AI Article Synopsis
- Researchers explored the potential for generating nanojoule-level pulse energies using a femtosecond erbium-doped fiber Mamyshev oscillator, achieving stable pulse trains with energy up to 31.3 nJ.
- While these pulse energies compare favorably to previous results, the quality of the pulses decreases significantly at higher energies, leading to unwanted energy loss in the form of a picosecond pedestal.
- Numerical simulations confirm the experimental findings and highlight the gain spectrum and nonlinearity of the erbium-doped fibers as key challenges for high-energy pulse operation.
Article Abstract
We investigated the possibility of reaching nanojoule-level pulse energies in a femtosecond erbium-doped fiber Mamyshev oscillator. In experiments, lasers generate stable pulse trains with energy up to 31.3 nJ, which is comparable to the highest achieved by prior ultrafast erbium fiber lasers. The pulse duration after a grating compressor is around 100 fs. However, as the pulse energy increases, the pulse quality degrades significantly, with a substantial fraction of the energy going into a picosecond pedestal. Numerical simulations agree with the experimental observations, and allow us to identify the gain spectrum and the nonlinearity of the erbium-doped fibers as challenges to the operation of such oscillators at high pulse energy.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6526505 | PMC |
| http://dx.doi.org/10.1364/OL.44.000851 | DOI Listing |
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