Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Acta Physica Academiae Scientiarum Hungaricae

A semiclassical treatment of many-level molecular systems

Vladimir V. Demchenko, N.M. El-Siragy

Published Oct 1, 1973• 0 citations
Publisher
DOI
10.1007/bf03158368

Related papers

Semiclassical formalism for the treatment of three-level systems

J.N. Elgin

Physics Letters A•Nov 1, 1980•80 citations

Strong-field theory of four-wave mixing

Alfred M. Levine, N. Chencinski, W. M. Schreiber +2 more

A nonperturbative semiclassical theory is presented for the treatment of four-wave mixing (FWM) in a four-level system. This treatment is based on a transformation to a generalized rotating frame followed by a numerical diagonalization of the resulting time-independent Hamiltonian. For strong fields, all resonant frequencies are shifted from the atomic (molecular) frequencies. Lines are split up in a way similar to the ac Stark effect for a two-level system, and for even stronger fields, the effect of stirring is observed for the first time in four-wave mixing. In addition, a new extra resonance appears which is induced by the saturating field. This field-induced resonance is the new member in the family of extra resonances (pressure induced, or stochastic fluctuation induced), and it should be observed whenever saturating fields interact with a multilevel atomic or molecular system.

Physical Review A•Mar 1, 1987•29 citations

Validity of semiclassical treatment of optical nonlinearity

Hiroshi Ajiki

Semiclassical and cavity-QED treatments of optical nonlinearity are compared with each other for a two-level system embedded in a cavity. The semiclassical treatment leads to qualitative incorrectness even if applied field is coherent.

•Jan 18, 2006•0 citations

Semiclassical representation method in statistical physics of interacting molecules

Eugeni P. Gordov, Gennady A. Koganov, Alexander M. Khazanov

Physica A Statistical Mechanics and its Applications•Sep 1, 1984•3 citations

Semiclassical Methods for Many-Body Systems

Brian R. Landry

•Jan 1, 2010•0 citations

Parallel three-wave interaction

François Henri Julien, Jean–Michel Lourtioz, Thomas A. DeTemple

A semiclassical density matrix treatment is developed for the parallel near-resonant interaction of three waves in a four-level atomic or molecular system. Explicit solutions are developed and contain implicit AC Stark-shift and splitting information. The role of splitting and AC Stark-shifts is discussed for a system of two competing emitted waves starting from a common optically pumped level; a situation encountered in many optically pumped lasers. Application of the results to a Raman-Raman competition situation in ammonia is illustrated.

Journal de physique•Jan 1, 1986•2 citations
A nonperturbative semiclassical theory is presented for the treatment of four-wave mixing (FWM) in a four-level system. This treatment is based on a transformation to a generalized rotating frame followed by a numerical diagonalization of the resulting time-independent Hamiltonian. For strong fields, all resonant frequencies are shifted from the atomic (molecular) frequencies. Lines are split up in a way similar to the ac Stark effect for a two-level system, and for even stronger fields, the effect of stirring is observed for the first time in four-wave mixing. In addition, a new extra resonance appears which is induced by the saturating field. This field-induced resonance is the new member in the family of extra resonances (pressure induced, or stochastic fluctuation induced), and it should be observed whenever saturating fields interact with a multilevel atomic or molecular system.
A semiclassical density matrix treatment is developed for the parallel near-resonant interaction of three waves in a four-level atomic or molecular system. Explicit solutions are developed and contain implicit AC Stark-shift and splitting information. The role of splitting and AC Stark-shifts is discussed for a system of two competing emitted waves starting from a common optically pumped level; a situation encountered in many optically pumped lasers. Application of the results to a Raman-Raman competition situation in ammonia is illustrated.