High power raman fiber laser
AssigneeRaytheon Company
InventorsFabio Di Teodoro, David A. Rockwell
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Abstract
A high-power Raman fiber laser includes: a seed laser; a plurality of pump lasers, each including a cladding and comprising of thulium-doped fiber laser (TDFL) and configured to operate in a 1935-2020 nm spectral window; a pump/seed combiner to combine outputs of the pump lasers and output of the seed laser and having a tapered portion including a cladding; and a Raman fiber amplifier having a core and a cladding surrounding the core, the seed laser is launched into the core, and pump laser output beams are launched into the cladding, to amplify the seed laser to produce an amplified output signal, and a brightness of the cladding of the Raman fiber amplifier is matched to a combined brightness of the plurality of pump lasers.
Claims20
A high-power Raman fiber laser comprising:
- a seed laser configured to operate in a first spectral window;
- a plurality of pump lasers, each including a cladding and comprising of thulium (Tm)doped fiber laser (TDFL), and configured to operate in a 1935-2020 nm spectral window;
- a pump/seed combiner to combine outputs of the pump lasers and output of the seed laser;
- the pump/seed combiner having a tapered portion including a cladding;
- and
- a Raman fiber amplifier having a core and a cladding surrounding the core, wherein the seed laser is launched into the core, and pump laser output beams are launched into the cladding, to amplify the seed laser to produce an amplified output signal having a wavelength in the first spectral window, wherein a brightness of the cladding of the Raman fiber amplifier is configured to match to a combined brightness of the plurality of pump lasers.
A method for operating a high-power laser, the method comprising:
- operating a seed laser in a first spectral window;
- operating a plurality of pump lasers in a second spectral window, each including a cladding and comprising of thulium-doped fiber laser (TDFL);
- combining outputs of the pump lasers and output of the seed laser using a pump/seed combiner having a tapered portion including a cladding;
- and
- amplifying the seed laser, using a Raman fiber amplifier having a core and a cladding surrounding the core, to produce an amplified output signal having a wavelength in the first spectral window, wherein the seed laser is launched into the core, and pump laser output beams are launched into the cladding.
Dependencies are inferred from the claim text.