Original scientific paper

Study of velocity-dependent collision effects on Lamb dip and crossover resonances in three-level system

Bibhas K. Dutta ; Department of Physics, J. K. College, Purulia - 723 101, India
Prasanta K. Mahapatra ; Department of Physics and Technophysics, Vidyasagar University, Midnapore - 721 102, India

Abstract

We discuss the effects of phase-dephasing and velocity-changing collisions on saturated absorption line shapes studied in an open V-type system under the semi-classical density-matrix formalism. It has been noted that the traces of Lamb dips and crossover resonance dip lying within the Doppler-broadened contour can vanish in the presence of a strong saturating field if a sufficient contribution of collisional dephasing effect is present. Asymmetry may be introduced in the wings of saturated line profiles for a small contribution of collision kernel.

Keywords

three level systems; saturation spectroscopy; Lamb dip and crossover resonances; phase-dephasing and velocity-changing collisions

Hrčak ID:

302141

URI

https://hrcak.srce.hr/302141

Publication date:

1.10.2006.

Article data in other languages: croatian

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