Conditions and features of the lasing in traps for the bose condensation of dipolar excitons

Kalinin, P. A.; Kocharovsky, Vl. V.

doi:10.1007/s11141-011-9293-5

Cited by 4 publications

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References 15 publications

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“…That threshold may exceed the first one by many times and is very sensitive even to a weak inhomogeneous broadening, so that the difference of the two thresholds becomes small at 1/T * 2 1/T 2 . The papers [23,24] contain analytical studies of the influence of homogeneous broadening on the first threshold of a laser with Bose-Einstein distribution of active centers and on the second threshold of a single mode class D laser within a model of splitting of a spectral line with homogeneous broadening into two similar lines shifted symmetrically with respect to the frequency of a partial mode of a laser cavity. That papers contain also a numerical analysis of the single, double and multi-mode non-stationary generation of the class D laser with homogeneous and weak inhomogeneous broadening.…”

Section: Homogeneous Broadening Superradiant Lasers On Polariton Modmentioning

confidence: 99%

“…High-quality polarization oscillations of active centers, which have different frequencies in the general case of inhomogeneous broadening of a spectral line, increase greatly the number of dynamical degrees of freedom under the condition (4.1) [6,23,28]. As a results, an outgoing radiation may be multi-periodic or quasichaotic and may contain well-correlated or weakly connected spectral components.…”

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Superradiant Lasing and Collective Dynamics of Active Centers with Polarization Lifetime Exceeding Photon Lifetime

Kocharovskaya¹,

Kocharovsky²

2015

Springer Series in Optical Sciences

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Analytic theory, numerical simulation, and qualitative analysis of the threshold conditions, nonlinear dynamics, and spectral features of the superradiant emission and cooperative radiative behavior of a dense many-particle system in a low-Q Fabry-Perot cavity with distributed feedback of counter-propagating electromagnetic waves are given. Various systems with extreme spatial-spectral density of radiating particles as active media of superradiant lasers are discussed, including those with almost homogeneous broadening as well as strongly inhomogeneous broadening of a spectral line. In the case of experimental verification, the phenomenon of CW superradiant lasing will be promising in the information optoelectronics and condensed matter physics, in particular, for managing novel oscillators with complicated dynamical spectra and for creating unprecedented diagnostics of quantum coherent many-particle effects. Introduction. What is a class D laser?Recent experiments on pulsed superfluorescence and prospects of CW superradiant lasing in various active media (see Sect. 4.2) require a systematic analysis of the threshold conditions and the non-stationary regimes of a cooperative emission based on mode superradiance (SR). This emission takes place in the case when a photon lifetime is much shorter than a polarization lifetime of an active center. The latter situation means a low-Q cavity and a dense active medium and corresponds to the so-called class D lasers [6,28], which differ in many respects from the standard lasers of A, B, and C classes introduced by Arecchi and Harrison [3].The key difference is related to the collective dynamics of the active centers which totally alters the dynamical spectra of their population inversion and cavity Vl. V. Kocharovsky ( ) · V. V. Kocharovsky · E. R. Kocharovskaya IAP RAS, 46, Ulyanov str.,

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Section: Homogeneous Broadening Superradiant Lasers On Polariton Modmentioning

confidence: 99%

mentioning

confidence: 99%