All-fiber high-power middle- and far-infrared super-continuum spectrum light source
A supercontinuum light source and high-power technology, applied in the field of all-fiber high-power mid-to-far infrared supercontinuum light sources, can solve the problems of bulky pump source, lack of practicability, light source application limitations, etc., and simplify the fiber amplifier. , the output beam quality is good, the effect of improving the pumping efficiency
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[0023] An all-fiber high-power mid-to-far infrared supercontinuum light source, such as figure 1 As shown, it includes a thulium-doped fiber laser module 1 for generating high-repetition-frequency picosecond or femtosecond ultrashort pulses, a thulium-doped fiber amplifier module 2 for generating high-power high-order soliton pulses, and a A first SC spectrum generation module 3 for generating 2-4 μm high-power SC spectrum laser and a second SC spectrum generation module 4 for generating 2-14 μm high-power SC spectrum.
[0024] The above-mentioned thulium-doped mode-locked fiber laser module 1 uses a thulium-doped picosecond or femtosecond pulsed fiber laser based on semiconductor saturable absorbing mirror (SESAM) mode-locking, such as figure 1 As shown, its structure is: a WDM wavelength division multiplexer 1-2 used to inject pump light 1-1 connected end to end in sequence, a first gain fiber 1-3 used to provide amplification, and a single fiber used to output laser light ...
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