Institut National De La Recherche Scientifique

Centre National De La Recherche Scientifique

Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

L'université De Bordeaux

Bruno E Schmidt

François Légaré

Heide Ibrahim

François Legaré

Roberto Morandotti

Eric Cormier

Luca Razzari

Riccardo Piccoli

Philippe Lassonde

Matteo Clerici

Guilmot Ernotte

Stéphane Petit

Jean-Christophe Delagnes

Younggyun Jeong

Adrien Leblanc

Francois Legare

François LÉGARÉ

A method comprising forming a linear temporal non-stationary amplitude filter by interacting a high intensity ultrashort laser pump pulse with a photo-excitable material, focusing an ultrashort broadband laser probe pulse over the photo-excited material, acquiring a two-dimensional spectrogram and retrieving amplitudes and phases of both temporal probe pulse and linear non-stationary amplitude filter from the two-dimensional spectrogram.

Linear time-gate method and system for ultrashort pulse characterization

A system and a method for generating tunable ultrafast optical pulses, the method comprising spectral broadening of a laser input beam by propagating the laser input beam in a nonlinear medium of a third-order nonlinear susceptibility &#x3c7;, yielding an output laser spectrum; and one of: i) selecting at least one portion of the output laser spectrum, yielding an output pulse different than the input pulse and centered at a different frequency; ii) temporal compensation and spatial spreading of spectral components of the output laser spectrum; selecting two pulses at two different frequencies; and nonlinearly mixing the two pulses together in a first second-order nonlinear susceptibility &#x3c7;nonlinear crystal into a third pulse centered at a frequency which is a difference between the frequencies of the first two pulses; and iii) dividing output laser spectrum into a pump beam and a probe beam, directing a pump pulse to a third second-order nonlinear crystal for THz radiation generation; and directing a probe pulse to a third second-order nonlinear crystal for THz radiation reconstruction.

Method and system for generating tunable ultrafast optical pulses

A system and a method for infrared spectrometry, the method comprising multiphoton absorption with a material positioned in the Fourier plane of a 2f setup, the material being one of: i) a visible light sensitive, high band gap material and ii) an IR sensitive material. The system comprises one of: i) a visible light sensitive, high band gap material and ii) an IR sensitive material, positioned in the Fourier plane of a 2f setup.

System and method for infrared spectrometry

A method and a system for nonlinear optical interaction in a nonlinear medium, comprising interacting at least one input beam in a nonlinear medium located at a spectrally dispersed plane. The method and system allows generating output photons from input photons, the output photons having properties that linearly depend on the properties of the input photons and that are mutually independent, comprising interacting the input photons in a nonlinear medium located at a spectrally dispersed plane.

Method and system for linearizing non-linear optics

A system and method for high power parametric amplification based on performing amplification in a frequency domain after time domain pulses are optically Fourier transformed, to overcome bandwidth limitations. In a nutshell, a first optical Fourier transformation of a seed spectrum is performed and parametric amplification is carried out in this spatially dispersed frequency plane. As a consequence, individual parts of the spectrum can be amplified using an optical amplification medium comprising a series of optical amplification units, such as different narrowband crystals, placed one next to each other. Each crystal is tuned independently to optimize its corresponding spectral slice. A second optical Fourier transformation recovers the time domain laser pulses. This method enables scalability of amplified bandwidth and pulse energy at the same time.

Method and system for high power parametric amplification of ultra-broadband few-cycle laser pulses

Growing community of inventors

Montreal, Canada

Bruno E Schmidt