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Romuald Houdré

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Related publications (102)

Observation of Backaction and Self-Induced Trapping in a Planar Hollow Photonic Crystal Cavity

Romuald Houdré, Ulagalandha Perumal Dharanipathy, Zhaolu Diao, Nicolas Maxime André Descharmes, Mario Lucien Henri Tonin

The optomechanical coupling between a resonant optical field and a nanoparticle through trapping forces is demonstrated. Resonant optical trapping, when achieved in a hollow photonic crystal cavity is accompanied by cavity backaction effects that result fr ...

American Physical Society2013

Single particle detection, manipulation and analysis with resonant optical trapping in photonic crystals

Romuald Houdré, Ulagalandha Perumal Dharanipathy, Zhaolu Diao, Nicolas Maxime André Descharmes, Mario Lucien Henri Tonin

We demonstrate a resonant optical trapping mechanism based on two-dimensional hollow photonic crystal cavities. This approach benefits simultaneously from the resonant nature and unprecedented field overlap with the trapped specimen. The photonic crystal s ...

Royal Society of Chemistry2013

All-optical polariton transistor

Romuald Houdré

Although optical technology provides the best solution for the transmission of information, all-optical devices must satisfy several qualitative criteria to be used as logic elements. In particular, cascadability is difficult to obtain in optical systems, ...

Nature Publishing Group2013

Self-trapping and back-action effects in hollow photonic crystal cavity optical trap

Romuald Houdré, Ulagalandha Perumal Dharanipathy, Zhaolu Diao, Nicolas Maxime André Descharmes, Mario Lucien Henri Tonin

We report on the first experimental demonstration of resonant optical trapping of dielectric particles in a two-dimensional hollow photonic crystal cavity. The cavities are implemented in an optofluidic chip consisting of a silicon-on-insulator substrate a ...

Spie-Int Soc Optical Engineering2013

Imaging of high-Q cavity optical modes by electron energy-loss microscopy

Romuald Houdré, Marco Cantoni, Nicolas Le Thomas, Cécile Hébert, Duncan Thomas Lindsay Alexander

We show a technique that images the intensity distribution and local state of polarization of the optical field of high-quality factor optical modes confined in dielectric planar photonic crystal nanocavities. Based on energy-loss spectroscopy of swift ele ...

Amer Physical Soc2013

Near-infrared characterization of gallium nitride photonic-crystal waveguides and cavities

Jean-François Carlin, Romuald Houdré, Nicolas Grandjean, Ulagalandha Perumal Dharanipathy, Noelia Vico Triviño, Zhaolu Diao

We report the design and optical characterization of fully suspended wire waveguides and photonic crystal (PhC) membranes fabricated on a gallium nitride layer grown on silicon substrate operating at 1.5 mu m. W1-type PhC waveguides are coupled with suspen ...

Optical Society of America2012

Microfluidic integrated hollow photonic crystal cavities for single particle and resonant field interaction

Romuald Houdré, Ulagalandha Perumal Dharanipathy, Zhaolu Diao, Nicolas Maxime André Descharmes

A microfluidic-integrated single particle sensor based on hollow photonic crystal cavities is reported. The interaction relies on the reversible resonance frequency shift induced by a dielectric particle near the cavity. ...

Ieee2012

High quality factor two dimensional GaN photonic crystal cavity membranes grown on silicon substrate

Jean-François Carlin, Romuald Houdré, Jacques Levrat, Nicolas Grandjean, Raphaël Butté, Kirill Atlasov, Antonino Francesco Castiglia, Ulagalandha Perumal Dharanipathy, Noelia Vico Triviño, Georg Rossbach

We report on the achievement of freestanding GaN photonic crystal L7 nanocavities with embedded InGaN/GaN quantum wells grown by metal organic vapor phase epitaxy on Si (111). GaN was patterned by e-beam lithography, using a SiO2 layer as a hard mask, and ...

American Institute of Physics2012

Surface emitting Terahertz Photonic Crystal Quantum Cascade Laser realized by Bragg boundary condition

Romuald Houdré, Jérôme Faist, Christopher Bonzon, Zhaolu Diao

We theoretically and experimentally investigate a band edge Photonic Crystal (PhC) Quantum Cascade Laser (QCL) operating at 3.1 THz. The surface emission is achieved by using a second-order Bragg grating at the PhC tile boundaries. Highly directional surfa ...

