General expressions obtained earlier for nonlinear photogeneration rates of electron–hole pairs (EHPs) under conditions of n-photon–one-photon resonance on adjacent interband transitions are used to analyze manifestations of the resonance optical Stark effect in the case n=4. Because of the appearance of new Van Hove singularities in the electronic band spectrum reconstructed in the field of a strong electromagnetic wave, the multiphoton EHP-generation rate W(4) is a nonmonotonic function of radiation intensity j and includes a region of extremely rapid growth, in which a small change of j causes W(4) to increase by several orders of magnitude.
© 2014 Optical Society of America
Original Manuscript: June 13, 2013
Published: January 23, 2014
M. A. Bondarev and E. Yu. Perlin, "Multiphoton generation of electron–hole pairs accompanying the resonance optical Stark effect," J. Opt. Technol. 80, 661-666 (2013)