Concept

Spin angular momentum of light

Publications associées (123)

The CRONOS suite of codes for integrated tokamak modelling

Joan Decker, Jonathan Bryan Lister, Sun Hee Kim, Javier García Hernández

CRONOS is a suite of numerical codes for the predictive/interpretative simulation of a full tokamak discharge. It integrates, in a modular structure, a 1D transport solver with general 2D magnetic equilibria, several heat, particle and impurities transport ...

2010

Orientation dependent emission properties of columnar quantum dash laser structures

Philipp Ridha

InAs columnar quantum dash (CQDash) structures on (100) InP have been realized by gas source molecular beam epitaxy for stacking numbers of up to 24. Laser devices show low threshold current densities between 0.73 and 3.5 kA/cm(2), dependent on the CQDash ...

2009

Giant spin-orbit splitting in a surface alloy grown on a Si substrate: BiAg2/Ag/Si(111)

Marco Grioni, Emmanouil Frantzeskakis

We report on the formation of a BiAg2/Ag/Si(1 1 1) trilayer system which exhibits a giant Rashba spin-splitting of its surface-localized states and is grown on a semiconducting substrate. Angle-resolved photoelectron spectroscopy (ARPES) results reveal the ...

2009

Observation of Ds1(2536)+→D+π-K+ and angular decomposition of Ds1(2536)+→D*+KS0

Olivier Schneider, Aurelio Bay, Mingkui Wang, Chao Wang, Tagir Aushev, Vladislav Balagura, Xiao Wang

Using 462fb-1 of e+e- annihilation data recorded by the Belle detector, we report the first observation of the decay Ds1(2536)+→D+π-K+. The ratio of branching fractions B(Ds1(2536)+→D+π-K+)B(Ds1(2536) +→D*+K0) is measured to be (3.27±0.18±0.37)%. We also s ...

2008

Weighted Clément operator and application to the finite element discretization of the axisymmetric Stokes problem

We consider the Stokes problem in an axisymmetric three-dimensional domain with data which are axisymmetric and have angular component equal to zero. We observe that the solution is also axisymmetric and the velocity has also zero angular component, hence ...

Springer-Verlag2006

Detection of non-paraxial optical fields by optical fiber tip probes

René Dändliker

The optical response of a single-mode uncoated fiber tip to a 3D polarized field, including longitudinal components, is investigated. The 3D field is produced by an opportune superposition of TE and TM plane waves. The contribution of the different field c ...

2006

Measurement of branching fractions for B → χc1(2)K (K*) at Belle

Olivier Schneider, Chao Wang, Tagir Aushev, Lei Zhang, Sun Hee Kim, Yuan Yuan

We have measured the branching fractions for the exclusive decay modes B→χc1(2)K(K*) using a 140 fb-1 data sample collected by the Belle detector at the KEKB asymmetric-energy e +e- collider. The measured branching fractions for B +→χc1K+, B0→χ c1K0, B0→χc ...

2006

Optical properties of microfabricated fully-metal-coated near-field probes in collection mode

Hans Peter Herzig, Laure Aeschimann

A study of the optical properties of microfabricated, fully-metal-coated quartz probes collecting longitudinal and transverse optical fields is presented. The measurements are performed by raster scanning the focal plane of an objective, focusing azimuthal ...

2005

Optical properties of nano-structured materials studied by means of interferometric techniques

In this thesis work we avail ourselves of optical interferometric techniques for the study of the optical properties of nano-structured materials. As a first step, we set up a multiple heterodyne scanning probe optical microscope (MH-SPOM). This apparatus ...

Institut de Microtechnique, Université de Neuchâtel2005

Plasma rotation induced by directed waves in the ion-cyclotron range of frequencies

Duccio Testa

Changes of the toroidal plasma rotation induced by directed waves in the ion-cyclotron range of frequencies (ICRF) have been identified experimentally for the first time on the JET tokamak. The momentum carried by the waves is initially absorbed by fast re ...

2004

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