Coupled semiconductor microcavities

Stanley, R. P.; Houdré, R.; Oesterle, U.; Ilegems, M.; Weisbuch, C.

doi:10.1063/1.112803

Cited by 150 publications

(76 citation statements)

References 6 publications

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“…Coupled microcavities introduce additional degrees of freedom, both for materials and the cavity interactions, and have attracted increasing attention. Quantum well based coupled inorganic microcavites (MCs) have been well studied for theory and optical devices [4][5][6][7][8][9][10][11] . Cavity polariton-induced splitting of excitonic states and optical reflection asymmetry were reported by Armitage et al in quantum well based coupled inorganic MCs 6,7 .…”

Section: Introductionmentioning

confidence: 99%

Coupling of exciton-polaritons inlow−Qcoupled microcavities beyond the rotating wave approximation

et al. 2015

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We have demonstrated coupling between a pair of ultrastrong light-matter coupled microcavities composed of neat glassy organic dye films between metallic (silver) mirrors at room temperature. Based upon our modified coupled oscillator model, we have observed that the degeneracy between the Rabi splittings associated with the symmetric and antisymmetric cavity modes is broken by the higher-order anti-resonant terms in the Hamiltonian associated with the breakdown of the rotating wave approximation in the ultrastrong coupling regime. These results are in quantitative agreement with both experiment and transfer matrix modeling. The component cavities are characterized by Q factors around 12 and display a large vacuum Rabi splitting around 1.12 eV between the upper and lower polariton branches, which is about 52% of the excited state energy, thus indicating ultrastrong coupling in each individual cavity. This large splitting is due to the large oscillator strength of the neat dye glass. We have also observed large polariton-induced incidence-side asymmetry in reflection spectra in a coupled cavity pair with one cavity having no exciton.

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Section: Introductionmentioning

confidence: 99%

Coupling of exciton-polaritons inlow−Qcoupled microcavities beyond the rotating wave approximation

et al. 2015

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“…42.70.Qs; 42.60.Da;78.66.Jg Ability to control spontaneous emission is expected to have practical importance in certain commercial applications. Thus, in the past decade, photonic band gap materials were proposed for alteration (inhibition and enhancement) of the spontaneous emission from atoms [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. …”

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confidence: 99%

Strong enhancement of spontaneous emission in amorphous-silicon-nitride photonic crystal based coupled-microcavity structures

et al. 2001

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Abstract. We investigated photoluminescence (PL) from one-dimensional photonic band gap structures. The photonic crystals, a Fabry-Perot (FP) resonator and a coupledmicrocavity (CMC) structure, were fabricated by using alternating hydrogenated amorphous-silicon-nitride and hydrogenated amorphous-silicon-oxide layers. It was observed that these structures strongly modify the PL spectra from optically active amorphous-silicon-nitride thin films. Narrow-band and wide-band PL spectra were achieved in the FP microcavity and the CMC structure, respectively. The angle dependence of PL peak of the FP resonator was also investigated. We also observed that the spontaneous emission increased drastically at the coupled-cavity band edge of the CMC structure due to extremely low group velocity and long photon lifetime. The measurements agree well with the transfer-matrix method results and the prediction of the tight-binding approximation. 42.70.Qs; 42.60.Da;78.66.Jg Ability to control spontaneous emission is expected to have practical importance in certain commercial applications. Thus, in the past decade, photonic band gap materials were proposed for alteration (inhibition and enhancement) of the spontaneous emission from atoms [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. PACS:Recently, we reported a new type of propagation mechanism in which photons move along the localized coupledcavity modes [15,16]. Moreover, it was observed that the group velocity tends to zero and photon lifetime increases drastically at the coupled-cavity band edges [17]. In this paper, we experimentally demonstrate the modification of spontaneous emission from the hydrogenated amorphous-siliconnitride active layers in a Fabry-Perot (FP) resonator and a coupled-microcavity (CMC) structure.Since the density of electromagnetic modes (ω) is modified by the surrounding environments, the spontaneous emission from atoms can be controlled by placing the atoms inside * Corresponding author. (Fax: +90-312/266-4579, E-mail: bayindir@fen.bilkent.edu.tr) cavities. The spontaneous emission rate is directly proportional to the photon density of modes via Fermi's golden rule:. Thus, it is expected that spontaneous emission from a CMC structure can be enhanced by a low group velocity.Our structures were composed of alternating hydrogenated amorphous-silicon-nitride (Si 3 N 4 ) and hydrogenated amorphous-silicon-oxide (SiO 2 ) multilayers [18]. The SiO 2 and Si 3 N 4 layers were deposited on glass and silicon substrates by plasma-enhanced chemical vapour deposition (PECVD) at 250• C. Nitrogen (N 2 ) balanced 2% silane (SiH 4 ), pure ammonia (NH 3 ) and nitrous oxide (N 2 O) were used as the silicon, nitride and oxide sources, respectively. The refractive indices and thicknesses of layers were n SiO 2 = 1.46, n

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“…Composite resonators can be utilized to control spectral and temporal properties within the laser; previous studies of coupled cavity vertical cavity lasers have employed photopumped structures [2], [3]. We report the first electrically injected coupled resonator vertical-cavity laser (CRVCL) diode and demonstrate some of the novel characteristics arising from the cavity coupling, including methods for external modulation of the laser.…”

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confidence: 99%