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Publications associées (346)

Modelling of light scattering from micro- and nanotextured surfaces

Christophe Ballif, Franz-Josef Haug, Corsin Battaglia

We present a calculation routine for the angular and spectral dependence of scattered light after transmission through textured interfaces. Based on a modified Rayleigh–Sommerfeld integral, the treatment requires only measured surface profiles, and the ref ...

American Institute of Physics2010

An Optofluidic Nanoplasmonic Biosensor for Direct Detection of Live Viruses from Biological Media

Hatice Altug, Min Huang

Fast and sensitive virus detection techniques which can be rapidly deployed at multiple sites are essential to prevent and control future epidemics and bioterrorism threats In this Letter we demonstrate a label free optofluidic nanoplasmonic sensor that ca ...

2010

UV-Photosensitivity of Germanium-free Bi-Al Silica Fibers

Hans Georg Limberger, Christian Ban

Mean index changes up to 2.2 × 10-3 were demonstrated in hydrogen loaded germanium free Bi-Al-doped silica fibers. Tensile stress changes indicate a contribution of compaction to the total index change. ...

2010

Small-size microlens characterization by multiwavelength high-resolution interference microscopy

Hans Peter Herzig, Toralf Scharf, Myun Sik Kim

Microlenses are widely studied in two main areas: fabrication and characterization. Nowadays, characterization draws more attention because it is difficult to apply test techniques to microlenses that are used for conventional optical systems. Especially, ...

Optical Society of America2010

Monolithic route to efficient dye-sensitized solar cells employing diblock copolymers for mesoporous TiO2

Henry Snaith, Stefan Guldin, Scott Charles Warren

We present a material and device based study on the fabrication of mesoporous TiO2 and its integration into dye-sensitized solar cells. Poly(isoprene-block-ethyleneoxide) (PI-b-PEO) copolymers were used as structure directing agents for the sol–gel based s ...

2010

Optofluidic distributed feedback dye laser via evanescent gain

Demetri Psaltis, Andreas Vasdekis, Wuzhou Song

We demonstrate optofluidic evanescent dye lasers based on two types of solid distributed feedback (DFB) grating cavities- the first order linear DFB gratings which gives in-plane laser emitting and second order circular DFB gratings which gives surface las ...

Spie-Int Soc Optical Engineering, Po Box 10, Bellingham, Wa 98227-0010 Usa2010

Unit cells for dual-polarized and polarization-flexible reflectarrays with scanning capabilities

Julien Perruisseau-Carrier

We present the analysis and design of reflecting cells capable of dynamically and independently control the reflection phase of each component of a dual-polarized impinging wave. Such capability is of significant interest for the future implementation of d ...

2009

Fabry-Perot Nanocavities in 3D Plasmonic Crystals for Enhanced Biosensing

Hatice Altug

Extraordinary light transmission effect through Fabry-Perot cavities in 3D plasmonic cystals consisting of two physically separated metallic nanohole and nanodisk array layers is demonstrated. These cavity resonances are highly sensitive to refractive inde ...

IEEE2009

Grazing function g and collimation angular acceptance

Valentina Previtali

The grazing function g is introduced—a synchrobetatron optical quantity that is analogous (and closely connected) to the Twiss and dispersion functions β, α, η, and η′. It parametrizes the rate of change of total angle with respect to synchrotron amplitude ...

American Physical Society2009

Investigation into the coupling of quantum dots to photonic crystal nanocavities at telecommunication wavelengths

Laurent Balet

Recently, the emission of single photons with emission wavelength in the 1.3 µm telecommunication window was demonstrated for InAs quantum dots. This makes them strong candidates for applications such as quantum cryptography, and in a longer term, quantum ...

EPFL2009

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