Csem Centre Suisse D'electronique Et De Microtechnique Sa&#x2014;recherche Et D&#xe9;veloppement

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Csem Centre Suisse D'electronique Et De Microtechnique Sa

Empa Eidgenossische Materialprufungs-und Forschungsanstalt

Surys

Benjamin Gallinet

Guillaume Basset

Marc Schnieper

Jacques Haesler

Steve Lecomte

Rolando Ferrini

Giorgio Quaranta

Frank Nüesch

Luc Dümpelmann

Bruno Satilmis

Angélique Luu-dinh

Ton Offermans

Roland Hany

Thomas P Geiger

Vincent Jean Sauvage

A nano-structured optical wavelength transmission filter is provided. The optical filter includes a patterned substrate on which a high refractive index dielectric waveguide is arranged. A low index dielectric layer is arranged on the high refractive index dielectric waveguide, on which an array of metallic nanostructures is arranged. The layers of the optical filter have conformal shapes defined by a patterned surface of the substrate. An optical filter system includes the optical transmission filter and a detector array fixed to the substrate. A spectrometer includes at least one optical transmission filter and/or at least one said optical transmission filter system, and has a spectral resolution of lower than 30 nm for incident light having a wavelength between 300 nm and 790 nm. A method of fabrication of an optical filter, an optical filter system and a spectrometer is also described.

Optical filter, optical filter system, spectrometer and method of fabrication thereof

An angle-stable, miniaturized and integrate-able imaging system based on plasmon resonances or dielectric resonances for multispectral imaging maintaining full spatial resolution of the image sensor. Active tunability of the filter allows color recording, estimation of unknown spectra and determination of spectral singularities, for example laser lines, with the use of a conventional B/W camera. The system is characterized by high angular acceptance, cost-efficient fabrication and ease-of-use. This system can be used in conjunction with other commercial multispectral imaging systems such as RGB cameras to further enhance the spectral resolution. It can be adapted to different spectral ranges, depending on the application.

Multispectral or hyperspectral imaging and imaging system based on birefringent subwavelength resonating structure

In the present invention a new atomic clock is proposed comprising: at least one light source adapted to provide an optical beam, at least one photo detector and a vapor cell comprising a first optical window, said optical beam being directed through said vapor cell for providing an optical frequency reference signal, said photo detector being adapted to detect said optical frequency reference signal and to generate at least one reference signal, wherein&#x2014;said atomic clock comprises a first optical waveguide arranged to said first optical window, said first optical waveguide being arranged to incouple at least a portion of said optical beam, said first optical waveguide being sized and shaped so that said first guided light beam is expanded, a first outcoupler is arranged to outcouple at least a portion of said guided light beam to said vapor cell, &#x2014;the thickness t of the atomic clock is smaller than 15 nm.

Atomic clock

An imaging system suitable to provide an image of a surface portion of an object is disclosed. The system includes a light source arranged to provide a light beam, at least a first optical waveguide having a first face and having a second face opposite to the first face, the first face having an incoupling surface. The optical waveguide includes an outcoupling surface, a first diffraction grating arranged on the optical waveguide, and an imaging subsystem arranged to the outcoupling surface. The first diffraction grating is arranged to outcouple at least a fraction of the light beam.

Imaging system

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Muttenz, Switzerland

Benjamin Gallinet