2 results about "Dissipative soliton" patented technology

The invention belongs to the technical field of lasers. The invention provides an all-fiber laser with adjustable pulse width and a pulse width tuning method. The all-fiber laser comprises a narrow-band dissipation soliton mode-locked fiber laser seed source, a first fiber isolator, a fiber amplifier, a second fiber isolator, an optical circulator and a dispersion element which are sequentially arranged along a light path. The seed source generates a mode-locked pulse with a fixed initial spectral width; the nonlinear effect intensity is controlled by adjusting the driving current of the pumping source, so that the spectrum broadening amount of the pulse in the amplification process is regulated and controlled, the variable total spectrum width is formed, the spectrum width is subjected to linear time-frequency mapping through a dispersion element with a fixed group delay dispersion value, and finally continuous and electric control adjustment of the output pulse width is achieved. The whole system adopts an all-fiber structure, has the advantages of high stability, compact structure, good tuning linearity and the like, and is suitable for industrial processing, sensing and scientific research application scenes needing flexible pulse width regulation and control.

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.