Patents Assigned to Amplitude Systemes
  • Patent number: 8995488
    Abstract: A high-gain optical amplifier for a wave to be amplified at a wavelength referred to as the emission wavelength, includes: optical pumping elements (4) producing a pump wave at a wavelength referred to as the pump wavelength; a solid amplifying medium (1) that is doped with active ions, the solid amplifying medium being capable of emitting laser radiation at the emission wavelength when the medium is pumped by the pumping elements; cooling elements (2) capable of cooling the solid amplifying medium to a temperature of no higher than 250 Kelvin; and optical multiplexing elements capable of coupling together the pump wave and the wave to be amplified in the amplifying medium. The amplifying medium has Stark sublevels contained within a spectral domain ranging over less than 200 cm?1 (approximately 20 nm, when expressed in wavelength). A laser including a resonant optical cavity and an amplifier are also described.
    Type: Grant
    Filed: August 16, 2011
    Date of Patent: March 31, 2015
    Assignee: Amplitude Systemes
    Inventors: Antoine Courjaud, Sandrine Anne Ricaud, Frederic Pierre Henri Jacques Druon, Jean-Louis Doualan, Patrice Jean-Pierre Camy
  • Patent number: 8582200
    Abstract: A chirped pulse fiber amplifier with nonlinear compensation, includes elements for generating a light pulse having an initial peak-power P0 and 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 P0 through the chirped pulse amplifier.
    Type: Grant
    Filed: January 15, 2009
    Date of Patent: November 12, 2013
    Assignee: Amplitude Systemes
    Inventors: Yoann Zaouter, Eric Mottay
  • Patent number: 8310749
    Abstract: An ultra-short high-power light pulse source including a first laser pump source (1), a mode-locked laser oscillator (2), a second laser pump source (4), a waveguide (6) capable of inserting spectral phases into the light pulses, and a compressor (8) capable of generating predetermined spectral phases into the light pulses. The waveguide (6) includes an element capable of compensating the predetermined spectral phases generated at least by the compressor (8), the second laser pump source (4) being capable of delivering a second pump light flow (5) having a power PL such that the spectral phases generated by the wave guide (6) are opposed or quasi opposed to the predetermined spectral phases generated by the compressor (8) in order to generate compressed ultra-short light pulses (9) at the output of the compressor (8) with a planar or quasi planar spectral phase.
    Type: Grant
    Filed: June 13, 2008
    Date of Patent: November 13, 2012
    Assignees: Amplitude Systemes, Institut d'Optique Graduate School, Centre National de la Recherche Scientifique
    Inventors: Eric Mottay, Patrick Georges, Yoann Zaouter, Marc Hanna, Dimitris Papadopoulos, Frederic Druon, Eric Cormier
  • Patent number: 7508847
    Abstract: 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 EL is 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.
    Type: Grant
    Filed: January 25, 2005
    Date of Patent: March 24, 2009
    Assignees: Amplitude Systemes, Centre National de la Recherche Scientifique (CNRS), Universite de Bordeaux 1
    Inventors: Clemens Honninger, Antoine Courjaud, Eric Mottay, François Salin
  • Patent number: 7110111
    Abstract: 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 ?D, the flux being emitted by a solid laser pump source. The primary source emits a primary light flux centered on a wavelength ?L of spectral width ??L. 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 ?. A coupling optics collects the light flux at the output of the photonic crystal fiber. The light flux is centered on a wavelength ?F and has a spectral width ??F. The spectrum is subjected in the photonic crystal fiber to an enlargement which is due for more than 50% to phase self-modulation.
    Type: Grant
    Filed: July 27, 2002
    Date of Patent: September 19, 2006
    Assignee: Amplitude Systemes
    Inventor: Eric Mottay