Publications by Pierre-Yves Baroni

Silicon based micro-optical collimating element for mid-infrared Quantum Cascade Lasers

Pierre-Yves Baroni, Hans Peter Herzig, Lubos Hvozdara, Antoine Muller, Joab Di Francesco

A realization of a high numeric aperture, aspheric, silicon based collimating element for the mid-infrared (4 – 14 microns) Quantum Cascade Lasers, suited for mass production using computer driven reactive ion etching is presented. ...

2012

High numerical aperture silicon collimating lens for mid-infrared quantum cascade lasers manufactured using wafer-level techniques

Pierre-Yves Baroni, Hans Peter Herzig, Lubos Hvozdara, Antoine Muller, Joab Di Francesco

We present an aspheric collimating lens for mid-infrared (4-14 µ) quantum cascade lasers. The lenses were etched into silicon by an inductively coupled plasma reactive ion etching system on wafer level. The high refractive index of silicon reduces the heig ...

2012

Demonstration of superprism effect in silicon pillar 2-D photonic crystal infiltrated with liquid crystals

Pierre-Yves Baroni, Hans Peter Herzig, Yu-Chi Chang, Vincent Paeder

Superprism-based deflection of an optical beam is observed in a photonic crystal composed of a triangular lattice of pillars infiltrated with a liquid crystal. The device is based on a Silicon-on-insulator substrate and operates in the telecommunications b ...

2011

Nanostructured surface fabricated by laser interference lithography to attenuate the reflectivity of microlens arrays

Pierre-Yves Baroni, Hans Peter Herzig, Toralf Scharf

A subwavelength-scale square lattice optical nanostructure is fabricated using an interference photolithography process on the surface of a quartz microlens array. This nanostructuring of the quartz surface introduces an antireflective effect, reducing ref ...

2010

Tunable and Broadband Nanostructured Photonic Devices : Fabrication and Characterization

Pierre-Yves Baroni

The main topic of this thesis is the fabrication and characterization of structures smaller than the wavelength of light, for operation in the visible or near infrared spectral range. In the first part of this thesis, the fabrication of periodic structures ...

EPFL2010

Switchable photonic crystal cavity by liquid crystal infiltration

Pierre-Yves Baroni, Hans Peter Herzig, Armando Cosentino, Vincent Paeder, Qing Tan, Toralf Scharf

We report on the fabrication and optical characterization of a switchable photonic crystal nanocavity actuated by liquid crystals. This device acts as a filter presenting a transmission peak around the telecom wavelength λ = 1550 nm. Passing from the isotr ...

European Optical Society2010