Phys. Rev. Lett. 70, 1421 - 1424 (1993)Near dipole-dipole effects in lasing without inversion: An enhancement of gain and absorptionless index of refraction |
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Jonathan P. Dowling and Charles M. Bowden
Weapons Sciences Directorate, AMSMI-RD-WS-ST, Research, Development, Engineering Center, U.S. Army Missile Command, Redstone Arsenal, Alabama 35898-5248
Received 11 September 1992
We include the effect of density-dependent near dipole-dipole interactions in order to generalize the theory of a simple three-level system that exhibits lasing without inversion and an enhanced index of refraction at zero absorption. For certain values of atomic density, our generalized theory predicts a novel enhancement of inversionless gain and absorptionless index by more than 2 orders of magnitude.
©1993 The American Physical Society
URL: http://link.aps.org/abstract/PRL/v70/p1421
DOI: 10.1103/PhysRevLett.70.1421
PACS: 42.65.Pc, 42.50.Hz, 42.50.Md, 42.65.An
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