Raman Scattering Enhancement by Optical Confinement in a Semiconductor Planar Microcavity

Fainstein, A.; Jusserand, B.; Thierry‐Mieg, V.

doi:10.1103/physrevlett.75.3764

Cited by 117 publications

(108 citation statements)

References 16 publications

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“…Very similar results are obtained for conditions of double optical resonance, also shown schematically in Fig. 2, where both the incident 18 ( ϳ51°) and scattered photons are resonant with polariton modes. The single resonance conditions for ϭ36°have the advantage that the transmission of the incident photon varies only slightly as a function of incident energy, whereas there is a huge variation in transmission for double resonance, which strongly distorts the shape of the resonant Raman profile.…”

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Uncoupled excitons in semiconductor microcavities detected in resonant Raman scattering

et al. 2003

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Article:Stevenson, R.M., Astratov, V.N., Skolnick, M.S. et al. (2 more ReuseUnless indicated otherwise, fulltext items are protected by copyright with all rights reserved. The copyright exception in section 29 of the Copyright, Designs and Patents Act 1988 allows the making of a single copy solely for the purpose of non-commercial research or private study within the limits of fair dealing. The publisher or other rights-holder may allow further reproduction and re-use of this version -refer to the White Rose Research Online record for this item. Where records identify the publisher as the copyright holder, users can verify any specific terms of use on the publisher's website. TakedownIf you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing eprints@whiterose.ac.uk including the URL of the record and the reason for the withdrawal request. We present an outgoing resonant Raman-scattering study of a GaAs/AlGaAs based microcavity embedded in a p-i-n junction. The p-i-n junction allows the vertical electric field to be varied, permitting control of excitonphoton detuning and quenching of photoluminescence which otherwise obscures the inelastic light scattering signals. Peaks corresponding to the upper and lower polariton branches are observed in the resonant Raman cross sections, along with a third peak at the energy of uncoupled excitons. This third peak, attributed to disorder activated Raman scattering, provides clear evidence for the existence of uncoupled exciton reservoir states in microcavities in the strong-coupling regime. Uncoupled excitons in semiconductor microcavities detected in resonant Raman scattering

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confidence: 71%

Uncoupled excitons in semiconductor microcavities detected in resonant Raman scattering

et al. 2003

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“…Strong optical fields in semiconductor microcavities have been shown to increase the cross section for Raman scattering by thermal vibrations by several orders of magnitude [6]. In addition, Brillouin scattering efficiencies exceeding 40% have been reported in microcavities exposed to a high, nonthermal population of coherent acoustic modes [7].…”

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confidence: 99%

Phonon-Induced Optical Superlattice

et al. 2005

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We demonstrate the formation of a dynamic optical superlattice through the modulation of a semiconductor microcavity by stimulated acoustic phonons. The high coherent phonon population produces a folded optical dispersion relation with well-defined energy gaps and renormalized energy levels, which are accessed using reflection and diffraction experiments. DOI: 10.1103/PhysRevLett.94.126805 PACS numbers: 73.21.Cd, 42.65.Es, 42.70.Qs, 77.65.Dq The notion of a superlattice, a periodic stack of layers of different materials, was originally introduced as a way of tailoring the electronic band structure of semiconductors via quantum size effects [1]. The dispersion relation of elementary excitations in superlattices is characterized by minibands within a folded mini-Brillouin zone (MBZ) defined by the artificial periodicity and separated by minigaps corresponding to regions without propagating modes. The superlattice concept was later extended to phonons [2]. Although optical superlattices in the form of Bragg mirrors have been known for a long time, their two-and threedimensional counterparts, typically referred to as photonic crystals, are presently receiving considerable attention due to the ability to induce light localization and control spontaneous emission [3,4].Elementary excitations such as phonons, plasmons, and spin waves also create, when stimulated with a welldefined wave vector, a periodic modulation of the material's optical properties. In fact, this modulation provides a primary source of information about their energy dispersion when accessed using techniques such as Raman and Brillouin spectroscopy. An interesting question is whether an elementary excitation can create a dynamic optical superlattice with a folded dispersion and energy gaps. The interaction with photons, however, is usually very weak with induced energy shifts smaller than the characteristic width of the spectral lines. This interaction becomes enhanced for photon energies in resonance with the elementary excitation (resonant scattering) or by artificially increasing their population above the equilibrium (stimulated scattering). We point out that excitations of a bosonic nature are more appropriate for optical modulation with a high excitation density in order to avoid the broadening of the spectral features due to many-body effects [5]. The previous conditions may lead to the formation of new quasiparticles, as exemplified by the different forms of polaritons.The interaction with photons can be further enhanced in low-dimensional structures. Strong optical fields in semiconductor microcavities have been shown to increase the cross section for Raman scattering by thermal vibrations by several orders of magnitude [6]. In addition, Brillouin scattering efficiencies exceeding 40% have been reported in microcavities exposed to a high, nonthermal population of coherent acoustic modes [7]. A zone folded energy dispersion with minigaps has also been predicted for cavity polaritons modulated by coherent acoustic phonons [5]. To our knowl...

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“…Depending on the experimental configurations, ingoing and outgoing photons can be independently or simultaneously tuned to the protonic quantized levels of the cavity, leading to large enhancement of the light scattering external cross-section and directionality. Up to five orders of magnitude enhancement can be achieved in the double optical resonance (DOR) configuration [1].…”

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Raman Scattering Photonic and Polaritonic Resonances in Semiconductor Microcavities

Jusserand¹,

Fainstein²

1997

Acta Phys. Pol. A

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Raman Scattering Enhancement by Optical Confinement in a Semiconductor Planar Microcavity

Cited by 117 publications

References 16 publications

Uncoupled excitons in semiconductor microcavities detected in resonant Raman scattering

Uncoupled excitons in semiconductor microcavities detected in resonant Raman scattering

Phonon-Induced Optical Superlattice

Raman Scattering Photonic and Polaritonic Resonances in Semiconductor Microcavities

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