Chinese Optics Letters, 2018, 16 (2): 020014, Published Online: Jul. 16, 2018
Tunable passively Q -switched ytterbium-doped fiber laser with mechanically exfoliated GaSe saturable absorber
Abstract
A tunable passively Q -switched ytterbium-doped fiber laser using few-layer gallium selenide (GaSe) as a saturable absorber (SA) is demonstrated. The few-layer GaSe SA, which is fabricated by the mechanical exfoliation method, is able to generate a Q -switched fiber laser that has a maximum repetition rate of 92.6 kHz and a minimum pulsed width of 2.3 μs. The highest pulse energy exhibited by the generated pulse is 18.8 nJ with a signal to noise ratio of ~ 40 dB . The tunability of the proposed laser covers from 1042 to 1082 nm, giving a tuning range of 40 nm.
H. Ahmad, S. N. Aidit, S. I. Ooi, Z. C. Tiu. Tunable passively