公开(公告)号：US20190173256A1

公开(公告)日：2019-06-06

申请号：US16320993

申请日：2017-07-25

申请人： CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE -CNRS- ,  UNIVERSITE DE LIMOGES

发明人： Sébastien FEVRIER ,  Leonid KOTOV ,  Ammar HIDEUR

IPC分类号： H01S3/067 ,  A61B5/00 ,  G01N21/64 ,  H01S3/16 ,  H01S3/30

摘要： A femtosecond laser source includes an injection laser oscillator with an optical fiber doped with a given material, suitable for delivering, via an output optical fiber, a first picosecond pulse, at a first wavelength λ1; a power amplifier with an amplifying optical fiber for producing, from the first pulse, a second pulse at the first wavelength, with an energy that is amplified relative to the first pulse, the amplifying optical fiber being doped with the same material as the optical fiber of the injection oscillator and having a length less than or equal to the distance from the point of soliton compression and greater than the distance from which the amplifying optical fiber operates in non-linear mode; a fiber with a frequency shift suitable for receiving the second pulse and generating, by Raman self-shifting, a fundamental soliton at a second wavelength λ2 that is strictly greater than the first wavelength λ1.