Abstract
We demonstrate a 1.5 GHz harmonic mode-locked erbium-doped fiber
laser by incorporating gold nanofilm as a saturable absorber (SA). The
high-quality gold nanofilm SA fabricated by the physical vapor
deposition method possesses a high modulation depth of 12.9%
and a low saturation intensity of 1.69 MW/cm2 at
1.56 µm, facilitating the generation of harmonic
mode-locking. The fundamental mode-locked operation was obtained at
1564.7 nm, with a pulse duration of 586 fs and a repetition
rate of 34.235 MHz. At the pump power of 610 mW,
44th-order harmonic mode-locking with a repetition rate of
1.506 GHz was achieved, which is the highest yet reported in
mode-locked fiber lasers using gold nanomaterials as SAs. Moreover,
the gold nanofilm-based harmonic mode-locked fiber laser shows
relatively high signal-to-noise ratios, high output power, and good
stability. These results highlight the advantage of the gold
nanofilm-based SA in realizing high repetition rate laser sources.
Funder
National Key Research and Development
Program of China
National Natural Science Foundation of
China
the Opened Fund of the State Key
Laboratory of Integrated Optoelectronics
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献