Inversionless amplification by anisotropic molecules.
Switching from opaque via transparent to a strongly amplifying state is shown to be possible for molecular media without a change in the noninverted population of their energy levels.
Popov
A K
AK
Department of Physics & Astronomy, University of Wisconsin-Stevens Point, Stevens Point, Wisconsin 54481, USA. apopov@uwsp.edu
Slabko
V V
VV