Centre National De La Recherche Scientifique

Université De Limoges

Horiba Abx Sas

Compagnie Industrielle Des Lasers Cilas (Cilas)

Draka Comteq B.v.

Institut Franco-Allemand De Recherches De Saint-Louis

Multitel Inc.

Leukos

University De Limoges

Horus Laser

Universitë De Bordeaux

Institut Polytechnique De Bordeaux

Centre National De La Recherche Scientifique-Cnrs

Université De Bourgogne

Compagnie Industrielle Des Lasers Cilas

Vincent Couderc

Philippe Leproux

Alain Barthelemy

Kay Schuster

Dominique Pagnoux

Alexis Labruyère

Katarzyna Krupa

Badr Shalaby

Bertrand Vergne

Philippe Nerin

Thierry Cardinal

Alessandro Tonello

Philippe Roy

Laurent LeFort

Pierre-Alain Champert

Paul-Henri Pioger

Florent Doutre

Gilles Melin

Simon Lempereur

Jean-Marc Blondy

Jean-Louis Auguste

Sébastien Fevrier

Alexandre Kudlinski

Nelly Rongeat

Anne Fleureau

Patrick Brunel

Lionel Teule-Gay

Vincent Tombelaine

Christelle Lesvigne-Buy

Aurelian Crunteanu Stanescu

Frédéric Smektala

Sébastien Février

Alain Barthélémy

Ludovic Grossard

Dominique Gontier

Philippe Laproux

David Bouyge

Frédéric Desevedavy

Denisa Subtirelu

Roland Grando

Jens Kobelke

Yves Hernandez

Anthony Bertrand

Marco Andreana

Stephane Hilaire

Philippe Leveque

Christophe Louot

Hartmut Bartelt

Philippe Paul Leproux

Aurélian Crunteanu Stanescu

Annalisa De Angelis

Christelle Buy

Pierre Viale

Sebastien Fevrier

Guillaume Huss

Clément Strutynski

Sylvain Danto

Some embodiments relate to a generation device that includes: a pulsed laser source generating primary photons having at least one wavelength within pulses having time dissymmetry, a forming device(s) controlling the primary photons so as to generate a selective-polarization, focused input beam, and an optical fiber wherein the primary photons induce secondary photons having different wavelengths resulting from a raman conversion cascade and forming a wide-spectrum output beam having substantially constant energy.

Device for generating a polychromatic photon beam having substantially constant energy

Some embodiments are directed to a generating device, including a pulse laser source providing primary photons having at least one wavelength, shaping device(s) acting on the primary photons to provide an input beam, a nonlinear crystal, and controller(s) generating, in the nonlinear crystal, at least one electric field that is synchronous with the input beam and suitable for inducing a phase mismatching in the nonlinear crystal through an electro-optical effect, in order to convert the primary photons of the input beam into secondary photons having wavelengths belonging to a supercontinuum.

Device for generating a polychromatic and spatially self-adapted beam of photons

A generating device includes at least one pulsed laser source that delivers primary photons having at least one wavelength in a single spatial mode and in pulses having a high pump energy, forming means that act on the primary photons to deliver an input beam, and at least one optical fiber having at least ten modes between which the pump energy is initially distributed, and able to relocate the latter via a non-linear effect into a fundamental mode, before generating secondary photons of various wavelengths by wavelength conversions from the wavelength of the primary photons in the fundamental spatial mode.

Device for generating a beam of photons with wavelengths defining a substantially continuous supercontinuum

The invention relates to a method for triggering a pulsed light source, wherein it comprises at least one iteration of the following steps: receiving a control signal; determining what is called a separation time between the reception of said control signal and at least one preceding control signal; adjusting at least one control parameter of said pulsed light source depending at least on said separation; generating at least one electrical signal for triggering the pulsed light source depending on said at least one control parameter adjusted during the preceding step; and triggering the pulsed light source depending on said at least one triggering electrical signal.

Method and device for triggering pulsed light sources

A supercontinuum source capable of emitting waves between the infrared range and the ultraviolet range, includes a pulsed laser source () capable of generating a laser beam and a non-linear microstructured optical fiber () capable of receiving the laser beam, in such a way that the supercontinuum source is capable of generating a beam (F') over a pulse duration (T&#x2032;), characterized in that the supercontinuum source includes elements for varying the pulse duration.

Pulsed supercontinuum source of variable pulse duration

A laser system having a cavity formed by at least two sub-cavities and a mechanism for optically pumping a first of the at least two sub-cavities. In the system, the optical pumping mechanism is arranged in such away to not reach a laser emission threshold of the first sub-cavity, the first sub-cavity () comprising a device for generating a short pulse, a second sub-cavity () comprising an external triggering device. The first and second sub-cavities are coupled such that the triggering of the second sub-cavity has at least two such laser systems, to a light emission system with a wide spectral band, comprising such a laser system and a mechanism for generating non-linear optical effects inserted into the second sub-cavity, and to a light generator with a wide spectral band, comprising such a laser generator having at least one laser system provided with a mechanism for generating non-linear optical effects inserted into the second sub-cavity.

