Concept

Instrument d'optique

Publications associées (89)

On the chromatic aberration of microlenses

The optical properties of plano-convex refractive microlenses with low Fresnel Number (typically FN < 10) are investigated. It turns out that diffraction effects at the lens aperture limit the range of the effective focal length. The upper limit of the foc ...

2006

An integrated holding-beam-at-transparency (hbat) configuration for semiconductor optical amplification or emission

Benoît Marie Joseph Deveaud, Andrea Crottini, Marc-André Dupertuis

An optical device for amplifying or emitting an optical beam of given wavelength comprises an optical source (20) in combination with a primary optical device (10) which is a semiconductor optical amplifier (SOA), a gain-clamped semiconductor optical ampli ...

2006

Near-field characterization of propagating optical modes in photonic crystal waveguides

Hans Peter Herzig

We analyze the propagating optical modes in a Silicon membrane photonic crystal waveguide, based on subwavelength-resolution amplitude and phase measurements of the optical fields using a heterodyne near-field scanning optical microscope (H-NSOM). Fourier ...

2006

Optofluidics

Demetri Psaltis

"Optofluidics" is the marriage of optics, optoelectronics and nanophotonics with fluidics. Such integration represents a new approach for dynamic manipulation of optical properties at length scales both greater than and smaller than the wavelength of light ...

2005

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

Tuning the optical properties of planar photonic crystals by liquid crystal infiltration

Romuald Houdré, Libero Zuppiroli, Liza Carol Andrea Dunbar, Rolando Ferrini, Barbara Wild

Recently there has been a growing amount of attention devoted to tuneable photonic crystals (PhCs) where the optical response of PhC structures can be dynamically modified. We will show how infiltrating planar PhCs with a synthetic organic material allows ...

SPIE2005

Synthesis and Optical Properties of Water-Soluble NIR Absorbing Star Polypeptides based on Functional Rylene Dyes

Harm-Anton Klok

In this contribution, the synthesis of two novel amino-functionalized terrylene and quaterrylene diimide derivatives is described. These chromophores have been used as initiators for the ring-opening polymerization of N€-benzyloxycarbonyl-L-lysine N-carbox ...

Springer, Springer-Verlag2004

Synthesis and optical properties of water-soluble NIR absorbing star polypeptides based on functional rylene dyes

Harm-Anton Klok

2004

Depolarization effects of light reflected by domain-structured cholesteric liquid crystals

Toralf Scharf

The simulation of light reflected by polymer-dispersed cholesteric liquid crystals is carried out using a model that takes into account the domain structure of the layer. The model is based on the 4×4 matrix calculation method of Berreman. One considers di ...

2002

Temperature dependence of optical properties of h-GaN films studied by reflectivity and ellipsometry

Nicolas Grandjean

Spectroscopic ellipsometry (SE) carried out at 300 K together with reflectivity measurements performed from 5 to 300 K are used to determine the temperature dependence of the refractive index of hexagonal GaN films between 360 and 600 nm. The refractive in ...

2000

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