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10 papers · 2 filters
Coherence-controlled transparency and far-from-degenerate parametric gain in a strongly-absorbing Doppler-broadened medium
Thomas F. George, A. K. Popov
An inversionless gain of anti-Stokes radiation above the oscillation threshold in an optically-dense far-from-degenerate double-Lambda Doppler-broadened medium accompanied by Stoke…
Inversionless gain in a three-level system driven by a strong field and collisions
A. K. Popov, S. A. Myslivets, Gao Jin-yue +2
Inversionless gain in a three-level system driven by a strong external field and by collisions with a buffer gas is investigated. The mechanism of populating of the upper laser lev…
Squeezing of electromagnetic field in a cavity by electrons in Trojan states
Piotr Kochanski, Zofia Bialynicka-Birula, Iwo Bialynicki-Birula
The notion of the Trojan state of a Rydberg electron, introduced by I.Bialynicki-Birula, M.Kaliński, and J.H.Eberly (Phys. Rev. Lett. 73, 1777 (1994)) is extended to the case of th…
Interference at quantum transitions: lasing without inversion and resonant four-wave mixing in strong fields at Doppler-broadened transitions
A. K. Popov
An influence of nonlinear interference processes at quantum transitions under strong resonance electromagnetic fields on absorption, amplification and refractive indices as well as…
Enhanced four-wave mixing via elimination of inhomogeneous broadening by coherent driving of quantum transition with control fields
Alexander K. Popov, Alexander S. Bayev
We show that atoms from wide velocity interval can be concurrently involved in Doppler-free two-photon resonant far from frequency degenerate four-wave mixing with the aid of auxil…
Two-mode Nonlinear Coherent States
Xiao-Guang Wang
Two-mode nonlinear coherent states are introduced in this paper. The pair coherent states and the two-mode Perelomov coherent states are special cases of the two-mode nonlinear coh…