Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/208445

Title

Doppler-free two-photon resonances for atom detection and sum frequency stabilization

Author(s)

Akulshin, A. M.;  Hall, B. V.;  Ivannikov, V.;  Orel, A. A.;  Sidorov, A. I.

Abstract

We investigate the excitation of the 5D5/2 level in Rb atoms using counter-propagating laser beams, which are nearly resonant to the one-photon 5S1/2 → 5P3/2 and 5P3/2 → 5D5/2 transitions, ensuring that a sum of the optical frequencies corresponds to the 5S1/2 → 5D5/2 transition. The excitation produced by two-photon and stepwise processes is detected via spontaneously emitted fluorescence at 420 nm arising from the 6P3/2 → 5S1/2 transition. The dependences of blue fluorescence intensity on atomic density and laser detuning from the intermediate 5P3/2 level have been investigated. The sensitivity of the frequency-detuned bi-chromatic scheme for atom detection has been estimated. A novel method for sum-frequency stabilization of two free-running lasers has been suggested and implemented using two-photon Doppler-free fluorescence and polarization resonances.

Publication type

Journal article

Research centre

Swinburne University of Technology. Faculty of Engineering and Industrial Sciences. Centre for Atom Optics and Ultrafast Spectroscopy

Source

Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 44, no. 21 (Nov 2011), article no. 215401

Publication year

2011

FOR Code(s)

0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics;  0205 Optical Physics;  0307 Theoretical and Computational Chemistry

Keyword(s)

Atoms;  Doppler-free fluorescence;  Resonances;  Sum-frequency stabilization;  Two-photon excitation

Publisher

Institute of Physics Publishing

ISSN

0953-4075

Publisher URL

http://dx.doi.org/10.1088/0953-4075/44/21/215401

Copyright

Copyright © 2011 IOP Publishing Ltd.

Peer reviewed