Generation of sub-30 fs pulses from an erbium-doped fiber amplifier at 203 MHz repetition rate
Year: 2024
Type: article
Abstract: High repetition rate fiber lasers have attracted great attention in recent years due to their potential applications including spectroscopy and laser processing. In this manuscript, we have demon-strated sub-30 fs pulses directly from a compact Er-doped fiber laser amplifier system with a high repetition rate of ∼203 MHz. The design of the laser comprises of a home-built oscillator based on nonlinear polarization evolution mode-locking mechanism, an all-fiber amplifier, and a fiber type compressor. By optimizing the length of single mode fiber compressor, the shortest pulse duration of 26 fs is achieved, which is ∼4.9 optical cycle at 1570 nm. The average output power of the de-chirped pulse is 267 mW with corresponding pulse energy of 1.3 nJ. Such a high repetition rate fiber laser with few-cycle pulse holds tremendous potential for numerous applications that require high temporal resolution, and high photon flux.
Source: Laser Physics
Authors: Yuwei Zhao, Wanli Zhao, Tongyu Liu
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,165
OpenAlex ID: W4404141146