A sample, opaque at an inhomogeneously-broadened transition, can be made transparent or even strongly amplifying without inversion by two control lower-frequency lasers. Applications for frequency-tunable filtering, photon switching and amplification in Raman schemes are discussed.
© 2004 Optical Society of America
(020.0020) Atomic and molecular physics : Atomic and molecular physics
(020.1670) Atomic and molecular physics : Coherent optical effects
(190.0190) Nonlinear optics : Nonlinear optics
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes
A. K. Popov, S. A. Myslivets, and T. F. George, " Coherence-controlled optical switching and amplification without inversion in a strongly-absorbing inhomogeneously-broadened medium," in Nonlinear Optics: Materials, Fundamentals and Applications, Technical Digest (CD) (Optical Society of America, 2004), paper WD28.