Ieee2012

All-optical control of the quantum flow of a polariton condensate

Romuald Houdré, Cristiano Ciuti

Although photons in vacuum are massless particles that do not appreciably interact with each other, significant interactions appear in suitable nonlinear media, leading to hydrodynamic behaviours typical of quantum fluids(1-6). Here, we show the generation ...

Nature Publishing Group2011

Complex-coupled photonic crystal THz lasers with independent loss and refractive index modulation

Romuald Houdré, Jérôme Faist, Hua Zhang

Compared to near infra-red photonic crystal (PhC) band-edge lasers, achieving vertical emission with quantum cascade (QC) material operating in the THz range needs dedicated engineering because the TM polarized emission of QCLs favors in-plane emitting sch ...

2011

Inhibited emission of electromagnetic modes confined in subwavelength cavities

Romuald Houdré, Nicolas Le Thomas

We experimentally demonstrate the active inhibition of subwavelength confined cavity modes emission and quality factor enhancement by controlling the cavity optical surrounding. The intrinsic radiation angular spectrum of modes confined in planar photonics ...

2011

Statistical analysis of subnanometer residual disorder in photonic crystal waveguides: Correlation between slow light properties and structural properties

Romuald Houdré, Nicolas Le Thomas, Hua Zhang, Zhaolu Diao

The authors present a statistical study of residual disorder in nominally identical planar photonic crystal waveguides operating in the slow light regime. The focus is on the role played by the subnanometer scaled residual disorder inherent to state-of-the ...

2011

Polariton Superfluids Reveal Quantum Hydrodynamic Solitons

Romuald Houdré, Cristiano Ciuti

A quantum fluid passing an obstacle behaves differently from a classical one. When the flow is slow enough, the quantum gas enters a superfluid regime, and neither whirlpools nor waves form around the obstacle. For higher flow velocities, it has been predi ...

American Association for the Advancement of Science2011

Refractive Index Gas Sensing in a Hollow Photonic Crystal Cavity

Romuald Houdré, Nicolas Le Thomas, Hua Zhang, Jana Jágerská, Zhaolu Diao

We investigate hollow photonic crystal structures consisting in air-slot photonic crystal nanocavities. The high quality factor similar to 2.6x10(4) of such cavities along with a strong overlap between the resonant mode and the hollow core region allows fo ...

Ieee2011

Design and fabrication technology for high performance electrical pumped terahertz photonic crystal band edge lasers with complete photonic band gap

Romuald Houdré, Jérôme Faist, Hua Zhang

We detail the design and fabrication technology of two-dimensional photonic crystal (PhC) band edge emitting quantum cascade lasers (QCLs) operating at terahertz frequencies (similar to 3.3 THz). The entire QCL active layer has been deeply etched to form a ...

2010

Quantum fluid properties of polaritons in semiconductor microcavities

Romuald Houdré, Cristiano Ciuti

In semiconductor quantum wells embedded in a high finesse microcavity, excitons, which are bound electron-hole systems, strongly couple to photons, forming mixed quasi-particles called polaritons. Polaritons can be coherently excited by an incident laser f ...

2010

Spin Rings in Bistable Planar Semiconductor Microcavities

Romuald Houdré, Timothy Chi Hin Liew

A remarkable feature of exciton-polaritons is the strongly spin-dependent polariton-polariton interaction, which has been predicted to result in the formation of spin rings in real space [Shelykh et al., Phys. Rev. Lett. 100, 116401 (2008)]. Here we experi ...

2010

Cathodoluminescence Mapping of Cherenkov-Radiation Generated Bloch-Modes in Planar Photonic Crystals by Fast Electrons

Romuald Houdré, Marco Cantoni, Simon Schneider, Nicolas Le Thomas, Cécile Hébert, Duncan Thomas Lindsay Alexander

Cambridge, Cambridge University Press2010

Refractive index sensing with an air-slot photonic crystal nanocavity

Romuald Houdré, Nicolas Le Thomas, Hua Zhang, Jana Jágerská, Zhaolu Diao

We investigate an air-slot photonic crystal cavity for high-precision refractive index sensing. The high quality factor ∼2:6 × 10^4 of the cavity, along with a strong overlap between the resonant mode and the hollow core region, allows us to achieve an exp ...

Optical Society of America2010

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