Bragg Diffraction of Microcavity Polaritons by a Surface Acoustic Wave

Cho, Kikuo; Okumoto, Kazunori; Nikolaev, N. I.; Ivanov, A. L.

doi:10.1103/physrevlett.94.226406

Cited by 15 publications

(3 citation statements)

References 19 publications

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“…This interplay has serious consequences for the phase diagram of the system, 34,35 and most importantly, the disorder induces extra dephasing, which is revealed by a damping of the matter wave's BOs. 36,37 Currently, several works have already been devoted to the behavior of polariton condensates in periodic lattices, [38][39][40][41][42] and this topic has started to attract a lot of attention. In this paper we theoretically describe BOs of polaritons in a patterned one-dimensional microwire.…”

Section: Introductionmentioning

confidence: 99%

Bloch oscillations of an exciton-polariton Bose-Einstein condensate

2011

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We study theoretically Bloch oscillations of half-matter, half-light quasiparticles: exciton-polaritons. We propose an original structure for the observation of this phenomenon despite the constraints imposed by the relatively short lifetime of the particles and the limitations on the engineered periodic potential. First, we focus on the linear regime in a perfect lattice where regular oscillations are obtained. Second, we take into account a realistic structural disorder known to localize noninteracting particles, which is quite dramatic for propagation-related phenomena. In the nonlinear condensed regime the renormalization of the energy provided by interactions between particles allows us to screen efficiently the disorder and to recover oscillations. This effect is useful only in a precise range of parameters outside of which the system becomes dynamically unstable. For a large chemical potential of the order of the potential's amplitude, a strong Landau-Zener tunneling tends to completely delocalize particles.

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Section: Introductionmentioning

confidence: 99%

Bloch oscillations of an exciton-polariton Bose-Einstein condensate

2011

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“…However, for optical wavelengths away from electronic resonances, the elasto-optical modulation of the dielectric tensor associated with the deformation potential Ξ ij mechanism usually dominates over the indirect electro-optical contribution related with the piezoelectric potential Φ SAW . The electro-optical contribution may, however, become important in the presence of excitons or free carriers induced by optical fields or doping (see for instance [65][66][67]).…”

Section: Effects Of Strain and Piezoelectric Fields On The Band Edgesmentioning

confidence: 99%

Semiconductor optical waveguide devices modulated by surface acoustic waves

Crespo-Poveda¹,

Bühler²,

Sáez³

et al. 2019

J. Phys. D: Appl. Phys.

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This paper reviews the application of coherent acoustic phonons in the form of surface acoustic waves to control the response of semiconductor optical waveguide devices. We lay special emphasis on devices built upon three-dimensional rectangular waveguides, which offer excellent possibilities for integration due to the stronger confinement of the optical fields. We address the spatial distribution of the acoustic fields, as well as the excitation of surface acoustic waves in piezoelectric materials using interdigital transducers. The mechanisms responsible for the interaction between light and the acoustic modes in the optical waveguides, as well as the influence of waveguide parameters in the performance of the devices, are also discussed. Finally, we review the most important advances on the modulation of semiconductor optical waveguide devices built upon three-dimensional waveguides, and explore several exciting future technological possibilities. These include, among others, the generation of slow light in photonic crystal waveguides to enhance the sound-light interaction in the reviewed devices.

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“…In this case one deals with an acoustically induced Autler-Townes effect, which gives rise to spectral gaps ⌬ N in the THz polariton spectrum of AW-driven TO phonons, and is akin to the acoustical Stark effect for optically allowed excitons. [9][10][11][12][13][14] The AW-induced gaps ⌬ N , which open up in the polariton spectrum and develop with increasing acoustic intensity I ac , are due to the Nth-order resonant acoustic-phonon transitions within the polariton dispersion branches. These forbidden-energy gaps strongly modify the optical response of TO-phonon polaritons and make possible the effective AW-controlled manipulation of the THz field.…”

Section: Introductionmentioning

confidence: 99%

Terahertz response of acoustically driven optical phonons

2010

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The manipulation of transverse-optical ͑TO͒-phonon polaritons and the associated terahertz ͑THz͒ light field by means of an ultrasound acoustic wave is proposed and illustrated by calculating the TO-phonon-mediated THz response of acoustically pumped CuCl and TlCl crystals. We show the high-contrast acoustically induced change in the THz reflectivity and multiple THz Bragg replicas, which are associated with the far-infraredactive TO-phonon resonance driven by the ultrasonic wave. The effect, which stems from phonon anharmonicity and deals with the resonantly enhanced acousto-optical susceptibilities, refers to an operating acoustic intensity I ac ϳ 1 -100 kW/ cm 2 and frequency ac ϳ 0.1-1 GHz. Due to the anomalously small interaction length between the acoustic and optical fields, possible applications of the effect are in THz spectroscopy and THz acousto-optic devices.

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Bragg Diffraction of Microcavity Polaritons by a Surface Acoustic Wave

Cited by 15 publications

References 19 publications

Bloch oscillations of an exciton-polariton Bose-Einstein condensate

Bloch oscillations of an exciton-polariton Bose-Einstein condensate

Semiconductor optical waveguide devices modulated by surface acoustic waves

Terahertz response of acoustically driven optical phonons

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