Generator and laser system comprising coupled sub-cavities

The present disclosure relates to a high-voltage pulse generator including a 'frozen-wave' generation system for generating high-voltage pulses and a trigger system for triggering the pulses, the generation system including a first and a second photoconductor element, wherein the triggering system includes means for generating a laser light beam and means for splitting the laser beam into two laser beam fractions, each laser beam fraction being directed onto a photoconductor element of the generation system, the splitting means being capable of controlling the distribution of the respective powers of the two laser beam fractions as a function of the orientation of the polarization of the laser beam. The present disclosure also relates to a facility comprising multiple high-voltage pulse generators and electrooptic pump-probe equipment operating such a high-voltage pulse generator.

Variable-spectrum high-power electrical pulse generator, and facility and equipment operating such a generator

A microstructured optical fiber for generating broadband white light having a core doped with germanium and silica cladding surrounding the core, the cladding including a plurality of holes arranged in the form of a regular mesh, wherein the diameter F of a hole in the cladding, the pitch L between the respective centers of two neighboring holes in the cladding, and the refractive index difference Dn between the germanium-doped fiber core and the silica of the cladding are such that the fiber can generate white light on the fundamental mode over a wavelength band having a width of at least 1000 nm.

Microstructured optical fiber and a device for generating broadband white light

A system for emitting a polychromatic light, has a laser cavity device used to optically pump the laser cavity emit radiation according to at least one excitation wavelength and light guiding mechanism arranged in such a way as to supply a polychromatic light to an outlet in the event of excitation by the radiation in a non-linear interaction regime. In the system, the guiding mechanism is arranged inside a cavity formed by at least two sub-cavities, a first sub-cavity forming the laser cavity and a second sub-cavity comprising the guiding mechanism, the first and second sub-cavities being coupled.

System for emitting a polychromatic light, provided with coupled sub-cavities

A method and device is provided for characterizing microscopic elements. A source signal may be chopped by means of microsystems of opto-electromechanical elements (MOEMS), which gives rise to temporal modulation of the excitation signals. The method of characterizing microscopic elements involves propagating a dispersed light source signal, spatially chopping the spectrum of the source signal into at least two excitation signals having predetermined wavelengths &#x3bb;, coding the excitation signals, focusing the excitation signals in order to generate a sensor signal propagated towards a measurement zone, and analyzing an interaction signal issuing from the interaction of the sensor signal with the microscopic elements situated in the measuring space. The spatial chopping of the spectrum of the source light signal is performed by a microsystem of opto-electromechanical elements (MOEMS).

Method and device for characterizing microscopic elements

The invention relates to a passively triggered microchip laser () formed by a cavity closed by an input mirror () and an output mirror (), characterized in that the cavity includes deflection means () designed to deflect a light beam () between the input mirror () and the output mirror ().

Pulsed microchip laser

The invention relates to a device () for generating short pulses, said device being characterized in that it comprises: a polarized pulse laser () having a polarization direction; a bi-refringent optical fiber () having bi-refringence axes, wherein said polarization direction is not co-linear with said bi-refringence axes; an output polarizer () provided at the output of said fiber, said polarizer being capable of selecting a polarization at the output of said fiber; wherein said pulse laser in a longitudinally quasi-single mode laser.

Laser system with picosecond pulse emission

A device for producing a polychromatic light including an optical pump that delivers a first radiation at a first wavelength; a light guide; and a selective injector that injects the radiation into the guide, the guide being arranged to generate a harmonic corresponding to the selected injector and provide a polychromatic light at an outlet, by non-linear excitation of the first radiation and the harmonic.

Device for production of a polychromatic light over a continuous spectrum by excitation at one wavelength

A dedicated polychromatic light generating device including optical pumping devices used to deliver radiation with at least two different excitation wavelengths and a light-guiding device used to deliver polychromatic light at an output when excited by the radiation in a non-linear interaction regime.

Device for generating polychromatic light with a continuous spectrum

A high power electric pulse generator includes a charge storage device, a high voltage source for charging the charge storage device, a first photoconductor element connected to the reference potential and to the storage device, a second photoconductor element connected to the storage device and to a useful load, a first light source for delivering a pulse of light to the first photoconductor, a second light source for delivering a pulse of light to the second photoconductor and a synchronization device for synchronizing the emission delay between the first light source and the second light source. The first photoconductor and the second photoconductor are passive semiconductor elements with a linear regime forming photosensitive switches, with the first and second photoconductors being doped silicon photoconductors.

High-power electric pulse generator

Growing community of inventors

Verneuil-sur-Vienne, France

Vincent Couderc