Raman suppression method and system for optical fiber laser light

The invention relates to a Raman suppression method and system for optical fiber laser light. The Raman suppression system comprises an optical fiber laser and a first Raman filter, and is characterized in that the optical fiber laser is used for generating and transmitting laser light; and the first Raman filter is arranged at an output end of the optical fiber laser and used for filtering Raman scattering light in the laser light transmitted by the optical fiber laser. In an optical fiber laser system with a laser amplifier, both an input end and an output end of the laser amplifier are provided with a second Raman filter. Raman suppression system can filter the Raman scattering light formed in the processing of generating, transmitting and amplifying the optical fiber laser light through setting the first Raman filter and the second Raman filters, thereby reducing or even avoiding output of the Raman scattering light along with the optical fiber laser light as far as possible, thus reducing performance inf