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

Physical Review A

Controlled excitation of selected regions inside dielectric media

Jennifer R. Csesznegi, Brian K. Clark, R. Grobe

Published Jun 1, 1998• 10 citations
Publisher

Abstract

We propose an optical scheme to control the degree of excitation of spatially localized regions inside an absorbing three-level medium using two suitably delayed laser pulses. Only selected localized regions inside the medium are changed by the pulses, the remaining medium remains unchanged in its ground state. We present an approximate but analytical theory of the coupled Liouville and Maxwell equations and propose an experimental verification of this control excitation scheme for potassium vapor.

DOI
10.1103/physreva.57.4860

Related papers

Recall and Creation of Spatial Excitation Distributions in Dielectric Media

Jennifer R. Csesznegi, R. Grobe

We present an analytical theory for the optical properties of a novel three-level medium for which the degree of its initial excitation is a function of the position. The spatial distribution of the excitation can be imaged on the temporal profile of an electromagnetic signal that is created inside the medium when traversed by a cw-laser field. We propose an experimental scheme to generate arbitrary spatial excitations.

Physical Review Letters•Oct 27, 1997•31 citations

Adiabatic Dynamical Control Physics of Dielectric Media

R. Grobe

We summarize recent developments in the area of the coherent propagation of laser pulses through dielectric media.We will show that the principle of dynamical adiabaticity opens new avenues to control the non-perturbative .and resonant interaction between two laser pulses and a three-level medium.Examples include the formation of stable wave forms that can travel through optical dielectric media in a loss-free manner with arbitrary pulse shapes, novel possibilities to store optical information in dielectric media in the form of spatially dependent excitations and techniques to exploit this information to control laser pulse envelopes.

Acta Physica Polonica A•Jan 1, 1998•3 citations

Ultrashort pulse control of space-dependent excitations in a three-level system

Yu. V. Loiko, Carles Serrat, Ramon A. Vilaseca +3 more

Coherent control of regions with spatial excitation of populations and coherence between two lower states in three-level $\ensuremath{\Lambda}$-type quantum systems mediated by the self-induced transparency (SIT) phenomenon is theoretically investigated with one- and two-color ultrashort pulses and with pulse sequences beyond the slowly varying envelope (SVEA) and rotating wave (RWA) approximations. The effects of different parameters characterizing the pulses and the medium on the location as well as the width of such excited regions have been studied numerically by means of the finite-difference time-domain (FDTD) method. It has been determined that with a scheme of two-pulse excitation one can effectively control the position at which the region is written and its width. In particular, the position of the excited region can be controlled by the area of the pulses. We find that the maximum value of the population transferred to the lower excited state depends on the detuning of the pulses with respect to the one-photon resonances, and that both position and width of the region also depend on the temporal duration of the pulses. We show how after the excited region is written, its position can be shifted by additional pulses. On the basis of numerical results, scaling laws are formulated for the reported phenomena. With such control, the width of the region excited inside the medium can be reduced to the order of the wavelength of the light.

Physical Review A•Feb 1, 2007•11 citations

Propagation of laser pulses under conditions of adiabatic population transfer

Vasily G. Arkhipkin, Д. В. Манушкин, V. P. Timofeev

A medium of three-level absorbing atoms is considered under conditions of adiabatic population transfer. A study is made of the characteristics of spatial propagation of two delayed (relative to one another) Gaussian pulses. It is shown that selective excitation of a two-photon resonant state with a near-unity probability is conserved over the length of a medium, which is considerably greater than the absorption length of a weak probe pulse in the absence of the second field.

Quantum Electronics•Dec 31, 1998•1 citation

Efficient selective optical excitation for isotope separation, using short laser pulses

Jean‐Claude Diels

Propagation of short ($\ensuremath{\lesssim}{T}_{2}$, where ${T}_{2}$ is the phase relaxation time) light pulses through absorbing media consisting of two ensembles of two-level systems of slightly different transition frequency is considered here. It is shown that one group of absorbers can be totally excited (inverted) while the other is returned to ground state. The effect of inhomogeneous broadening is illustrated by examples of propagation (numerical simulation) of properly shaped pulses through media having a linewidth equal to 1/5 of the frequency separation between the two transitions. The initial proportion of the two-level mixture is: 5% of the element to be excited, 95% of the element to be kept in ground state. The selective excitation capabilities of a Gaussian pulse and a zero-area pulse are compared.

