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Article Abstract
We look back at many challenges as well as unexpected successes encountered by the Mamyshev optical regenerator, which combines spectral broadening from self-phase modulation followed by offset bandpass filtering. Initially developed for ultra-fast all-optical processing of optical telecommunications signals, the Mamyshev regenerator has become most useful in the field of high-power fiber lasers. Implemented from optical fibers, the Mamyshev regenerator is compatible with integration on an optical chip, and excellent prospects are open for this polyvalent technology.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC12338879 | PMC |
| http://dx.doi.org/10.1515/nanoph-2024-0712 | DOI Listing |
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From signal processing of telecommunication signals to high pulse energy lasers: the Mamyshev regenerator case.
Nanophotonics
August 2025
Nonlinear Photonics Group, McGill University, 3480 University Street, Montréal, Canada.
We look back at many challenges as well as unexpected successes encountered by the Mamyshev optical regenerator, which combines spectral broadening from self-phase modulation followed by offset bandpass filtering. Initially developed for ultra-fast all-optical processing of optical telecommunications signals, the Mamyshev regenerator has become most useful in the field of high-power fiber lasers. Implemented from optical fibers, the Mamyshev regenerator is compatible with integration on an optical chip, and excellent prospects are open for this polyvalent technology.
View Article and Find Full Text PDFWe present a fiber laser system that generates femtosecond pulses at 914 nm from a continuous-wave solid-state laser source and using Nd-doped fiber amplifiers. This femtosecond laser architecture without mode-locking is based on picosecond pulse shaping by an electro-optic modulator followed by a Mamyshev regenerator to shorten the pulses down to 8 ps. Additional spectral broadening by self-phase modulation results in an output pulse spectrum of 10 nm, allowing the generation of nearly transform-limited 230 fs pulses.
View Article and Find Full Text PDFWe propose and demonstrate a non-mode-locking approach to generating multi-gigahertz repetition rate, femtosecond pulses in burst mode by shaping a continuous-wave (CW) seed laser in an all-fiber configuration. The seed laser at 1030 nm is first phase modulated and de-chirped to low-contrast, ∼2 ps pulses at a 17.5 GHz repetition rate, then carved to bursts at a 60 kHz repetition rate, and finally shaped to <2 ps clean pulses by a Mamyshev regenerator.
View Article and Find Full Text PDFBridging multi-mode fibers and Mamyshev regenerators holds promise for pulse energy scaling in fiber lasers. However, initialization of a multi-mode Mamyshev oscillator remains a practical challenge. Here we report self-starting spatiotemporal mode-locking (STML) in a multi-mode Mamyshev oscillator without active assistance.
View Article and Find Full Text PDFWe study numerically the possibility of using various gain-switched seed laser pulse parameters and fibers for a low-cost, all-fiber Mamyshev regenerator scheme. We find that for increasing pulse durations, sufficient spectral broadening will be difficult to achieve in practice and careful design of the system parameters is required for the regenerator to function. Furthermore, an optimal input peak power level can be defined for a given fiber and pulse duration that results from a balance of competing Kerr effect and stimulated Raman scattering.
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