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Nanosecond passively Q-switched fibre laser using a NiS2 based saturable absorber

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journal contribution
posted on 2019-07-12, 08:36 authored by Shi Li, Yu Yin, Qiuyun Ouyang, Guicang Ran, Yujin Chen, ELFED LEWISELFED LEWIS, Gerald Farrell, Masaki Tokurakawa, Sulaiman Wadi Harun, Pengfei Wang
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

Language

English

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