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We demonstrate that a low repetition rate, all-fiber passively mode-locked Yb-doped fiber laser through nonlinear polarization rotation (NPR). A 1000 m long single-mode fiber (SMF) is inserted into the cavity to lower the repetition rate. The laser operates in dissipative soliton resonance (DSR) region and generates stable square pulses with a 202.3 kHz fundamental repetition rate. When the pump power...
An ultra-wide square pulse is demonstrated in a passively mode-locked Yb-doped fiber laser based on nonlinear polarization rotation effect. In our experiment, the pulse width can be tuned from 26 ns to 164 ns without wave-breaking when the pump power increases from 210 mW to 600 mW. And the peak power of the square pulse remains constant. The maximum output single pulse energy is 8.75 nJ at a pump...
An ultra-wide tunable square pulse operating in dissipative soliton resonance (DSR) region has been experimentally investigated in a passively mode-locked figure-of-eight fiber laser. In our experiment, by simply increasing the pump power, the pulse width can be tuned in an ultra-wide range from 135ns to 2272ns without wave-breaking while the peak power remains almost constant. The maximum output...
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