Q-switched Thulium-doped fiber laser with Bismuth-doped fiber saturable absorber. (November 2019)

• Record Type: Journal Article
• Authors: Musa, B; Latiff, A A; Rusdi, M F M; Rahman, M F A; Zulkipli, N F; Samsamnun, F S M; Jafry, A A A; Harun, S W
• Is Part Of: Journal of physics. Volume 1371(2019)
• Publication Date: 2019-11
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/1371/1/012024
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: We demonstrate a passive Q-switched all-fiber ring configuration in thulium-doped fiber laser (TDFL) cavity using a bismuth-doped fiber (BDF) as a saturable absorber (SA). A piece of 20 cm long BDF was spliced and incorporated in the laser cavity for Q-switching pulse generation. By raising the pump power from 454 mW to 564 mW, the repetition rate of the laser is tunable within a range from 18.10 kHz to 25.22 kHz while the pulse width reduces from 9.04 µs to 6.98 µs. At maximum pump power, the Q-switched TDFL has output power, a slope efficiency, pulse energy and peak power of 5 mW, 3.53 %, 0.2 µJ and 28.40 mW, respectively.