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

Quantum Electronics

Superradiance of two-component quasiresonant media

Anatolii V Andreev, P. V. Polevoy

Published Jul 31, 1996• 0 citations
Publisher

Abstract

An investigation is made of the dynamics of the superradiance of two-component quasiresonant media with similar frequencies of superradiant transitions. It is shown that variation of the detuning of the frequencies of the components can increase the peak intensity of a superradiance pulse and simultaneously reduce its temporal width. The range of the detuning of the frequencies of the components ensuring generation of the strongest and shortest superradiance pulse is determined. It is demonstrated that superradiance pulses emitted by two-component quasiresonant media may be delayed by a considerable time, which is significantly longer than the temporal width of the superradiance pulse itself.

DOI
10.1070/qe1996v026n07abeh000741

Related papers

Generation of ultrashort pulses by two-component superradiance media

Anatolii V Andreev, P. V. Polevoy

A method is proposed for substantially reducing the length of superradiance pulses and increasing their intensity. The idea is to introduce an additional coherent resonant component, with a higher Rabi frequency, in a superradiance medium. The superradiance intensity of a two-component medium of this sort can be substantially higher than that of either component individually. The pump pulse can be several orders of magnitude longer than the generation pulse. The parameters of the generation pulse are controlled by varying the length and composition of the active medium.

Quantum Electronics•Oct 31, 1993•0 citations

Superradiance of two-component spatial inhomogeneous media

Andrey Andreev, Sergei Sheetlin

The two—component superradiative medium consists of two species of atoms with the different dipole moments of the quasi-resonant transitions. The atoms with the smaller dipole moment are initially in the excited state, while е atoms of the second type are initially in the ground state. In the initial stage of the superradiance dynamics the first component is amplifying one, the second component is resonantly absorbing. By varying the concentration of the resonantly absorbing atoms it is possible to increase the intensity of superradiance in the few order of magnitude with respect to the monocomponent medium of the amplifying atoms alone. Here we show that the variation in the distribution of the component densities enables us the additional possibilities in the control of the superradiance pulse parameters. The additional increase in the order of magnitude for the peak pulse intensity is obtained at the optimal distribution. The nature of such variation in the pulse profile and its intensity is due to the opportunity for the effective spatial mode selection in the spatial inhomogeneous media. We discuss the algorithms of е numerical solution and show that the enhanced accuracy methods can be developed in this case.

Izvestiya VUZ Applied Nonlinear Dynamics•Jan 1, 1997•0 citations

Superradiance of two-component composite media

Anatolii V Andreev, P. V. Polevoy

An investigation is reported of the superradiance of a system composed of two superradiant media. It is shown that the intensity of the superradiance pulses can be increased. A description is given of a system in which identical media are used as both fast and slow components of a two-component composite medium. New opportunities for control of the superradiance pulse parameters are discussed.

Quantum Electronics•Aug 31, 1996•1 citation

Superradiance of two-component media

A V Andreev, P V Polevoy

The superradiance (SR) phenomenon is considered for the case of a medium consisting of two resonant components. It is shown that the dynamics of emission in this case differs essentially from that for a monocomponent medium. The use of a two-component medium results in a substantial weakness in the requirements for duration of the pumping pulse. The peak pulse intensity of superradiance for the case of a two-component medium can exceed that for each of the components separately. By varying the active medium length and concentration of components we can control the spatiotemporal dynamics of emission. This enables us to transform the broadened pumping pulse of a lower intensity into the ultrashort high intensity pulse of SR.

Quantum Optics Journal of the European Optical Society Part B•Apr 1, 1994•8 citations

Influence of local-field effects on the dynamics of superradiance by a dense medium

Anatoli V. Andreev, P. V. Polevoy, Charles M. Bowden +1 more

The theory of superradiance by an ensemble of two-level atoms embedded in a dielectric host is developed. It is shown that the near dipole-dipole interaction of a dense collection of two-level atoms is enhanced by the presence of the host material, decreasing the pulse temporal width and increasing the peak pulse intensity of superradiative emission. The influence of the inversion-dependent detuning effect on the parameters of the emitted pulses is investigated.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE•Feb 25, 1999•0 citations

Influence of local-field effects on the dynamics of superradiance by a dense medium

А. В. Андреев, P. V. Polevoy, C. M. Bowden +1 more

The theory of superradiance by an ensemble of two-level atoms embedded in a dielectric host is developed. It is shown that the near dipole-dipole interaction of a dense collection of two-level atoms is enhanced by the presence of the host material, decreasing the pulse temporal width and increasing the peak pulse intensity of superradiative emission. The influence of the inversion-dependent detuning effect on the parameters of the emitted pulses is investigated.© (1999) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

•Jan 1, 1999•0 citations
An investigation is made of the dynamics of the superradiance of two-component quasiresonant media with similar frequencies of superradiant transitions. It is shown that variation of the detuning of the frequencies of the components can increase the peak intensity of a superradiance pulse and simultaneously reduce its temporal width. The range of the detuning of the frequencies of the components ensuring generation of the strongest and shortest superradiance pulse is determined. It is demonstrated that superradiance pulses emitted by two-component quasiresonant media may be delayed by a considerable time, which is significantly longer than the temporal width of the superradiance pulse itself.
A method is proposed for substantially reducing the length of superradiance pulses and increasing their intensity. The idea is to introduce an additional coherent resonant component, with a higher Rabi frequency, in a superradiance medium. The superradiance intensity of a two-component medium of this sort can be substantially higher than that of either component individually. The pump pulse can be several orders of magnitude longer than the generation pulse. The parameters of the generation pulse are controlled by varying the length and composition of the active medium.
The two—component superradiative medium consists of two species of atoms with the different dipole moments of the quasi-resonant transitions. The atoms with the smaller dipole moment are initially in the excited state, while е atoms of the second type are initially in the ground state. In the initial stage of the superradiance dynamics the first component is amplifying one, the second component is resonantly absorbing. By varying the concentration of the resonantly absorbing atoms it is possible to increase the intensity of superradiance in the few order of magnitude with respect to the monocomponent medium of the amplifying atoms alone. Here we show that the variation in the distribution of the component densities enables us the additional possibilities in the control of the superradiance pulse parameters. The additional increase in the order of magnitude for the peak pulse intensity is obtained at the optimal distribution. The nature of such variation in the pulse profile and its intensity is due to the opportunity for the effective spatial mode selection in the spatial inhomogeneous media. We discuss the algorithms of е numerical solution and show that the enhanced accuracy methods can be developed in this case.
The superradiance (SR) phenomenon is considered for the case of a medium consisting of two resonant components. It is shown that the dynamics of emission in this case differs essentially from that for a monocomponent medium. The use of a two-component medium results in a substantial weakness in the requirements for duration of the pumping pulse. The peak pulse intensity of superradiance for the case of a two-component medium can exceed that for each of the components separately. By varying the active medium length and concentration of components we can control the spatiotemporal dynamics of emission. This enables us to transform the broadened pumping pulse of a lower intensity into the ultrashort high intensity pulse of SR.
The theory of superradiance by an ensemble of two-level atoms embedded in a dielectric host is developed. It is shown that the near dipole-dipole interaction of a dense collection of two-level atoms is enhanced by the presence of the host material, decreasing the pulse temporal width and increasing the peak pulse intensity of superradiative emission. The influence of the inversion-dependent detuning effect on the parameters of the emitted pulses is investigated.© (1999) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.