THEORY OF SATURATION SPECTROSCOPY INCLUDING COLLISIONAL EFFECTS

被引:29
作者
BERMAN, PR [1 ]
LIAO, PF [1 ]
BJORKHOLM, JE [1 ]
机构
[1] BELL TEL LABS INC,HOLMDEL,NJ 07733
来源
PHYSICAL REVIEW A | 1979年 / 20卷 / 06期
关键词
D O I
10.1103/PhysRevA.20.2389
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
A theory of saturation spectroscopy in three-level gas-vapor systems, including collisional effects, is presented. Using a model of collisions in which they are phase interrupting in their effect on level coherences and velocity changing in their effect on level population densities, the authors calculate the absorption profile of a weak probe field on a given transition when an arbitrarily strong pump field acts on a coupled transition. Line shapes are derived for an arbitrary collision kernel describing the velocity-changing collisions, and these line shapes are evaluated for the collision kernel proposed by Keilson and Storer. Various limiting forms for the line shapes are derived and representative line shapes are displayed. Several new features of the line shapes, including collisionally induced increased probe absorption are discussed. The line shapes are seen to reflect the various collisional processes that may occur in atomic or molecular systems. © 1979 The American Physical Society.
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页码:2389 / 2404
页数:16
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