High Power Sub-Picosecond Pulsed SWIR Source Based on Thulium Assisted Raman Wavelength Shifting

We demonstrate 1.5W sub-picosecond pulsed source near 2μm. Cavity-less source is based on integrated association of 3rd order Raman wavelength-shifting and thulium amplification. Coherent spectrum of 61.5nm with 49% pump power conversion efficiency is achieved. OCIS codes: (230.2285) Fiber devices and optical amplifiers; (060.4370) Nonlinear optics, fibers; (140.3070) Infrared and far-infrared lasers