计算物理 ›› 2012, Vol. 29 ›› Issue (6): 881-890.

• 论文 • 上一篇    下一篇

Doppler展宽准Λ型四能级系统中传播效应的位相相关性

刘中波, 樊锡君   

  1. 山东师范大学物理与电子科学学院, 济南 250014
  • 收稿日期:2012-03-13 修回日期:2012-06-08 出版日期:2012-11-25 发布日期:2012-11-25
  • 通讯作者: 樊锡君,E-mail:xjfanl08@163.com
  • 作者简介:刘中波(1981-),make,PhD,research in quantum optics,E-mail:liuzhongb0999@163.com
  • 基金资助:
    Supported by the National Natural Science Foundation of China(Grant No.11175105)

Phase Correlation in Propagation Effect of a Doppler Broadening Quasi-Λ Type Four-level System

LIU Zhongbo, FAN Xijun   

  1. College of Physics and Electronics, Shandong Normal University, Jinan 250014, China
  • Received:2012-03-13 Revised:2012-06-08 Online:2012-11-25 Published:2012-11-25
  • Supported by:
    Supported by the National Natural Science Foundation of China(Grant No.11175105)

摘要: 利用数值计算详细研究具有真空诱导相干的准Λ型四能级原子系统中探测场和驱动场之间的相对位相(Φ)对传播效应的影响。结果表明:通过选择Φ的取值可以获得更大的GWI和更长的存在无反转增益的传播距离,从而获得更高的LWI强度;Doppler展宽存在时,Doppler展宽宽度及探测场和驱动场传播方向对位相相关的GWI和LWI强度的空间演化有明显的调制作用。

关键词: 四能级系统, 传播, 相对位相, Doppler展宽, 无反转激光

Abstract: Influence of relative phase between probe and driving fields(Φ) Oil propagation effect of a Doppler broadened quasi-Λ type four-level atomic system with spontaneously generated coherence(SGC) is numerically studied.It is shown that by choosingΦ, we can obtain greater GWI and longer propagation distance where GWI exists and hence obtain higher LWI intensity.Doppler broadening width and propagation directions of probe and driving fields have considerable effect on phase·dependent spatial evolutions of GWI and LWI intensity.

Key words: four-level system, propagation effect, relative phase, Doppler broadening, lasing without inversion

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