Concept

Effet Kerr

Publications associées (200)

Brillouin Distributed Fibre Sensing: State of the Art and Perspectives

Developed societies require more and more information for their safety and for their economic development. Recent disasters due to landslides, fires in tunnels and collapses of bridges are a source of serious concern on the part of the public which seeks f ...

Materials Research Society of Singapore2009

High volume confinement in two-photon total-internal- reflection fluorescence correlation spectroscopy

Theo Lasser, Marcel Leutenegger, Iwan Märki, Denis Ivanov

We report results on two-photon total-internal-reflection fluorescence correlation spectroscopy with radially polarized light. The combination of liquid crystal spatial light modulator, providing radial polarization, with ultrafast laser (picosecond Nd:GdV ...

2009

High volume confinement in two-photon fluorescence correlation spectroscopy with radially polarized light

Theo Lasser, Marcel Leutenegger, Iwan Märki, Denis Ivanov

We present the results on two-photon total-internal-reflection fluorescence correlation spectroscopy. The combination of liquid crystal spatial light modulator, providing radial polarization, with ultrafast laser (picosecond Nd:GdVO4 laser) allowed us to t ...

2009

Novel Electromechanical Phenomena at the Nanoscale: Phenomenological Theory and Atomistic Modeling

Alexander Tagantsev

In the past two decades, the fact that “small is different” has been established for a wide variety of phenomena, including electrical, optical, magnetic, and mechanical behavior of materials. However, one largely untapped but potentially very important ar ...

2009

Control of polarization and dipole moment in low-dimensional semiconductor nanostructures

Philipp Ridha

We demonstrate the control of polarization and dipole moment in semiconductor nanostructures, through nanoscale engineering of shape and composition. Rodlike nanostructures, elongated along the growth direction, are obtained by molecular beam epitaxial gro ...

2009

Nonlinear impact of edge localized modes on carbon erosion in the divertor of the JET tokamak

Richard Pitts

The impact of edge localized modes (ELMs) carrying energies of up to 450 kJ on carbon erosion in the JET inner divertor is assessed by means of time resolved measurements using an in situ quartz microbalance diagnostic. The inner target erosion is strongly ...

American Physical Society2009

A semiclassical approach for electro-optic effect

Ahmad Ajdar Zadeh Oskouei

In this article, we present a semiclassical approach for modeling of electro-optic (EO) effect. We calculate phase retardation between x and y polarizations of optical electric field when a transverse external electric field is applied. Our results are wel ...

2008

Nano-gap high quality factor thin film SOI MEM resonators

Mihai Adrian Ionescu, Dimitrios Tsamados, Daniel Grogg, Marco Mazza, Hüseyin Cumhur Tekin

A 1.25 m thin SOI micro-electro-mechanical (MEM) resonator with a quality factor of 100’000 at 24.6 MHz is demonstrated. A nanogap fabrication process allows the fabrication of < 200 nm gaps, allowing for low polarization voltages. A motional resistance of ...

2008

Nonpolar GaN-based microcavity using AlN/GaN distributed bragg reflector

Nicolas Grandjean, Raphaël Butté, Eric Feltin, Gabriel Christmann, Denis Martin, Tiankai Zhu

Nonpolar GaN based microcavity (MC) made of a bottom AlN/GaN distributed Bragg reflector (DBR) and a top dielectric SiO2/SiNx DBR has been fabricated on a-plane GaN template. The 13 pair AlN/GaN DBR, centered around 372 nm, exhibits a peak reflectivity of ...

2008

Electro-optic and electro-absorption characterization of InAs quantum dot waveguides

Marco Rossetti

Optical properties of multilayer InAs quantum dot waveguides, grown by molecular beam epitaxy, have been studied under applied electric field. Fabry-Perot measurements at 1515 nm on InAs/GaAs quantum dot structures yield a significantly enhanced linear ele ...

2008

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