Optical losses in plasma-etched AlGaAs microresonators using reflection spectroscopy

Rivera, T.; Debray, J.P.; Gérard, Jean‐Michel; Legrand, Bernard; Manin-Ferlazzo, L.; Oudar, Jean‐Louis

doi:10.1063/1.123407

Cited by 59 publications

(49 citation statements)

References 10 publications

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“…[3][4][5][6] In addition, investigations on submicron-diameter micropillars have shown an oscillatory variation in the Q factor in agreement with theoretical predictions. [7][8][9] In this submicron-diameter regime the oscillations of the Q factor are related to the existence of a propagating Bloch mode providing an efficient route of energy transfer between the dominant HE and EH modes of the microcavity.…”

supporting

confidence: 60%

Oscillatory variations in the Q factors of high quality micropillar cavities

et al. 2009

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supporting

confidence: 60%

Oscillatory variations in the Q factors of high quality micropillar cavities

et al. 2009

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“…2(d)] . These observations nicely reflect that emission from off-resonant QDs is suppressed in axial direction by the cavity's stopband and that lateral losses are of minor importance for large diameter micropillars [34]. The situation differs strongly for the micropillar with d c = 2.0 μm for which significant lateral losses lead to a pronounced contribution of the cavity mode also in lateral emission (c).…”

Section: A Diameter Dependence Of Lateral Emissionmentioning

confidence: 58%

Correlations between axial and lateral emission of coupled quantum dot–micropillar cavities

et al. 2015

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We report on optical studies of coupled quantum dot-micropillar cavities using a 90 • excitation-and-detection scheme. This specific configuration allows us to excite the micropillar structures either in the axial direction or in the lateral direction and to simultaneously detect emission from both directions. That enables us to reveal correlations between emission into the cavity mode and the leaky modes in the regime of cavity quantum electrodynamics. In particular, we can access and distinguish between axial cavity emission and lateral emission consisting of emission of quantum dots into the leaky modes and losses due to sidewall scattering, respectively. In the multiemitter regime, this technique provides direct access to the respective loss channels and reveals a strong increase of sidewall losses in the low-diameter regime below about 3.0 μm. Beyond that, in the single-emitter regime, we observe an anticorrelation between quantum dot emission coupled into the cavity mode and into the leaky modes which is controlled by light-matter interaction in the weak coupling regime. This anticorrelation is absent in the strong coupling regime due to the presence of entangled light-matter states. Moreover, excitation-power-dependent studies demonstrate that the intensity ratio between axial and lateral emission increases strongly above the lasing threshold due to enhanced directionality of emission into the lasing mode. In fact, theoretical studies confirm that this intensity ratio is an additional indicator of laser action in high-β microlasers for which the onset of lasing is difficult to identify by the input-output characteristics.

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“…|E(d)| is the electrical field of the fundamental mode at the sidewalls of the micropillar, whose profile is given by the Bessel function of the first kind J 0 [28]. The parameter ε is a parameter quantifying the etching quality.…”

Section: B Optimization Of the Cavitymentioning

confidence: 99%

Giant optical nonlinearity induced by a single two-level system interacting with a cavity in the Purcell regime

et al. 2007

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A two-level system that is coupled to a high-finesse cavity in the Purcell regime exhibits a giant optical non-linearity due to the saturation of the two-level system at very low intensities, of the order of one photon per lifetime. We perform a detailed analysis of this effect, taking into account the most important practical imperfections. Our conclusion is that an experimental demonstration of the giant non-linearity is feasible using semiconductor micropillar cavities containing a single quantum dot in resonance with the cavity mode.

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Optical losses in plasma-etched AlGaAs microresonators using reflection spectroscopy

Cited by 59 publications

References 10 publications

Oscillatory variations in the Q factors of high quality micropillar cavities

Oscillatory variations in the Q factors of high quality micropillar cavities

Correlations between axial and lateral emission of coupled quantum dot–micropillar cavities

Giant optical nonlinearity induced by a single two-level system interacting with a cavity in the Purcell regime

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