Taofiq Paraïso

Cette personne n’est plus à l’EPFL

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Publications associées (14)

Enhancement of microcavity polariton relaxation under confinement

Benoît Marie Joseph Deveaud, Vincenzo Savona, François Morier-Genoud, Gaël Nardin, Barbara Pietka, Taofiq Paraïso, Ounsi El Daïf, Davide Sarchi, Roland Cerna

We experimentally investigate the relaxation of spatially confined microcavity polaritons. We measure the time- and energy-resolved photoluminescence under resonant excitation and in the low-density regime. In this way, we have access to the time evolution ...

2009

Nonlinear relaxation of zero-dimension-trapped microcavity polaritons

Benoît Marie Joseph Deveaud, Jean-Philippe Brantut, François Morier-Genoud, Gaël Nardin, Taofiq Paraïso, Ounsi El Daïf

We study the emission properties of confined polariton states in shallow zero-dimensional traps under nonresonant excitation. We evidence several relaxation regimes. For slightly negative photon-exciton detuning, we observe a nonlinear increase of the emis ...

AIP American Institute of Physics2008

Resonant nonlinear studies of trapped 0D-microcavity polaritons

Benoît Marie Joseph Deveaud, François Morier-Genoud, Gaël Nardin, Taofiq Paraïso, Ounsi El Daïf

We performed studies on microcavity polaritons trapped along the three dimensions of space, under resonant excitation on a confined lower polariton state. We observed various nonlinear behaviors as a function of the pump power, without any apparent loss of ...

WILEY-VCH Verlag2008

Engineering the spatial confinement of exciton polaritons in semiconductors

Benoît Marie Joseph Deveaud, Vincenzo Savona, Jean-Daniel Ganière, François Morier-Genoud, Taofiq Paraïso, Ounsi El Daïf, Reda Idrissi Kaitouni, Pierre Lugan

We demonstrate three-dimensional spatial confinement of exciton-polaritons in a semiconductor microcavity. Polaritons are confined within a micron-sized region of slightly larger cavity thickness, called mesa, through lateral trapping of their photon compo ...

2006

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