Directed Beam of Excitons Produced by Stimulated Scattering

Mysyrowicz, A.; Benson, Eric E.; Fortin, E.

doi:10.1103/physrevlett.77.896

Cited by 111 publications

(78 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…C. 19 where f p S and f p T are the average photon populations due to the source and black-body radiation respectively, and C q ′ ĉ q ′ |t , ĉ † q ′ |t , σ q ′ , σ * q ′ , t are the contributions from amplitudes and pairs to the evolution. In compact form, as in Eq.…”

Section: Appendix B the Nonequilibrium Statistical Operatormentioning

confidence: 99%

See 1 more Smart Citation

Dynamics of a Bose-Einstein condensate of excited magnons

2013

View full text Add to dashboard Cite

Abstract. The emergence of a non-equilibrium Bose-Einstein-like condensation of magnons in rf-pumped magnetic thin films has recently been experimentally observed. We present here a complete theoretical description of the non-equilibrium processes involved. It it demonstrated that the phenomenon is another example of the presence of a Bose-Einstein-like condensation in nonequilibrium many-boson systems embedded in a thermal bath, better referred-to as Fröhlich-Bose-Einstein condensation. The complex behavior emerges after a threshold of the exciting intensity is attained. It is inhibited at higher intensities when the magnon-magnon interaction drives the magnons to internal thermalization. The observed behavior of the relaxation to equilibrium after the end of the pumping pulse is also accounted for and the different processes fully described.

show abstract

Section: Appendix B the Nonequilibrium Statistical Operatormentioning

confidence: 99%

“…A third one is that of excitons (electron-hole pairs in semiconductors) interacting with the lattice vibrations and under the action of rfelectromagnetic fields; on a STI aspect, the phenomenon has been considered for allowing a possible exciton-laser in the THz frequency range called "Excitoner" [19,20].…”

mentioning

confidence: 99%

Dynamics of a Bose-Einstein condensate of excited magnons

2013

View full text Add to dashboard Cite

show abstract

“…For example, there were early claims in CuCl [204][205][206], Cu 2 O [207][208][209], and exciton-polaritons in microcavities [210]. These were followed by much debate and many retractions [211][212][213].…”

Section: To Bec or Not To Bec?mentioning

confidence: 99%

Spatially indirect excitons in coupled quantum wells

Lai¹

2004

View full text Add to dashboard Cite

show abstract

“…Bose-Einstein condensation (BEC) is a fascinating topic attracting new interest, due to recent experimental observation for BEC of atomic ensembles [1,2] and evidence for BEC of excitons in semiconductors [3,4,5,6]. In spite of the many similarities between bosonic atoms and excitons in semiconductors with large binding energy, the BEC of the latter has the interesting specific feature that the order parameter of the excitonic condensate is identical to its optical polarization.…”

Section: Introductionmentioning

confidence: 99%

Anomalous dephasing of bosonic excitons interacting with phonons in the vicinity of the Bose-Einstein condensation

et al. 2000

View full text Add to dashboard Cite

Abstract. The dephasing and relaxation kinetics of bosonic excitons interacting with a thermal bath of acoustic phonons is studied after coherent pulse excitation. The kinetics of the induced excitonic polarization is calculated within Markovian equations both for subcritical and supercritical excitation with respect to a Bose-Einstein condensation (BEC). For excited densities n below the critical density nc, an exponential polarization decay is obtained, which is characterized by a dephasing rate Γ = 1 T 2. This dephasing rate due to phonon scattering shows a pronounced exciton-density dependence in the vicinity of the phase transition. It is well described by the power law Γ ∝ (n − nc) 2 that can be understood by linearization of the equations around the equilibrium solution. Above the critical density we get a non-exponential relaxation to the final condensate value

show abstract

Directed Beam of Excitons Produced by Stimulated Scattering

Abstract: International audienceAmplification of a directed beam of excitons by stimulated scattering is observed in Cu2O at 2 K. It indicates that an excitoner, the radiationless excitonic counterpart of a laser, can be realized in semiconductors

Cited by 111 publications

References 9 publications

Dynamics of a Bose-Einstein condensate of excited magnons

Dynamics of a Bose-Einstein condensate of excited magnons

Spatially indirect excitons in coupled quantum wells

Anomalous dephasing of bosonic excitons interacting with phonons in the vicinity of the Bose-Einstein condensation

Contact Info

Product

Resources

About