Concept

Elliptical polarization

Publications associées (247)

X-ray absorption, refraction and resonant scattering tensors in selenated protein crystals: implications for data collection strategies in macromolecular crystallography

Polarized fluorescence spectra were recorded in the vicinity of the Se and Br K edges on crystals of the selenated protein aldose reductase in complex with a brominated inhibitor molecule. The X-ray absorption, refraction and resonant scattering tensors as ...

2005

Enhancement of the piezoelectric response of tetragonal perovskite single crystals by uniaxial stress applied along the polar axis: A free-energy approach

Nava Setter, Dragan Damjanovic, Marko Budimir

The influence of the uniaxial bias stress on the piezoelectric properties of tetragonal BaTiO3 and PbTiO3 monodomain crystals is modeled in the framework of the phenomenological Landau-Ginzburg-Devonshire theory. It is shown that tensile and compressive st ...

2005

Long-range radiative interaction between semiconductor quantum dots

Vincenzo Savona, Gaetano Parascandolo

We develop a Maxwell-Schrodinger formalism in order to describe the radiative interaction mechanism between semiconductor quantum dots. We solve the Maxwell equations for the electromagnetic field coupled to the polarization field of a quantum dot ensemble ...

2005

Birefringence measurement by use of digital holographic microscopy: examples with fiber optics and concrete samples

Christian Depeursinge, Tristan Colomb, Etienne Cuche

In this paper, we present a modified transmission digital holographic microscope that can be used to image the state of polarization. The resulting device, called polarization digital holographic microscope (Pol-DHM), records in off-axis geometry the inter ...

SPIE2005

X-ray ferromagnetic resonance spectroscopy

Harald Brune, Giovanni Boero, Radivoje Popovic, Stefano Rusponi, Pietro Gambardella

We present a method to measure continuous-wave ferromagnetic resonance (FMR) spectra based on the core-level absorption of circularly polarized x rays. The technique is demonstrated by using a monochromatic x-ray beam incident on an yttrium-iron-garnet sam ...

2005

Electrochemical modification and photoelectronic properties of carbon nanotubes

Kannan Balasubramanian

This thesis reports on the investigations performed on electrochemical functionalization and photoelectronic transport properties of individual single-wall carbon nanotubes (SWCNTs). The first part of the thesis is concerned with the controlled modificatio ...

EPFL2005

Three-dimensional ferroelectric domain imaging of bulk Pb(Zr,Ti)O-3 by atomic force microscopy

Nava Setter, Enrico Colla

We report on the ferroelectric domain evolution as a function of the depth of the surface of 100 mum thick bulk Pb(Zr,Ti)O-3 (PZT) doped with 2% Nb. Ferroelectric domain imaging (FDI) was performed by piezoelectric detection assisted by atomic force micros ...

2004

Jones vector imaging by use of digital holography: simulation and experimentation

Christian Depeursinge, Tristan Colomb, Etienne Cuche, Frédéric Montfort, Pierre Marquet

We present a method to image Jones vector by use of digital holography. We demonstrate that with a single hologram acquisition, the method allows to image and to calculate Jones vector and derive the polarization parameters. The principle consists in using ...

2004

Jones vector imaging by use of digital holography: Simulation results

Christian Depeursinge, Tristan Colomb, Etienne Cuche

We present a method to image Jones vector by use of digital holography. We show that with unique hologram acquisition, our method permits to image and to calculate Jones vector and therefore polarization parameters. The idea is to use two reference waves p ...

SPIE2003

Piezoelectric anisotropy-phase transition relations in perovskite single crystals

Nava Setter, Dragan Damjanovic, Marko Budimir

The orientation dependence of the longitudinal piezoelectric coefficient, d(33)(*), is investigated as a function of temperature in BaTiO3 and PbTiO3 crystals using the Landau-Ginsburg-Devonshire theory. We show that a presence of the ferroelectric-ferroel ...

2003

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