Patent ID: 8630327

Claim:
A system for emitting a polychromatic light, comprising a laser cavity, means for optically pumping the laser cavity capable of emitting radiation based on at least one excitation wavelength, and light guiding means arranged in such a way as to supply a polychromatic light to an outlet in the event of excitation by said radiation in a non-linear interaction mode, the guiding means are arranged inside a cavity formed by at least two sub-cavities, a first sub-cavity of which forms said laser cavity and a second sub-cavity comprises said guiding means, and said first and second sub-cavities being interferometrically coupled, wherein the guiding means comprise at least an optical fiber of selected dimensions, wherein the optical fiber is microstructured and/or doped and/or has a decreasing transverse dimension based on a propagation, wherein the first sub-cavity comprises short pulse generating means and the second sub-cavity comprises external triggering means thereof arranged such that a triggering of said second sub-cavity causes a release of a short pulse generated by said first sub-cavity, wherein the optical pumping means are arranged such as to supply radiation of which power does not reach a laser emission threshold of the first sub-cavity while being substantially close thereto and wherein the second sub-cavity is substantially longer than the first sub-cavity.