Low-frequency-noise diode laser for atom interferometry

被引:27
作者
Nazarova, Tatiana [1 ]
Lisdat, Christian [1 ]
Riehle, Fritz [1 ]
Sterr, Uwe [1 ]
机构
[1] Phys Tech Bundesanstalt, D-38116 Braunschweig, Germany
关键词
D O I
10.1364/JOSAB.25.001632
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We investigate the influence of fast frequency fluctuations of an interrogation laser on the obtainable signal-to-noise ratio in Ramsey-Borde atom interferometers. It is shown that the excessive high-frequency noise of diode lasers can degrade the signal-to-noise ratio significantly in an atom interferometer. To overcome these limitations, we have devised a low-noise light source by frequency filtering a diode laser in a high-finesse cavity and further amplifying the transmitted power by injection locking a solitary laser diode. When this laser source was used for atom interferometry with laser-cooled calcium atoms, the signal-to-noise ratio could be improved further by a factor of 3.5 compared with the use of the unfiltered 1 Hz linewidth laser source. (C) 2008 Optical Society of America
引用
收藏
页码:1632 / 1638
页数:7
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