Genetic algorithm optimization of broadband operation in a noise-like pulse fiber laser
Lapre, Coraline; Meng, Fanchao; Hary, Mathilde; Finot, Christophe; Genty, Goëry; Dudley, John M. (2023)
Lapre, Coraline
Meng, Fanchao
Hary, Mathilde
Finot, Christophe
Genty, Goëry
Dudley, John M.
2023
1865
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:tuni-202303243164
https://urn.fi/URN:NBN:fi:tuni-202303243164
Kuvaus
Peer reviewed
Tiivistelmä
The noise-like pulse regime of optical fiber lasers is highly complex, and associated with multiscale emission of random sub-picosecond pulses underneath a much longer envelope. With the addition of highly nonlinear fiber in the cavity, noise-like pulse lasers can also exhibit supercontinuum broadening and the generation of output spectra spanning 100’s of nm. Achieving these broadest bandwidths, however, requires careful optimization of the nonlinear polarization rotation based saturable absorber, which involves a very large potential parameter space. Here we study the spectral characteristics of a broadband noise-like pulse laser by scanning the laser operation over a random sample of 50,000 polarization settings, and we quantify that these broadest bandwidths are generated in only ∼ 0.5% of cases. We also show that a genetic algorithm can replace trial and error optimization to align the cavity for these broadband operating states.
Kokoelmat
- TUNICRIS-julkaisut [18592]