Laurent Balet

Cette personne n’est plus à l’EPFL

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Publications associées (32)

Cavity-enhanced photonic crystal light-emitting diode at 1300 nm

Blandine Alloing, Laurent Balet

We report direct evidence of enhanced spontaneous emission in a photonic crystal light-emitting diode (LED) at telecom wavelength (lambda similar to 1300 nm). This result is crucial to obtain an electrically driven single photon source with high extraction ...

2009

Tuning of photonic crystal cavities by controlled removal of locally infiltrated water

Massimo Gurioli, Laurent Balet

We present a spectral tuning mechanism of photonic crystal microcavities based on microfluidics. The microinfiltration with water of one or few cavity holes and its subsequent controlled evaporation allow us to tune the cavity resonances in a spectral rang ...

American Institute of Physics2009

Near-field imaging of coupled photonic-crystal microcavities

Massimo Gurioli, Laurent Balet

We report by means of near-field microscopy on the coupling between two adjacent photonic crystal microcavities. Clear-cut experimental evidence of the spatial delocalization of coupled-cavity optical modes is obtained by imaging the electromagnetic local ...

AIP American Institute of Physics2009

Local infiltration of planar photonic crystals with UV-curable polymers

Romuald Houdré, Libero Zuppiroli, Rolando Ferrini, Laurent Balet, Pascale El-Kallassi

We present the local polymer infiltration of planar photonic crystal cavities via a maskless laser-writing technique. After the infiltration of the air holes with a UV-curable monomer a focused laser is used to locally polymerize the monomer in selected ho ...

2008

Local tuning of the optical response of two-dimensional photonic crystals

Romuald Houdré, Libero Zuppiroli, Rolando Ferrini, Laurent Balet, Pascale El-Kallassi

Local tuning of the optical response of GaAs-based two dimensional photonic crystals (PhCs) is reported. A selective polymer infiltration technique was developed. Scanning electron microscopy and optical measurements were used to characterize the filled Ph ...

Eindhoven University of Technology2008

Hybrid inorganic-organic photonic devices

Romuald Houdré, Libero Zuppiroli, Rolando Ferrini, Laurent Balet, Nicolas Le Thomas, Pascale El-Kallassi

We present the infiltration of semiconductor photonic devices with organic materials. The infiltration procedures are described and validated. In particular, the optical properties of hybrid photonic crystal cavities are studied. ...

EOS2008

Spectral tuning and near-field imaging of photonic crystal microcavities

Romuald Houdré, Carl Zinoni, Massimo Gurioli, Laurent Balet

We experimentally observe a sizable and reversible spectral tuning of the resonances of a two-dimensional photonic crystal microcavity induced by the introduction of a subwavelength size glass tip. The comparison between experimental near-field data, colle ...

2008

Nonlinear optical tuning of photonic crystal microcavities by near-field probe

Massimo Gurioli, Laurent Balet

We report on a nonlinear way to control and tune the dielectric environment of photonic crystal microcavities exploiting the local heating induced by near-field laser excitation at different excitation powers. The temperature gradient due to the optical ab ...

American Institute of Physics2008

Near-field mapping of quantum dot emission from single-photonic crystal cavity modes

Romuald Houdré, Massimo Gurioli, Laurent Balet, Nicolas Le Thomas

We directly investigate, by means of near-field spectroscopy, the spatial distribution of the optical cavity modes of 2D photonic crystal microcavities. Numerical simulations confirm that the photoluminescence maps of quantum dots embedded in the photonic ...

2008

Enhanced spontaneous emission in a photonic-crystal light-emitting diode

Blandine Alloing, Laurent Balet

We report direct evidence of enhanced spontaneous emission in a photonic-crystal (PhC) light-emitting diode. The device consists of p-i-n heterojunction embedded in a suspended membrane, comprising a layer of self-assembled quantum dots. Current is injecte ...

American Institute of Physics2008

Towards a LED based on a photonic crystal nanocavity for single photon sources at telecom wavelength

Romuald Houdré, Blandine Alloing, Carl Zinoni, Laurent Balet, Nicolas Le Thomas

A fundamental step towards achieving an "on demand" single photon source would be the possibility of electrical pumping for a single QD and thus the integration of such a device in an opto-electronic circuit. In this work we describe the fabrication proces ...

Elsevier2008

Quantum dot photonic crystal microcavities at 1300 nm for telecom-wavelength single-photon sources

Romuald Houdré, Blandine Alloing, Carl Zinoni, Laurent Balet, Nicolas Le Thomas

2006

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