investigated. Effects of the variation of excited-state lifetime are discussed and material parameters are optimized to avoid spatiotemporal distortion. The calculation supports guidelines for design of new RSA materials in spatiotemporal shape sensitive applications.
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程坤, 赵军普, 胡东霞, 代万俊, 袁强, 周维, 张鑫, 邓武, 蒋学君, 张崑, 张小民, 景峰. 超高斯脉冲反饱和吸收效应响应特性理论模拟[J]. 中国激光, 2012, 39(2): 0202002. Cheng Kun, Zhao Junpu, Hu Dongxia, Dai Wanjun, Yuan Qiang, Zhou Wei, Zhang Xin, Deng Wu, Jiang Xuejun, Zhang Kun, Zhang Xiaomin, Jing Feng. Dynamic Response Characteristics of Super-Gaussian Pulse to Reverse Saturable Absorption Effect[J]. Chinese Journal of Lasers, 2012, 39(2): 0202002.

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