中强线性啁啾脉冲激发的共振调制频域双光子吸收过程研究  

Resonance-Mediated Two-Photon Absorption in Frequency-Domain under Intermediate-Strong Linearly Chirped Pulse

作　　者：任立庆[1] 王兆华[1] 邓仲勋[1] 李小龙[1] 刘孝丽 李凡[1] 郭林伟[1] 李增生[1] Liqing Ren;Zhaohua Wang;Zhongxun Deng;Xiaolong Li;Xiaoli Liu;Fan Li;Linwei Guo;Zengsheng Li(College of Energy and Engineering,Yulin University,Yulin Shaanxi)

机构地区：[1]榆林学院能源工程学院,陕西榆林

出　　处：《应用物理》2018年第8期362-367,共6页Applied Physics

基　　金：陕西省科学技术研究发展计划项目(批准号:2014K05-11)资助;榆林学院高层次人才启动基金(2013GK02)。

摘　　要：本文基于二阶微扰理论研究频域中强线性啁啾飞秒脉冲作用下双光子过程。详细分析了频域中啁啾因子、中心波长等参数对双光子跃迁的影响。阐明了弱场产生的双光子跃迁在频域的动态演化过程。进一步利用拓展的四阶微扰理论研究了中强场条件下双光子吸收过程的物理机理。相比复杂而昂贵的脉冲整形而言,本文提出的研究方案具有简单、经济且易操作的优势。Based on second-order perturbation theory, we study two-photon transition under an intermediate- strong linearly chirped pulse. We analyze the effects of chirp parameter, central wavelength and pulse width on two-photon transition in detail. We show the dynamic evolution of two-photon transition probability in frequency-domain. We additionally study two-photon absorption under intermediate-strong linearly chirped pulse. Compared with common scheme with pulse shaping, the proposed scheme has advantages, such as simplicity, economy and easy operation.

关 键 词：原子系统 干涉 啁啾脉冲 ATOMIC System Interference CHIRPED Pulse 

分 类 号：O43[机械工程—光学工程]