Concept

Liste de phénomènes optiques

Publications associées (87)

Photoluminescence decay times in strong-coupling semiconductor microcavities

A theoretical investigation of the dynamics in a photoluminescence experiment in strong-coupling semiconductor microcavities is presented. Radiative recombination rates of microcavity polaritons in the strong-coupling regime and their scattering rates with ...

1996

Design and characterization of a phantom that simultaneously simulates tissue optical properties between 400 and 650 nm

Hubert van den Bergh, Georges Wagnières, Matthieu Philippe Emmanuel Zellweger

The design and characterization of optical phantoms which have the same absorption and scattering characteristics as biological tissues in a broad spectral window (between 400 and 650 nm) are presented. These low cost phantoms use agarose dissolved in wate ...

1996

Polaritons In High Reflectivity Microcavities - Semiclassical And Full Quantum Treatment Of Optical-Properties

Vincenzo Savona, Paolo Schwendimann

We present a comparison between the semiclassical and the full quantum descriptions of optical properties of quantum wells (QWs) in semiconductor microcavities. The semiclassical theory, which is based on a nonlocal treatment of the optical response of a s ...

1994

OPTICAL-PUMPING IN STRAINED IN0.2GA0.8AS/GAAS QUANTUM-WELLS

Nicolas Grandjean

Spin orientation by optical pumping experiments were undertaken on three strained In0.2Ga0.8As/GaAs QW's with different thicknesses. The results concerning the circular degree of polarization dependence on the exciting energy are very different from well t ...

1993

Quantitative diffuse reflectance and transmittance infrared spectroscopy of nondiluted powders

Hubert van den Bergh, Jacques-Edouard Moser

An adaptation of Kubelka's general model of diffuse reflectance and diffuse transmittance of light to nonideal scattering samples is proposed. It is applied to quant. Fourier transform IR spectrometry of nondiluted surface-derivatized silica powders. Corre ...

1992

Measuring the Chromatic Dispersion of Single Mode Fibres

Luc Thévenaz

The principal techniques for chromatic dispersion measurements are described with special focus on the interferometric methods. The techniques are compared with respect to their results, advantages and limitations, and the influence of birefringence effect ...

1988

All-fiber interferometer for chromatic dispersion measurements

Luc Thévenaz

An all-fiber interferometric method for chromatic dispersion measurements in meter-length single-mode fibers is presented. In a Michelson setup the physical length of a reference fiber was varied so as to obtain adjustable optical delay. Time resolution, e ...

1988

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