Strong-field multifrequency electromagnetically induced transparency (5 pages)

Pablo Barberis-Blostein

Wei Zhong Jiang, Q.-f. Chen, Y.-s. Zhang

R. N. Shakhmuratov

Enrique Conejero Jarque, L. Roso

Based on ab initio simulations of the interaction of the hydrogen atom with a multifrequency ultrashort laser pulse in the strong-field regime, coherent population trapping is found. It leads to the inhibition of the ionization process and, hence, electromagnetically induced transparency, provided that certain two-photon resonance conditions are satisfied. This effect opens additional possibilities to detect phase-locked trains of attosecond pulses.

H.X. Chen, Alan V. Durrant, Joan A. Vaccaro +1 more

С. В. Сазонов

An approximate operator approach that is equivalent to the mathematical Wentzel-Kramers-Brillouin method and allows one to solve the set of constitutive equations for an N -level quantum medium resonantly interacting with multifrequency optical pulses is proposed. The transitions occurring via a common level with the ordinal number j are considered in detail. It is shown that, for j =1, the self-induced transparency regime is realized, whereas, at j=N , the regime of electromagnetically induced transparency is realized. Within the framework of the WKB approximation, an expression that represents the area theorem for multifrequency resonant pulses is derived.