Spiky structure of coherent emission from optically thick media

Башаров, А. М.; Grigoryan, G. G.; Znamenskiy, N. V.; Manykin, E. A.; Orlov, Yu. V.; Shashkov, A. Yu.; Yukina, T. G.

doi:10.1134/s1063776106020026

Cited by 9 publications

(5 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A similar superradiation regime is well known in optics and is caused by the nonmonotonic decay of the excited state of continuous media [63]. However, in the case under study for Γ ε = 0 and ∆ ε = 0, the effect is caused by modulation instabilities in the process of QDs excitons decay resulting in the appearance of Rabi oscillations (see the upper inset in Fig.…”

Section: Features Of the Triggered Regime Of A Waveguide Spasermentioning

confidence: 93%

Formation of plasmon pulses in the cooperative decay of excitons of quantum dots near a metal surface

Shesterikov

Gubin

Gladush

et al. 2017

J. Exp. Theor. Phys.

View full text Add to dashboard Cite

The formation of pulses of surface electromagnetic waves in a metal/dielectric interface is considered in the process of cooperative decay of excitons of quantum dots distributed near a metal surface in a dielectric layer. It is shown that the efficiency of exciton energy transfer to excited plasmons can be increased by selecting the dielectric material with specified values of the complex permittivity. It is found that in the mean field approximation the semiclassical model of formation of plasmon pulses in the system under study is reduced to the pendulum equation with the additional term of nonlinear losses.

show abstract

Section: Features Of the Triggered Regime Of A Waveguide Spasermentioning

confidence: 93%

Formation of plasmon pulses in the cooperative decay of excitons of quantum dots near a metal surface

Shesterikov

Gubin

Gladush

et al. 2017

J. Exp. Theor. Phys.

View full text Add to dashboard Cite

show abstract

“…Here, Δ = (ω 31 -)/Ω = (ω 32 -)/Ω is the dimensionless detuning of optical transition frequencies from their mean values, δ = ω 21 /Ω is the dimensionless frequency of doublet splitting, and τ res = ΩT res ( ) is the dimensionless lifetime of the field in the cavity. This constant effectively takes into account the cavity losses in the mean field approximation [56].…”

Section: P N D G D G Dmentioning

confidence: 99%

“…The coherence time of Zeeman or hyperfine states of the ground level may reach 6 hours [71]. The above extraordinary properties render the crystals doped with rare-earth ions to be very prospective systems from the viewpoint of solid-state optical memory and fully optical data processing [72], as well as for the observation of coherent optical effects (in particular, superradiance) [14,15,56,[73][74][75][76][77][78][79].…”

Section: Promising Systemsmentioning

confidence: 99%

Cooperative emission from an ensemble of three-level Λ radiators in a cavity: An insight from the viewpoint of dynamics of nonlinear systems

Рыжов

Vasil'ev

Kosova

et al. 2017

J. Exp. Theor. Phys.

View full text Add to dashboard Cite

Cooperative radiation emitted by an ensemble of three-level optical systems with a doublet in the ground state (Λ scheme), which is placed into a cyclic cavity, is studied theoretically. In contrast to the twolevel model of emitters, this process with such a configuration of operating transitions may occur without population inversion in the whole, if the doublet is prepared at the initial instant in a superposition (coherent) state. In the ideal case of a Hamilton system, in which the cavity losses and relaxation in the radiator ensemble are disregarded, the conservation laws are derived, which allow a substantial reduction of the dimension of the phase space of the model (ℝ 11 → ℝ 5 ) and the application of methods of dynamics of nonlinear systems for analyzing the three-level superradiance under these conditions. The possibility of different (both quasiperiodic and chaotic) scenarios of the three-level superradiance is demonstrated on the basis of Poincaré's mappings. Global bifurcation of the system upon a transition from the conventional superradiance regime to inversionless one is revealed. The effects of cavity losses, as well as homogeneous and inhomogeneous broadening in the system of radiators on the regularities found are also discussed.

show abstract

“…The initial coherent state of the doublet can be created by a short low-frequency -pulse [22][23][24][25][26][27][31][32][33][34][35][36]. Systems of this kind can be realized in crystals, e.g., in a matrix doped with praseodymium ions [27][28][29][30], the ground state of which has a fine structure. It should be noted that, in systems of two-level emitters, it is frequently difficult to reach population inversion.…”

Section: Introductionmentioning

confidence: 99%

Inversionless Superradiance and the Duffing Model

Рыжов¹,

Vasil’ev²,

Kosova³

et al. 2016

Opt. Spectrosc.

View full text Add to dashboard Cite

Superradiance of three-level optical systems with a doublet in the ground state ( -scheme) placed in a high-Q cavity is studied theoretically. The conservation laws are obtained, which allow to considerably reduce the dimension of the phase space of the examined model (). In the particular case of a degenerate doublet, a mapping that makes it possible to reduce the problem of the three-level superradiance to a Duffing oscillator model ( ) is found. It is shown the possibility to initiate the superradiance generation even in the case when the population of the upper level is smaller than the total population of the lower doublet, i.e., without population inversion on the whole.

show abstract

Spiky structure of coherent emission from optically thick media

Cited by 9 publications

References 27 publications

Formation of plasmon pulses in the cooperative decay of excitons of quantum dots near a metal surface

Formation of plasmon pulses in the cooperative decay of excitons of quantum dots near a metal surface

Cooperative emission from an ensemble of three-level Λ radiators in a cavity: An insight from the viewpoint of dynamics of nonlinear systems

Inversionless Superradiance and the Duffing Model

Contact Info

Product

Resources

About