Physical Review A•Apr 1, 1976•21 citations

Efficient selective excitation in optically thick extensive media by adiabatic population transfer

Vasily G. Arkhipkin, Д. В. Манушкин, V. P. Timofeev +1 more

In this work, the feature of spatio-temporal evolution of tow partially overlapped short pulses of counterintuitive sequence in a medium of three-level absorbing atoms in conditions of adiabatic transfer of population are investigated. The analytic solution is constructed. It is shown, that selective excitation of two-photon resonant state with a near-unity probability is conserved on the length of medium, which is considerably greater than the absorption length of a weak probe pulse in the absence of a coupling pulse at the adjacent transition.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE•Jan 11, 2000•0 citations
We propose an optical scheme to control the degree of excitation of spatially localized regions inside an absorbing three-level medium using two suitably delayed laser pulses. Only selected localized regions inside the medium are changed by the pulses, the remaining medium remains unchanged in its ground state. We present an approximate but analytical theory of the coupled Liouville and Maxwell equations and propose an experimental verification of this control excitation scheme for potassium vapor.
We summarize recent developments in the area of the coherent propagation of laser pulses through dielectric media.We will show that the principle of dynamical adiabaticity opens new avenues to control the non-perturbative .and resonant interaction between two laser pulses and a three-level medium.Examples include the formation of stable wave forms that can travel through optical dielectric media in a loss-free manner with arbitrary pulse shapes, novel possibilities to store optical information in dielectric media in the form of spatially dependent excitations and techniques to exploit this information to control laser pulse envelopes.
Coherent control of regions with spatial excitation of populations and coherence between two lower states in three-level $\ensuremath{\Lambda}$-type quantum systems mediated by the self-induced transparency (SIT) phenomenon is theoretically investigated with one- and two-color ultrashort pulses and with pulse sequences beyond the slowly varying envelope (SVEA) and rotating wave (RWA) approximations. The effects of different parameters characterizing the pulses and the medium on the location as well as the width of such excited regions have been studied numerically by means of the finite-difference time-domain (FDTD) method. It has been determined that with a scheme of two-pulse excitation one can effectively control the position at which the region is written and its width. In particular, the position of the excited region can be controlled by the area of the pulses. We find that the maximum value of the population transferred to the lower excited state depends on the detuning of the pulses with respect to the one-photon resonances, and that both position and width of the region also depend on the temporal duration of the pulses. We show how after the excited region is written, its position can be shifted by additional pulses. On the basis of numerical results, scaling laws are formulated for the reported phenomena. With such control, the width of the region excited inside the medium can be reduced to the order of the wavelength of the light.
Propagation of short ($\ensuremath{\lesssim}{T}_{2}$, where T2{T}_{2}T2​ is the phase relaxation time) light pulses through absorbing media consisting of two ensembles of two-level systems of slightly different transition frequency is considered here. It is shown that one group of absorbers can be totally excited (inverted) while the other is returned to ground state. The effect of inhomogeneous broadening is illustrated by examples of propagation (numerical simulation) of properly shaped pulses through media having a linewidth equal to 1/5 of the frequency separation between the two transitions. The initial proportion of the two-level mixture is: 5% of the element to be excited, 95% of the element to be kept in ground state. The selective excitation capabilities of a Gaussian pulse and a zero-area pulse are compared.
In this work, the feature of spatio-temporal evolution of tow partially overlapped short pulses of counterintuitive sequence in a medium of three-level absorbing atoms in conditions of adiabatic transfer of population are investigated. The analytic solution is constructed. It is shown, that selective excitation of two-photon resonant state with a near-unity probability is conserved on the length of medium, which is considerably greater than the absorption length of a weak probe pulse in the absence of a coupling pulse at the adjacent transition.