Erbium fiber laser-based direct frequency comb spectroscopy of Rb two-photon transitions

We demonstrate the direct frequency comb spectroscopy of Rb 5S→5D two-photon transitions directly excited by an optical frequency comb (OFC) in 1.5 μm fiber communication bands. A chain of comb spectral manipulation and quantum coherence control is implemented to enhance the efficiency of second har...

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Bibliographic Details
Published in:Optics letters 2013-12, Vol.38 (23), p.5028-5031
Main Authors: Wu, Jiutao, Hou, Dong, Qin, Zhengyu, Dai, Xiaoliang, Zhang, Zhigang, Zhao, Jianye
Format: Article
Language:English
Subjects:
Band spectra
Bands
Coherence
Excitation spectra
Lasers
Optical fibers
Spectra
Spectroscopy
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Summary:We demonstrate the direct frequency comb spectroscopy of Rb 5S→5D two-photon transitions directly excited by an optical frequency comb (OFC) in 1.5 μm fiber communication bands. A chain of comb spectral manipulation and quantum coherence control is implemented to enhance the efficiency of second harmonic OFC generation and eliminate the Doppler-broadening background. The direct frequency comb spectroscopy with clearly resolved transition lines is obtained. Our scheme provides a potential approach to realize the OFC at ~1.5 μm with high stability and accuracy.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.38.005028