30 results about "Dissipative soliton" patented technology

A fiber optic parametric amplifier that includes a resonating cavity. The resonating cavity includes linear fiber optic gain medium, with negative chromatic dispersion; and a nonlinear fiber optic gain medium with positive chromatic dispersion.

A system for single pass amplification of dissipative soliton-like seed pulses of 1-20 ps to produce output pulses of 50-200 fs, without requiring a stretcher. Such an amplifier relies on the inherent chirp of the seed pulse out of the oscillator instead of pulse stretching.

The invention discloses a multi-purpose bidirectional passive mode-locked all-fiber laser system, aiming to solve the technical problem that it is difficult to simultaneously output two types of ultrashort optical pulses in existing fiber lasers. The system includes a pump source (1), a wavelength division multiplexer (2), an erbium-doped gain fiber (3), a 2×2 output coupler (4), a first 3dB optical coupler (5), a second 3dB optical coupler (6), first polarization-dependent isolator (7), first polarization controller (8), second polarization-dependent isolator (9), second polarization controller (10), dispersion compensation fiber ( 11) and single-mode fiber (14). The 2×2 output coupler (4) outputs bidirectional mode-locked pulses, and its first output end (12) is connected with a single-mode optical fiber (14) outside the cavity for time-domain compression outside the cavity of the output pulses, so as to To obtain ultrashort pulses with high peak power, the second output terminal (13) directly outputs high energy dissipation soliton resonance pulses. The invention has the advantages of low cost and wide application range, and can be used as a high-peak-power femtosecond pulse light source, a high-energy picosecond and nanosecond pulse light source, and can also be used as a seed source for a high-energy pulse amplifier.

The invention provides a dual-wavelength dissipative soliton mode-locked laser, which relates to the field of laser technology and solves the problem that existing devices are realized by spatial coupling. The coupling efficiency of the system is relatively low, the spatial coupling equipment is bulky, and the system stability is poor, which is not convenient for practical use. application problem. The present invention includes a wavelength division multiplexer, a gain fiber, an isolator and a coupling output element, wherein it also includes a bandpass filter, a first polarization controller and a second polarization controller, a wavelength division multiplexer, a gain fiber, a band The pass filter, the first polarization controller, the isolator, the second polarization controller and the coupling output element are connected in sequence by optical fibers to form an all-fiber ring cavity, and the length of the gain fiber is such that it has both four-level oscillation and three-level The length of the vibration. The invention adopts a double-end pumping mode, an all-fiber ring cavity structure, a band-pass filter is inserted in the cavity, and a polarization rotation mode-locking mode is adopted to realize stable dual-wavelength laser output.

A normal-dispersion fiber laser is operated using parameters in which dissipative solitons exist with remarkably large pulse duration and chirp, along with large pulse energy. A low-repetition-rate oscillator that generates pulses with large and linear chirp can thus replace the standard oscillator, stretcher, pulse-picker and preamplifier in a chirped-pulse fiber amplifier.