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发散光束抽运的宽带光参量啁啾脉冲放大系统的理论研究
引用本文:刘华刚,章若冰,张海清,朱晨,马晶,王清月. 发散光束抽运的宽带光参量啁啾脉冲放大系统的理论研究[J]. 物理学报, 2007, 56(8): 4635-4641
作者姓名:刘华刚  章若冰  张海清  朱晨  马晶  王清月
作者单位:天津大学精密仪器与光电子工程学院,光电信息技术科学教育部重点实验室,天津 300072
基金项目:国家重点基础研究发展计划(973计划);教育部高等学校博士学科点专项科研基金
摘    要:对发散光束抽运的光参量啁啾脉冲放大器的增益带宽进行了系统的理论研究.采用空间傅里叶变换和四阶Runge-Kutta算法,分别模拟了非衍射极限情况下的高斯光束和空间频谱为矩形的发散光束作为抽运光时的增益曲线.结果表明:不管是在可见光或是在近红外光谱区,用发散光束均可以明显地改善光参量啁啾脉冲放大系统的增益带宽.选取合适的发散角和抽运光强,可以获得高增益、宽谱带的信号光输出.关键词:光参量啁啾脉冲放大增益带宽发散角高斯光束

关 键 词:光参量啁啾脉冲放大  增益带宽  发散角  高斯光束
文章编号:1000-3290/2007/56(08)/4635-07
收稿时间:2006-07-10
修稿时间:2007-04-06

Theoretical study of optical parametric chirped pulse amplification pumped by divergent beams
Liu Hua-Gang,Zhang Ruo-Bing,Zhang Hai-Qing,Zhu Chen,Ma Jing,Wang Qing-Yue. Theoretical study of optical parametric chirped pulse amplification pumped by divergent beams[J]. Acta Physica Sinica, 2007, 56(8): 4635-4641
Authors:Liu Hua-Gang  Zhang Ruo-Bing  Zhang Hai-Qing  Zhu Chen  Ma Jing  Wang Qing-Yue
Affiliation:Key Laboratory of Opto-electronies Information Science and Technology of Ministry of Education, College of Precision Instrument and Opto-electronics Engineering, Tianfin University, Tianfin 300072, China
Abstract:The gain bandwidth of optical parametric chirped pulse amplification pumped by divergent beams has been theoretically studied.Several gain curves are simulated when the pump are non-diffraction-limited Gaussian beams or a beams having rectangular distribution in spatial spectrum respectively,using the method of Fourier transform and the fourth-order Runge-Kutta algorithm.The results show that the gain bandwidth of optical parametric chirped pulse amplification can be obviously improved by using divergent pump beams,either in the visible or in the near infrared region.Very high gain and broadband spectrum can be obtained if the divergence angle and intensity of the pump is selected properly.
Keywords:optical parametric chirped pulse amplification   gain bandwidth   divergence angle   Gaussian beam
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