Publications by Mario Lucien Henri Tonin

Piégeage optique résonant et analyse du mouvement de nanoparticules piégées dans des cristaux photoniques à cavités creuses

Optical trapping was used for decades in biotechnology for a broad range of applications. It can be used for remote manipulation, application of pico-Newton forces and even study DNA processes. Nevertheless, optical trapping setups can be cumbersome. In or ...

EPFL2016

Hybrid PDMS/glass microfluidics for high resolution imaging and application to sub-wavelength particle trapping

Romuald Houdré, Nicolas Maxime André Descharmes, Mario Lucien Henri Tonin

We demonstrate the fabrication of a hybrid PDMS/glass microfluidic layer that can be placed on top of non-transparent samples and allows high-resolution optical microscopy through it. The layer mimics a glass coverslip to limit optical aberrations and can ...

Royal Society of Chemistry2016

Global Optimization of Ultrahigh-Q H0 Photonic Crystal Nanocavity in Silicon

Vincenzo Savona, Romuald Houdré, Momchil Minkov, Ulagalandha Perumal Dharanipathy, Mario Lucien Henri Tonin

The design of photonic crystal cavities has always presented a considerable challenge over the past two decades. In this work, a global optimization technique has been used to maximize the Q/V ratio of a simple H0 type nanocavity. The optimization is carri ...

Ieee2014

High-Q silicon photonic crystal cavity for enhanced optical nonlinearities

Romuald Houdré, Vincenzo Savona, Momchil Minkov, Ulagalandha Perumal Dharanipathy, Mario Lucien Henri Tonin

We fabricate and experimentally characterize an H0 photonic crystal slab nanocavity with a design optimized for maximal quality factor, Q = 1.7 x 10(6). The cavity, fabricated from a silicon slab, has a resonant mode at lambda = 1.59 mu m and a measured Q- ...

American Institute of Physics2014

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

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

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

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