All-fiber generation of 29-fs pulses at 1.3-{\mu}m via Cherenkov radiation

TL;DR

This paper demonstrates an all-fiber system producing 29-fs pulses at 1.3 μm via Cherenkov radiation from an ultrafast Er-doped laser, offering a compact ultrashort pulse source for biomedical and spectroscopy applications.

Contribution

It introduces a novel all-fiber method to generate sub-30 fs pulses at 1.3 μm using Cherenkov radiation from an Er-doped fiber laser.

Findings

Pulses below 40 fs across 1270-1315 nm range.

Achieved shortest pulse duration of 29 fs.

Generated pulses with multi-milliwatt average power.

Abstract

We have experimentally demonstrated the all-fiber generation of 1.3-{\mu}m femtosecond pulses via Cherenkov radiation (CR) from an ultrafast Er-doped fiber laser. The experiment shows that the pulses maintain below 40 fs in the range from 1270 to 1315 nm with multi-milliwatt average output power. The shortest generated pulses can be as short as 29 fs. This ultrashort pulse source in 1.3-{\mu}m window can bring the benefits to many fields such as the bio-imaging and the ultrafast spectroscopy, and so on.