Amplitude Systemes

Centre National De La Recherche Scientifique

Universitë De Bordeaux

Institut D'optique Graduate School

Amplitude

Université De Bordeaux I

Eric Mottay

Clemens Honninger

Yoann Zaouter

Eric Cormier

Patrick Georges

Antoine Courjaud

Marc Hanna

Frederic Druon

Martin Delaigue

Dimitris Papadopoulos

François Salin

Eric Audouard

Frédéric Druon

John Lopez

Guillaume Bonamis

Konstantin Mishchick

Francois Salin

A system for the optical amplification of high-energy ultrashort light pulses, includes: an oscillator that can emit light pulses of sub-picosecond duration &#x3c4;, a pre-compensator, and a solid optical amplifier that can amplify the chirped light pulses. The pre-compensator has a negative group velocity dispersion, the pre-compensator being capable of generating negatively chirped light pulses, and the optical amplifier has a positive group velocity dispersion, the optical amplifier being disposed such as to receive and amplify the negatively chirped light pulses. The optical amplifier is configured such that the light pulses can induce a broadening of the spectral gain band &#x394;&#x3bd; by self-phase modulation, such as to generate amplified, time-compressed light pulses of duration &#x3c4;, which is shorter than the duration &#x3c4;=1/&#x394;&#x3bd; of the bandwidth limitation of the optical amplifier.

System and method for the optical amplification of ultrashort light pulses beyond the limit of the spectral gain band

A chirped pulse fiber amplifier with nonlinear compensation, includes elements for generating a light pulse having an initial peak-power Pand an initial duration T, a stretcher including at least one optical diffraction network having a line density higher than 1200 lines/mm and suitable for time-stretching the pulse and of inserting a time asymmetry in the stretched pulse, an amplifying fiber including a doped optical fiber section coupled with an optical pumping element and suitable for amplifying the stretched pulse for producing a pulse having a power, a compressor with optical diffraction grating suitable for time-compressing the amplified pulse so that the stretcher and the compressor are mismatched, the mismatch between the stretcher and the compressor being suitable for simultaneously compensating the second- and third-order nonlinear dispersions in the amplifying fiber during the propagation of a pulse having an initial power Pthrough the chirped pulse amplifier.

Fiber chirped pulse amplifier with nonlinear compensation

An ultra-short high-power light pulse source including a first laser pump source (), a mode-locked laser oscillator (), a second laser pump source (), a waveguide () capable of inserting spectral phases into the light pulses, and a compressor () capable of generating predetermined spectral phases into the light pulses. The waveguide () includes an element capable of compensating the predetermined spectral phases generated at least by the compressor (), the second laser pump source () being capable of delivering a second pump light flow () having a power Psuch that the spectral phases generated by the wave guide () are opposed or quasi opposed to the predetermined spectral phases generated by the compressor () in order to generate compressed ultra-short light pulses () at the output of the compressor () with a planar or quasi planar spectral phase.

Ultra-short high-power light pulse source

A rare earth ion ultrashort laser source includes a resonant cavity having a first output face partially reflecting and a second reflecting face. The source also includes a first active material, which receives a pump luminous flux transmitted via a first solid laser pump source. The resonant cavity exhibits a length of optical path travelled by the pulses greater than 7.5 m so that the pulsed energy Eis greater than 100 nJ, the optical path including at least one passage in the active material and the ultrashort laser source includes elements for lengthening the resonant cavity thereby enabling to extend the length of the optical path travelled by the luminous pulses in the resonant cavity, the ABCD propagation matrix of the resonant cavity being close to the unit matrix so that the features of the luminous beam going back and forth in the resonant cavity remain unchanged.

Ultra-short laser source with rare earth ions and stable pulse train and device for lengthening a laser cavity

A wide-spectrum compact ultrabrief laser source includes a rare-earth ion primary laser. The source is pumped by a pump light flux centered on a wavelength &#x3bb;, the flux being emitted by a solid laser pump source. The primary source emits a primary light flux centered on a wavelength &#x3bb;of spectral width &#x394;&#x3bb;. The latter is injected via an optical injection into a photonic crystal fiber having a length L, a cross-section d, and a set of cavities of diameter &#x3c6;. A coupling optics collects the light flux at the output of the photonic crystal fiber. The light flux is centered on a wavelength &#x3bb;and has a spectral width &#x394;&#x3bb;. The spectrum is subjected in the photonic crystal fiber to an enlargement which is due for more than 50% to phase self-modulation.

Controlled wide spectrum compact ultrabrief laser source

Growing community of inventors

Begles, France

Eric Mottay