INFLUENCE OF THE DIPOLE-DIPOLE INTERACTION ON VELOCITY-SELECTIVE COHERENT POPULATION TRAPPING

被引：14

作者：

GOLDSTEIN, E ^{[1
]}

PAX, P ^{[1
]}

SCHERNTHANNER, KJ ^{[1
]}

TAYLOR, B ^{[1
]}

MEYSTRE, P ^{[1
]}

机构：

[1] UNIV INNSBRUCK, INST THEORET PHYS, A-6020 INNSBRUCK, AUSTRIA

来源：

APPLIED PHYSICS B-LASERS AND OPTICS | 1995年 / 60卷 / 2-3期

关键词：

D O I：

10.1007/BF01135858

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We analyze the influence of the dipole-dipole interaction between ground and excited state atoms on atomic cooling by velocity-selective coherent population trapping. We consider two three-level atoms in the Lambda-configuration, interacting with two counterpropagating laser fields as well as with the electromagnetic vacuum modes. The elimination of these modes in the Born-Markov approximation results in spontaneous decay, which is essential in providing the momentum diffusion necessary for cooling, as well as a two-body dipole-dipole interaction between ground-and excited-state atoms. The corresponding two-body master equation is solved numerically by Monte-Carlo wave-function simulations. Our main result is that although a dark state survives the inclusion of dipole-dipole interactions, the presence of this interaction can significantly slow down the cooling process for sufficiently high atomic densities.

引用

页码：161 / 167

页数：7

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