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Proceedings Paper

Transverse effects in different schemes of inversionless amplification
Author(s): Inna L. Plastun
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Paper Abstract

Propagation of a weak probe optical beam through a three- level medium pumped with a microwave strong beam is numerically studied. Three various schemes of transitions under the conditions providing the amplification of the probe field without inversion are taken to calculate the atomic polarization which enters the paraxial wave equations. Diffraction and self-action of beams due to nonlinear absorption and refraction are properly taken into account. These effects together with linear absorption and refraction form a complex distribution of gain across the beams. As a result the amplified beam acquires ring transverse patterns and slight asymmetry in the frequency characteristics.

Paper Details

Date Published: 20 March 2000
PDF: 12 pages
Proc. SPIE 4002, Saratov Fall Meeting '99: Laser Physics and Spectroscopy, (20 March 2000); doi: 10.1117/12.380103
Show Author Affiliations
Inna L. Plastun, Saratov State Technical Univ. (Russia)


Published in SPIE Proceedings Vol. 4002:
Saratov Fall Meeting '99: Laser Physics and Spectroscopy
Vladimir L. Derbov; Leonid A. Melnikov; Vladimir P. Ryabukho, Editor(s)

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