TY - JOUR

T1 - Gain and Lasing in Two-Level Optically Dense Resonance Media without Population Inversion Based on Cooperative Phenomena upon Interaction of Light with Matter

AU - Bagaev, S. N.

AU - Egorov, V. S.

AU - Fedorov, A. N.

AU - Chekhonin, I. A.

PY - 1999/6/1

Y1 - 1999/6/1

N2 - A new approach to the development of sources of coherent radiation is studied both theoretically and experimentally. The approach is based on parametric excitation of collective modes of the "field + atoms" system in two-level resonance media without population inversion, with the super-critical coupling between the field and matter subjected to stimulated modulation. The theoretical results include a description of computer simulation of the gain and stimulated emission based on quantitative formalism of the semiclassical theory of laser physics (Maxwell-Bloch equations). Experimental study of coherent light amplification in optically dense media without population inversion was carried out using a multimode pulsed dye laser in the two-wave pump-probe configuration. As the absorbing medium, we used the positive column of a glow discharge with metastable Ne atoms. A qualitative agreement is demonstrated between the data of numerical simulation and experimental spectral characteristics and dynamics of coherent amplification and lasing.

AB - A new approach to the development of sources of coherent radiation is studied both theoretically and experimentally. The approach is based on parametric excitation of collective modes of the "field + atoms" system in two-level resonance media without population inversion, with the super-critical coupling between the field and matter subjected to stimulated modulation. The theoretical results include a description of computer simulation of the gain and stimulated emission based on quantitative formalism of the semiclassical theory of laser physics (Maxwell-Bloch equations). Experimental study of coherent light amplification in optically dense media without population inversion was carried out using a multimode pulsed dye laser in the two-wave pump-probe configuration. As the absorbing medium, we used the positive column of a glow discharge with metastable Ne atoms. A qualitative agreement is demonstrated between the data of numerical simulation and experimental spectral characteristics and dynamics of coherent amplification and lasing.

UR - http://www.scopus.com/inward/record.url?scp=0347032697&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0347032697

VL - 86

SP - 814

EP - 819

JO - OPTICS AND SPECTROSCOPY

JF - OPTICS AND SPECTROSCOPY

SN - 0030-400X

IS - 6

ER -