Active ring resonator-based single longitudinal mode low noise narrow band column vector fiber laser
A ring cavity, single longitudinal mode technology, applied in the direction of lasers, phonon exciters, laser components, etc., to achieve high polarization purity, stable output power, continuous and stable work
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[0022] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:
[0023] The invention uses the few-mode optical fiber engraved with the grating as the narrow-band mode selection method of the fiber laser, and combines the seed light injection into the ring fiber resonator to form the active ring fiber resonator to realize laser single longitudinal mode locking. The output spectrum is very stable, and the single longitudinal mode works, and the column vector light has high purity. The specific technical solutions of the present invention are briefly described below.
[0024] like figure 1 Shown is a schematic structural diagram of the present invention, a single longitudinal mode low-noise narrow-band cylindrical vector fiber laser based on an active ring cavity, including a pump source, a wavelength division multiplexer, a gain fiber, an isolator, a coupler, and a seed source , a first optical circulator, a se...
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