Patent ID: 7110111

Claim:
A wide spectrum compact ultrashort laser source including: a laser primary source ( 6 ) with rare earth ions receiving a luminous pump flux ( 9 ) centered on a wavelength λ D , said flux ( 9 ) being emitted by a solid laser pump source ( 8 ), said primary source ( 6 ) including an active material and emitting a primary luminous flux ( 7 ) centered on a wavelength λ L of spectral width Δλ L , a photonic crystal fiber ( 2 ) having a length L, a section d, and a set of cavities ( 4 ) of diameter φ, injection optics ( 10 ) sending the primary luminous flux ( 7 ) emitted by the primary source ( 6 ) into the photonic crystal fiber ( 2 ), coupling optics ( 15 ) collecting the luminous flux ( 12 ) at the output of the photonic crystal fiber ( 2 ), said flux ( 12 ) being centered on a wavelength λ F and of spectral width Δλ P , characterized in that the spectrum is subjected inside the photonic crystal fiber ( 2 ) to a widening of more than 50% of the phase self-modulation.