@article{FICEK:1995:10.1103/PhysRevA.51.4062,
author = {FICEK, Z and DALTON, BJ and KNIGHT, PL},
doi = {10.1103/PhysRevA.51.4062},
journal = {Physical Review A: Atomic, Molecular and Optical Physics},
pages = {4062--4077},
title = {Fluorescence intensity and squeezing in a driven three-level atom: Ladder case.},
url = {http://dx.doi.org/10.1103/PhysRevA.51.4062},
volume = {51},
year = {1995}
}

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TY  - JOUR
AB  - A theoretical study is made of the steady-state intensity and squeezing properties of the fluorescent light from a three-level-atom system in a ladder configuration, which is subject to spontaneous-emission decay to the electromagnetic-field vacuum. Two cases are examined: in the equispaced (ES) level case, the two atomic transition frequencies are nearly equal and two photon absorption processes occur from a single coherent laser field that couples both transitions and has a small detuning from each; in the non- equispaced (NES) level case, the atomic transition frequencies are rather different and two photon absorption processes occur from two coherent laser fields, each coupled to a single transition and in near resonance with it. In both cases, a situation of small two-photon detuning occurs. Optical Bloch equations for the atomic density matrix in rotating frames are given and matrix expressions for determining the steady-state populations and coherences are obtained. Analytic expressions are also given for special cases. The fluorescent intensity is obtained from the populations of the intermediate and upper states, with the normally ordered variance (NOV) for quadrature components of the fluorescent field involving, in addition, the atomic coherences. The fluorescent intensities are shown graphically as a function of two-photon detuning for a variety of one-photon detunings and Rabi frequencies for the ES and NES cases.In both cases, the fluorescent intensities show the well known resonances from the upper state at zero two-photon detuning and from the intermediate state at zero one-photon detuning for the lower transition. However, further resonances are also found. The intermediate-state intensity displays a resonance at zero two-photon detuning. Also, the upper-state intensity shows a resonance at zero one-photon detuning for the upper transition, but only for the NES case; evidently, the transfer rate from upper to lower transition coherences destroys thi
AU  - FICEK,Z
AU  - DALTON,BJ
AU  - KNIGHT,PL
DO  - 10.1103/PhysRevA.51.4062
EP  - 4077
PY  - 1995///
SN  - 1050-2947
SP  - 4062
TI  - Fluorescence intensity and squeezing in a driven three-level atom: Ladder case.
T2  - Physical Review A: Atomic, Molecular and Optical Physics
UR  - http://dx.doi.org/10.1103/PhysRevA.51.4062
UR  - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:A1995RA43100089&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=a2bf6146997ec60c407a63945d4e92bb
UR  - http://hdl.handle.net/10044/1/393
VL  - 51
ER  - 

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