Optoelectrical cooling of polar molecules

被引：44

作者：

Zeppenfeld, M. ^{[1
]}

Motsch, M. ^{[1
]}

Pinkse, P. W. H. ^{[1
]}

Rempe, G. ^{[1
]}

机构：

[1] Max Planck Inst Quantum Opt, D-85748 Garching, Germany

来源：

PHYSICAL REVIEW A | 2009年 / 80卷 / 04期

关键词：

electro-optical effects; laser cooling; molecule-photon collisions; radiation pressure; rotational-vibrational states; vibrational states; ATOMS; TRAP;

D O I：

10.1103/PhysRevA.80.041401

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present an optoelectrical cooling scheme for polar molecules based on a Sisyphus-type cooling cycle in suitably tailored electric trapping fields. Dissipation is provided by spontaneous vibrational decay in a closed level scheme found in symmetric-top rotors comprising six low-field-seeking rovibrational states. A generic trap design is presented. Suitable molecules are identified with vibrational decay rates on the order of 100 Hz. A simulation of the cooling process shows that the molecular temperature can be reduced from 1 K to 1 mK in approximately 10 s. The molecules remain electrically trapped during this time, indicating that the ultracold regime can be reached in an experimentally feasible scheme.

引用

页数：4