Parametric amplification in atomic vapors in bichromatic and trichromatic pump fields

Cone radiation and parametric amplification in atomic vapors in a strong light field

Amplification of a probe field without population inversion in a two-level atom driven by a strong bichromatic pump field

Bichromatically pumped inversionless amplification

Light-wave squeezing during parametric amplification in a nonuniform pump field

Experimental studies of optical amplification and absorption by two-level atoms under strong, bichromatic field excitation

Parametric Amplification of Coupled Atomic and Optical Fields