Centre National De La Recherche Scientifique

University of Southampton

Université De Limoges

University De Limoges

Horus Laser

Laurent LeFort

David John Richardson

Vincent Couderc

Morten Ibsen

Lars Johan Albinsson Nilsson

Andrew Malinowski

Jonathan Hugh Vaughan Price

Philippe Leproux

Paul-Henri Pioger

David Bouyge

Christelle Lesvigne-Buy

Aurelian Crunteanu Stanescu

Aurélian Crunteanu Stanescu

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

A source of pulses of coherent radiation at a wavelength of approximately 1 &#x3bc;m, comprises a pump source for producing pump light; a laser cavity comprising an Yb-doped gain medium arranged to receive the pump light, the laser cavity being modelocked to generate laser pulses at a defined repetition rate; a pulse detector arranged to generate a pulse selection signal indicative of the repetition rate; a pulse selector arranged to reduce the repetition rate of the laser pulses responsive to the pulse selection signal from the pulse detector by passing only selected ones of the laser pulses; and at least one optical amplifier for amplifying the laser pulses of reduced repetition rate. The at least one optical amplifier can be configured for chirped or parabolic pulse amplification.

Pulsed light sources

A source of pulses of coherent radiation at a wavelength of approximately 1 &#x3bc;m, comprises a pump source for producing pump light, a laser cavity comprising an Yb-doped gain medium arranged to receive the pump light, the laser cavity being modelocked to generate laser pulses at a defined repetition rate; a pulse detector arranged to generate a pulse selection signal indicative of the repetition rate; a pulse selector arranged to reduce the repetition rate of the laser pulses responsive to the pulse selection signal from the pulse detector by passing only selected ones of the laser pulses; and at least one optical amplifier for amplifying the laser pulses of reduced repetition rate. The at least one optical amplifier can be configured for chirped or parabolic pulse amplification.

Growing community of inventors

Limoges, France

Laurent LeFort