Superfluidity of bose condensed dipole-active excitons and photons and the phenomenon of selfinduced transparency

Moskalenko, S. A.; Rotaru, A. H.; Khadzhi, P. I.

doi:10.1016/0030-4018(77)90383-2

Cited by 8 publications

(5 citation statements)

References 2 publications

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“…Solitary waves (solitons) formed of interacting quasiparticles in condensed media have been widely investigated. They have been predicted and studied for vibron [1][2][3][4][5], exciton [6][7][8], polariton [9][10][11][12] and magnon [13][14][15] excitations. Almost all investigations to date refer to solitons associated with non-degenerate excitations such as those with polarization normal to the optical axis in uniaxial gyrotropic crystals.…”

Section: Introductionmentioning

confidence: 99%

Soliton interactions in gyrotropic crystals

Stoychev¹,

Primatarowa²,

Kamburova³

2000

J. Phys.: Condens. Matter

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The interactions of conjugate circularly polarized vibrational solitons in gyrotropic molecular crystals are investigated. Their dynamics is governed by a system of coupled non-linear Schrödinger equations which are solved analytically and numerically. Depending on the initial conditions and the material parameters, different evolutionary patterns are obtained corresponding to unbound or bound one-and two-soliton solutions. For structures with C 4 and D 4 symmetries and weak gyrotropic properties, an intensive energy exchange between the modes takes place and under certain conditions the fast mode becomes unstable.

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Section: Introductionmentioning

confidence: 99%

Soliton interactions in gyrotropic crystals

Stoychev¹,

Primatarowa²,

Kamburova³

2000

J. Phys.: Condens. Matter

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“…The formation and propagation of coherent exciton-photon pulses with constant shape (polariton solitons), considered as self-induced transparency of excitons, were studied in the early 1970s [1,2]. Since then, extensive investigations of the properties of polariton solitons have been carried out [3][4][5][6][7][8]. Spatial dispersion effects have been studied in [4][5][6]9].…”

mentioning

confidence: 99%

“…Since then, extensive investigations of the properties of polariton solitons have been carried out [3][4][5][6][7][8]. Spatial dispersion effects have been studied in [4][5][6]9]. The formation of polariton solitons on crystal surfaces [10] and as a result of complicated interactions [11][12][13][14][15] has been considered.…”

mentioning

confidence: 99%

Dispersion effects in exciton-polariton solitons

Stoychev

Primatarowa

2001

J. Phys.: Condens. Matter

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“…The polarization density of the material P is expressed by Here A(6) and ~ ( 6 ) are real functions of 5. It is easy to show that for IzI + 00, i.e.…”

mentioning

confidence: 99%

“…where V is the crystal volume connected with the full number of crystal atoms N by the expression V = Nu,. The polarization density of the material P is expressed by Here A(6) and ~ ( 6 ) are real functions of 5.…”

mentioning

confidence: 99%

The polariton soliton formation due to the effect of the dipole momentum saturation

Shibarshina¹,

Moskalenko²,

Khadzhi³

1983

Physica Status Solidi (b)

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The energy flux density of the incident light upon the crystal surface and the form of the wave packet envelope with frequencies lying in the exciton range of the spectrum, are determined. They must be of such a nature that after the penetration into the semi-infinite crystal, the laser pulse can travel at once as a solitary wave without any transient stage. I n the case considered the effect of the dipole momentum saturation (DMS) for the transition from the ground state of tho crystal t o that of the exciton is the main nonlinearity. The Maxwell-Bresnel boundary conditions are used on the interface between the vacuum and the crystal.Die EnergiefluIjdichte des einfallenden Lichtes auf die Kristalloberfliiche und die Form der Einhiillenden des Wellenpakets bei Frequenzen im Exzitonenbereich des Xpektrums werden bestimmt. Sie miissen von solcher Art sein, daIj nach dem Eintritt in den halbunendlichen Kristall, der Laserimpuls im ganzen als Solitarwelle ohne jeden Ubergangszustand laufen kann. I m vorliegenden Fall ergibt der EinfluIj der Dipol-Impulssattigung (DMX) fur den ubergang vom Grundzustand des Kristalls zum Exziton die Hauptnichtlinearitat. Die Maxwell-Fresnel-Randbedingungen werden an der Grenzflache ewischen Vakuum und Kristall benutzt.

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Superfluidity of bose condensed dipole-active excitons and photons and the phenomenon of selfinduced transparency

Cited by 8 publications

References 2 publications

Soliton interactions in gyrotropic crystals

Soliton interactions in gyrotropic crystals

Dispersion effects in exciton-polariton solitons

The polariton soliton formation due to the effect of the dipole momentum saturation

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