3 results about "Soliton pulse" patented technology

A mid-infrared laser generation system based on dispersion-managed soliton bunch pulses. The system can achieve high-power, high-efficiency and high-proportion mid-infrared laser output, and has the advantages of an all-fiber configuration, a compact structure and a high power proportion in a longer-wavelength region of a mid-infrared spectrum. A pulsed fiber laser device generates a nanosecond pulse laser in a 1.5-micron band. A fiber pulse stretcher is made of a single-mode silica fiber, splits nanosecond pulses into a plurality of ultrafast soliton pulses by means of a nonlinear effect, and performs spectral energy conversion from 1.5 microns to 2.4 microns. A fiber laser amplifier further increases the output power of a stretched pulse laser and extends a spectrum to a 2.7-micron band, and also increases pulse energy beyond a 2.3-micron band. A fiber mode field adapter efficiently couples into a nonlinear fiber pulses generated in the fiber laser amplifier. The nonlinear fiber extends a laser to a mid-infrared 3-5-micron band, thereby achieving high-power, high-efficiency and high-proportion mid-infrared laser output.

The application relates to the field of optical technology and discloses a second-order soliton trap transmission state regulation method based on an optical event horizon simulation, which comprises the following steps: preparing a second-order soliton pulse and an external probe pulse, wherein the second-order soliton pulse is generated through the balance of dispersion and nonlinearity in a nonlinear optical fiber, the external probe pulse is a weak power pulse, the group velocity parameter of the second-order soliton pulse and the external probe pulse is measured, and group velocity matching and group velocity mismatch conditions are set; through accurate setting of the group velocity matching and mismatch conditions and quantitative calculation of the refractive index change caused by the soliton pulse based on the Kerr effect, an equivalent event horizon is defined, definite physical parameter benchmarks and stable potential well environments are provided for transmission state regulation, the stability of a soliton potential well action boundary can be determined and ensured, the transmission state misjudgment problem caused by potential well drift and distortion is overcome, and the accuracy of the regulation process and the predictability of the result are ensured.

This invention discloses a spatiotemporally pure high even-order dispersion soliton fiber laser and its generation method, belonging to the field of communication technology. It comprises a pump source, a wavelength division multiplexer, a few-mode erbium-ytterbium co-doped fiber, a first photonic lantern, a spectral pulse shaper, a second photonic lantern, a few-mode fiber beam splitter, and a saturable absorber connected sequentially to form a ring optical path. The first photonic lantern decomposes the multimode beam into multiple single-mode beams. The spectral pulse shaper independently applies a phase mask to each single-mode beam, introducing pure high even-order dispersion and compensating for low-order dispersion. The second photonic lantern multiplexes the modulated single-mode beams back into a multimode beam. This invention achieves independent and precise dispersion control of different transverse modes by spatially decoupling the multimode optical field. For the first time, it generates stable soliton pulses dominated by pure high even-order dispersion in a spatiotemporally mode-locked fiber laser, significantly improving pulse energy carrying capacity and providing a new solution for the development of high-energy ultrafast light sources.