Bichromatic spectroscopy of coherent population trapping resonances with phase‐locked fields | Zendy

Akimov A. V. | Zendy; Matveev A. N. | Zendy; Sokolov A. V. | Zendy; Sorokin V. N. | Zendy; Kanorsky S. I. | Zendy; Kolachevsky N. N. | Zendy

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Bichromatic spectroscopy of coherent population trapping resonances with phase‐locked fields

Author(s) -

Akimov A. V.,

Matveev A. N.,

Sokolov A. V.,

Sorokin V. N.,

Kanorsky S. I.,

Kolachevsky N. N.

Publication year - 2005

Publication title -

journal of raman spectroscopy

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.748

H-Index - 110

eISSN - 1097-4555

pISSN - 0377-0486

DOI - 10.1002/jrs.1290

Subject(s) - femtosecond , laser , atomic physics , rubidium , excited state , physics , trapping , terahertz radiation , spectroscopy , population , phase (matter) , optics , chemistry , ecology , demography , organic chemistry , potassium , quantum mechanics , sociology , biology

We propose a new approach to the study of coherent population trapping (CPT) resonances using a phase‐coherent bichromatic light source based on a mode‐locked femtosecond laser as an intermediate frequency coupler. The source consists of two diode lasers tuned to the rubidium D 2 line (780 nm) which are phase locked to different longitudinal modes of a femtosecond laser MIRA‐900F with 75 MHz repetition rate. Using this bichromatic source with a stable differential frequency, we excited and investigated the CPT resonances in the three‐level system 5s S 1/2 ( F = 2) ↔ 5s P 3/2 ( F = 2) ↔ 5s S 1/2 ( F = 3) of the 85 Rb atom. Potentially, this method opens up the possibility of coherently exciting Raman transitions with differential frequencies up to hundreds of terahertz. Copyright © 2005 John Wiley & Sons, Ltd.

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