Spectra of molecular gases trapped in deep optical lattices

被引:8
作者
Barker, P. F. [1 ]
Purcell, S. M. [1 ]
Shneider, M. N. [2 ]
机构
[1] UCL, Dept Phys & Astron, London WC1E 6BT, England
[2] Princeton Univ, Dept Mech & Aerosp Engn, Princeton, NJ 08544 USA
来源
PHYSICAL REVIEW A | 2008年 / 77卷 / 06期
关键词
D O I
10.1103/PhysRevA.77.063409
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We study the spectral profile of Rayleigh scattered light from molecular species trapped in optical lattices created by strong fields in the 10(16) W m(-2) range. We show that, for lattices with well depths on the order of 100 K, the motional sidebands imparted on spectra are shifted from the central Dicke-narrowed Rayleigh peak by hundreds of MHz. Our calculations for these short duration (30 ns) lattices show that these spectral features appear even in room temperature gases suggesting a new technique for measuring gas composition based on the frequency offset of the sidebands. Finally, we study the role of field-induced molecular alignment within the lattice and calculate its effect on the shape and position of the sidebands.
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页数:5
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