Time-resolved spontaneous emission of excitons in a microcavity: Behavior of the individual exciton-photon mixed states

Sermage, B.; Long, Sam; Abram, I.; Marzin, J. Y.; Bloch, J.; Planel, R.; Thierry‐Mieg, V.

doi:10.1103/physrevb.53.16516

Cited by 113 publications

(57 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…23 In this region of reciprocal space, the QW excitons are weakly coupled with the continuum of free photon modes. The lifetime taken for excitons in this region has very little effect on the overall polariton dynamics.…”

Section: Numerical Simulation Of the Polariton Relaxation In The Smentioning

confidence: 99%

“…͑c͒ Outside the ''light cone,'' i.e., for k light Ͻk, ⌫ k ϭ1/ e is assumed, where e is the exciton ͑nonradiative͒ lifetime taken to be ϳ0.5 ns. 23 In this region, the exciton reservoir, scattering processes to lower k are needed in order for radiative recombination to occur. We calculate the polaritonacoustic phonon and polariton-polariton scattering rates following Tassone, 8,9 including scattering only within the lower-polariton branch.…”

Section: Numerical Simulation Of the Polariton Relaxation In The Smentioning

confidence: 99%

“…III A, the power densities quoted are estimated powers absorbed in the cavity. Assuming a typical exciton lifetime of 0.5 nsec, 23 the power density at which FIG. 8.…”

Section: Dispersion Curves At Low Power and Above Threshold The Tmentioning

confidence: 99%

See 2 more Smart Citations

Transition from strong to weak coupling and the onset of lasing in semiconductor microcavities

et al. 2002

View full text Add to dashboard Cite

Angular-dependent emission spectra are investigated in a strongly coupled InGaAs-GaAs-AlAs-based semiconductor microcavity as a function of excitation intensity and of detuning between the uncoupled exciton and photon modes. Under conditions of nonresonant excitation, it is shown that the onset of stimulated emission always occurs in the weak coupling regime. Angular-dependent studies show that the transition to weak coupling occurs when the linewidth of high k excitons becomes of the order of the normal mode splitting of the exciton-polariton coupled modes. We conclude that, under nonresonant excitation, ''polariton lasing,'' where stimulated polariton scattering followed by photon emission occurs in the strong coupling regime, is only likely to be achieved in systems with larger exciton binding energy than in GaAs-based structures or possibly also in GaAs microcavities containing excess concentrations of free electrons. The experimental results below threshold are found to be in good agreement with numerical solution of Boltzmann kinetic equations for the photoexcited polariton distribution.

show abstract

Section: Numerical Simulation Of the Polariton Relaxation In The Smentioning

confidence: 99%

Section: Numerical Simulation Of the Polariton Relaxation In The Smentioning

confidence: 99%

See 1 more Smart Citation

Transition from strong to weak coupling and the onset of lasing in semiconductor microcavities

et al. 2002

View full text Add to dashboard Cite

show abstract

“…As concerns the incident photon, 71 is proportional to the incident photon weight sin 2 φ while the polariton phonon matrix element is proportional to the incident exciton weight cost φ, because polaritons interact with phonons only through their exciton component. The cavity-polariton lifetime r" on the other hand, has been shown to increase only by a factor approximately 2 going from zero to maximum detuning [9]. Neglecting this latter small contribution, the resonant Raman scattering intensity can be hence simply approximated as Note that Δ is related to θ0 by where neff is the cavity effective refractive index.…”

Section: Cavity Polcriton Mediated Raman Scatteringmentioning

confidence: 99%

Raman Scattering Photonic and Polaritonic Resonances in Semiconductor Microcavities

Jusserand¹,

Fainstein²

1997

Acta Phys. Pol. A

View full text Add to dashboard Cite

show abstract

“…In the following, we refer to lower polaritons (LPs) and upper polaritons (UPs) as mixed modes. This cavity effect is expected to modify the dynamics of spontaneous emission [5][6][7]. In particular, the energy relaxation in the polariton system will be strongly modified compared to that of the uncoupled excitons.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of photoluminescence dynamics of cavity polaritons under nonresonant excitation

Liu¹,

Xu²,

Wang³

et al. 2001

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

Low-temperature time-resolved photoluminescence (PL) experiments have been performed on a semiconductor planar microcavity, which contains two sets of three In 0.13 Ga 0.87 As/GaAs quantum wells embedded in a 3λ/2 GaAs cavity. The spontaneous emission dynamics of both lower-and upper-branch polaritons is investigated as a function of exciton-cavity detuning under nonresonant optical excitation. It is found that the PL decay times of both branches are independent of cavity detuning while the PL rising kinetics of the lower-and upper-branch polaritons exhibits a significant difference. The rise time of the upper polarition branch shows a strong dependence on cavity detuning, while the rise time of the lower polarition branch is less sensitive to cavity detuning. Our results can be well understood in the framework of the theoretical prediction of Tassone et al.

show abstract

Time-resolved spontaneous emission of excitons in a microcavity: Behavior of the individual exciton-photon mixed states

Cited by 113 publications

References 30 publications

Transition from strong to weak coupling and the onset of lasing in semiconductor microcavities

Transition from strong to weak coupling and the onset of lasing in semiconductor microcavities

Raman Scattering Photonic and Polaritonic Resonances in Semiconductor Microcavities

Experimental investigation of photoluminescence dynamics of cavity polaritons under nonresonant excitation

Contact Info

Product

Resources

About