High-Precision Spectroscopy with Counterpropagating Femtosecond Pulses

被引：43
|
作者：
Barmes, Itan [1 ]
Witte, Stefan [1 ]
Eikema, Kjeld S. E. [1 ]
机构：
[1] Vrije Univ Amsterdam, Dept Phys & Astron, LaserLaB, NL-1081 HV Amsterdam, Netherlands
来源：
PHYSICAL REVIEW LETTERS | 2013年 / 111卷 / 02期
关键词：
FREQUENCY COMB SPECTROSCOPY; 2-PHOTON ABSORPTION; LINE-SHAPE; TRANSITIONS; METROLOGY;
D O I：
10.1103/PhysRevLett.111.023007
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
An experimental realization of high-precision direct frequency comb spectroscopy using counter-propagating femtosecond pulses on two-photon atomic transitions is presented. The Doppler broadened background signal, hampering precision spectroscopy with ultrashort pulses, is effectively eliminated with a simple pulse shaping method. As a result, all four 5S-7S two-photon transitions in a rubidium vapor are determined with both statistical and systematic uncertainties below 10(-11), which is an order of magnitude better than previous experiments on these transitions.
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页数：5
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