Publications de Pascale El-Kallassi

Accordabilité de la réponse optique des cristaux photoniques par infiltration de matériaux organiques

Photonic crystals are stuctures in which the refractive index varies periodically on the wavelength scale in one, two or three dimensions. Due to interference effects, these structures can forbid light propagation over a large spectral range called "the ph ...

EPFL2009

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, Pascale El-Kallassi, Nicolas Le Thomas

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

Optical tuning of planar photonic crystals infiltrated with organic molecules

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

The optical tuning of InP-based planar photonic crystals (PhCs) infiltrated with a photo-responsive liquid crystal system is presented. Photo-induced phase transitions of a liquid crystal blend doped with azobenzene molecules are used to tune the optical r ...

2007