Phase-dependent interaction in a four-level atomic configuration

Journal Article · Fri Nov 01 00:00:00 EST 2002 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.66.053409· OSTI ID:20632323

Morigi, Giovanna ^[1]; Franke-Arnold, Sonja; Oppo, Gian-Luca ^[2]

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1. Max-Planck-Institut fuer Quantenoptik, Hans-Kopfermannstrasse 1, D-85748 Garching (Germany)
2. Department of Physics, University of Strathclyde, 107 Rottenrow, Glasgow G4 0NG (United Kingdom)

We study a four-level atomic scheme interacting with four lasers in a closed-loop configuration with a diamond (diamond) geometry. We investigate the influence of the laser phases on the steady state. We show that, depending on the phases and the decay characteristic, the system can exhibit a variety of behaviors, including population inversion and complete depletion of an atomic state. We explain the phenomena in terms of multiphoton interference, and compare our results with the phase-dependent phenomena in the double-{lambda} scheme. This investigation may be useful for developing nonlinear optical devices, and for the spectroscopy and laser cooling of alkali-earth atoms.

• OSTI ID: 20632323
• Journal Information: Physical Review. A, Vol. 66, Issue 5; Other Information: DOI: 10.1103/PhysRevA.66.053409; (c) 2002 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ALKALINE EARTH METALS
ATOMS
COMPARATIVE EVALUATIONS
COOLING
DECAY
GEOMETRY
INTERFERENCE
LASER RADIATION
MULTI-PHOTON PROCESSES
NONLINEAR PROBLEMS
OPTICS
POPULATION INVERSION
QUANTUM MECHANICS
SPECTROSCOPY