Locked-mode fiber laser containing circulation fiber loop
A fiber laser and fiber loop technology, applied in the laser field, can solve problems such as difficulties, output pulse repetition frequency and pulse width without tuning function, and achieve the effects of improving stability, reducing device cost, and reducing system volume
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[0038] A mode-locked fiber laser containing a cyclic fiber loop, including a linear cavity saturable absorber 1, a single-mode gain-doped fiber 2, a wavelength division multiplexer 3, a fiber coupler 5, and a second acousto-optic laser The switch 8 and the coated mirror 9 also include a pump source 4 , a fiber coupler 5 , an optical amplifier 6 and a first acousto-optic switch 7 .
[0039] The pumping source 4 is coupled with the pumping light input end of the wavelength division multiplexer 3 through an optical fiber to couple the laser light into the linear laser cavity. The pumping light wavelength of the pumping source 4 is 1550nm.
[0040] One end of the single-mode gain-doped fiber 2 is connected to the saturable absorber 1, and the other end is connected to the output end of the wavelength division multiplexer 3. The single-mode gain-doped fiber 2 generates signal laser gain under the pump laser.
[0041] The signal end of the wavelength division multiplexer 3 is couple...
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