Centre National De La Recherche Scientifique

Université De Limoges

Université´de Rouen

Université De Rouen Normandie

Institut National Des Sciences Appliquees-rouen

Institut National Des Sciences Appliquees De Rouen

Ammar Hideur

Philippe Roy

Sébastien Fevrier

Thomas Godin

Adil Haboucha

Arnaud Bultel

Angela Vella

Said Idlahcen

Caroline Lecaplain

Jonathan Houard

Laurent Arnoldi

Lorenzo Rigutti

Leonid Kotov

A laser source for emitting a group of pulses, includes a primary laser source suitable for emitting at least one primary laser pulse; at least one interferometer suitable for forming, from the primary laser pulse, a plurality of secondary laser pulses, each interferometer comprising at least one delay line allowing two secondary laser pulses to be temporally separated, by a delay comprised between 50 ps and 10 ns; and a single-mode amplifying optical fiber intended to receive the secondary laser pulses, in order to form as output a group of spatially superposed pulses.

Laser source for emitting a group of pulses

The invention relates to a laser oscillator comprising an amplifying optical fiber (MA) inserted in a resonant cavity so as to act as an active medium, and pumping means (DL, CP) causing a population inversion in said amplifying optical fiber, characterized in that said amplifying optical fiber comprises at least two cores (C1, C2) optically coupled to each other in a common cladding (G), and in that the shapes, sizes, refractive indices and the relative arrangement of said cores are chosen so that super-modes are supported, at least one (SMI) of which super-modes has, in an emission spectral band of said laser oscillator, a normal chromatic dispersion.

Fiber-optic laser oscillator

Growing community of inventors

Le Petit Quevilly, France

Ammar Hideur