Early stages of continuous wave experiments on cavity‐polaritons

Houdré, R.

doi:10.1002/pssb.200560966

Cited by 60 publications

(42 citation statements)

References 95 publications

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“…11 dashed line and corresponds to the resonant situation where the linewidth of LP and UP are expected to be equal. We observe smaller emission linewidth for the LP polariton, which was often observed previously [34]. Figure 13 shows the cross sections of the map illustrating the linewidth of LP and UP (Fig.…”

Section: Magnetopolariton Intensity and Linewidthsupporting

confidence: 80%

Magnetic field tuning of exciton-polaritons in a semiconductor microcavity

et al. 2015

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We detail the influence of a magnetic field on exciton-polaritons inside a semiconductor microcavity. Magnetic field can be used as a tuning parameter for exciton and photon resonances. We discuss the change of the exciton energy, the oscillator strength, and redistribution of the polariton density along the dispersion curves due to the magnetically induced detuning. We have observed that field-induced shrinkage of the exciton wave function has a direct influence not only on the exciton oscillator strength, which is observed to increase with the magnetic field, but also on the polariton linewidth. We discuss the effect of the Zeeman splitting on polaritons the magnitude of which changes with the exciton Hopfield coefficient and can be modeled by independent coupling of the two spin components of excitons with cavity photons.

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Section: Magnetopolariton Intensity and Linewidthsupporting

confidence: 80%

Magnetic field tuning of exciton-polaritons in a semiconductor microcavity

et al. 2015

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“…We obtain a maximum value for the Rabi splitting of ⍀ = 68 meV ͑PL͒ and ⍀ = 76 meV ͑R͒ at T =10 K. In order to change the detuning ͑⌬ = E C − E X ͒ between the exciton mode and the cavity-photon mode we shifted the exciton energy by varying the temperature in the range from T =10 K to T = 290 K. With increasing temperature, ⍀ decreases to 64 meV ͑PL͒ and 70 meV ͑R͒ at room temperature. Since ⍀ is proportional to the square root of the exciton oscillator strength, 17 we relate this finding to the slight decreasing oscillator strength of the ZnO A exciton with increasing temperature, which was already observed on ZnO thin films. 13 A further proof for the presence of the strong coupling regime in our resonator is the k-dependence of the LP branch broadening ͑Fig.…”

Section: ͑4͒mentioning

confidence: 70%

Strong exciton-photon coupling in ZnO based resonators

Sturm¹,

Hilmer²,

Schmidt‐Grund³

et al. 2009

Journal of Vacuum Science &Amp; Technology B: Microelectronics and Nanometer Structures Processing, Measurement, and Phenomena

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The authors report on the fabrication of high quality all-oxide Bragg reflectors (BRs) and ZnO based resonators. The resonator consists of a bulk half-wavelength ZnO microcavity embedded between two BRs, each made of 10.5 layer pairs of yttria stabilized zirconia and Al2O3. Scanning transmission electron microscopy and atomic force microscopy, yield smooth interfaces and low surface roughness for the BR as well as the resonator. For the BR with 10.5 layer pairs the authors obtain reflectivities up to 99.2% within the Bragg stop band. The exciton-polariton dispersion was determined by both, polarization- and angle-resolved photoluminescence (PL) and reflectivity (R) measurements. The detuning between the uncoupled exciton mode and photon mode was changed by shifting the exciton mode energy in the temperature range of 10–290 K. Thereby we observed that a strong exciton-photon coupling regime up to room temperature is present in our resonators with maximum values of the Rabi splitting of about 68 meV (PL, T=10 K) and 76 meV (R,T=10 K).

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“…The interaction with the 0-2 transition at 468 nm is less clear, and we suspect that the interaction with this mode is either in the intermediate / weak-coupling regime [25,26]. The strong interaction with the 0-1 mode Fig.…”

Section: Resultsmentioning

confidence: 89%

Strong coupling in a microcavity containing β-carotene

Grant¹,

Jayaprakash²,

Coles³

et al. 2018

Opt. Express

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Abstract:We have fabricated an open-cavity microcavity structure containing a thin film of the biologically-derived molecule β-carotene. We show that the β-carotene absorption can be described in terms of a series of Lorentzian functions that approximate the 0-0, 0-1, 0-2, 0-3 and 0-4 electronic and vibronic transitions. On placing this molecular material into a microcavity, we obtain anti-crossing between the cavity mode and the 0-1 vibronic transition, however other electronic and vibronic transitions remain in the intermediate or weak-coupling regime due to their lower oscillator strength and broader linewidth. We discuss the consequences of strong-coupling for the possible modification of photosynthetic processes, or a re-ordering of allowed and optically-forbidden states.

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Early stages of continuous wave experiments on cavity‐polaritons

Abstract: This chapter presents a basics description of cavity-polariton physics and highlights the historical context of the early stages of continuous wave experiments performed on cavity-polaritons with M. Ilegems during the period 1992 -2000.

Cited by 60 publications

References 95 publications

Magnetic field tuning of exciton-polaritons in a semiconductor microcavity

Magnetic field tuning of exciton-polaritons in a semiconductor microcavity

Strong exciton-photon coupling in ZnO based resonators

Strong coupling in a microcavity containing β-carotene

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