ALL-FIBRE LASER WITH ULTRASHORT PULSE LENGTH Russian patent published in 2013 - IPC H01S3/67 G02F1/01 B82B1/00 

FIELD: electrical engineering.

SUBSTANCE: all-fibre laser with ultrashort pulse length contains pump lasers connected in series, module of pump laser radiation input into ytterbium-doped fibre, splitter, polarisation controller, device for switching on in self-starting mode and mode synchronisation which is made as a saturated film absorber based on polymer composite with single-wall carbon nanotubes integrated into optical fibre. A part of the all-fibre laser containing ytterbium-doped fibre, module of pump laser radiation input into active fibre, isolating polariser and fibre splitter is made of monomode fibre with polarisation support. The saturated film absorber is located at surface of D-polished cladding of monomode fibre; at that plane of D-polished cladding of monomode fibre is set so that polarisation of transmitted radiation lies in this plane.

EFFECT: maintainability of stable polarisation at the output with generation of supershort pulses with wave length of 1 mcm.

1 dwg