1 results about "Dissipative soliton" patented technology

The application belongs to the technical field of laser, and proposes a pulse width adjustable all-fiber laser and a pulse width tuning method, which comprises a narrow-band dissipative soliton mode-locked fiber laser seed source, a first optical fiber isolator, a fiber amplifier, a second optical fiber isolator, an optical circulator and a dispersion element arranged along an optical path in sequence. The seed source generates mode-locked pulses with a fixed initial spectral width; the intensity of the nonlinear effect is controlled by adjusting the driving current of the pump source, so as to control the spectral broadening of the pulse in the amplification process, form a variable total spectral width, and perform linear time-frequency mapping on the spectral width through the dispersion element with a fixed group delay dispersion value, so as to finally realize continuous and electrically controlled adjustment of the output pulse width. The whole system adopts an all-fiber structure, has high stability, compact structure and good tuning linearity, and is suitable for industrial processing, sensing and scientific research application scenarios that require flexible pulse width regulation.