Laser-pulse photoassociation in a thermal gas of atoms

被引：22

作者：

de Lima, Emanuel F. ^{[1
]}

Ho, Tak-San ^{[1
]}

Rabitz, Herschel ^{[1
]}

机构：

[1] Princeton Univ, Dept Chem, Frick Lab, Princeton, NJ 08544 USA

来源：

PHYSICAL REVIEW A | 2008年 / 78卷 / 06期

关键词：

association; atom-atom reactions; atom-photon collisions; multiphoton processes; optical pulse generation; photochemistry;

D O I：

10.1103/PhysRevA.78.063417

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A nonperturbative treatment is presented for laser-pulse-driven formation of heteronuclear diatomic molecules in a thermal gas of atoms. Based on the assumption of full controllability, the maximum possible photoassociation yield is obtained. A one-dimensional model is used for calculating the photoassociation probability as a function of the laser parameters as well as for different temperatures. The dependence of the photoassociation yield on the laser frequency and amplitude reveals complex patterns of one- and multiphoton transitions. The photoassociation yield induced by subpicosecond pulses of a priori fixed shape is very low compared to the maximum possible yield.

引用

页数：7

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