Q-switched pulse laser generation is successfully demonstrated in both Erbiumdoped
fibre laser (EDFL) and Thulium-doped fibre laser (TDFL) cavities by employing
Nickel disulfide (NiS2) as a saturable absorber (SA). Q-switched pulse laser operation at 1.55 μm and 2.0 μm is obtained at low pump power levels of 37mW and 48mW,respectively. For the EDFL, stable passively Q-switched laser output at a wavelength of 1561.86 nm is achieved, with a minimum pulse duration of 237 ns and a repetition rate of 243.9 kHz. For the TDFL, the centre wavelength of the laser output is 1915.5 nm, with a minimum pulse duration of 505 ns and a repetition rate of 214.68 kHz. NiS2 is used as SA for Q-switched laser generation over a broadband wavelength for the first time.
History
Publication
Optics Express;27, 14 19843
Publisher
Optical Society of America
Note
peer-reviewed
Other Funding information
National Key R&D Program of China, Central Universities, Natural Science Foundation of Heilongjiang