Ytterbium doped fiber saturable absorber for a stable passively Q-switched fiber laser in the 1-micron region. (January 2019)

• Record Type: Journal Article
• Authors: Rahman, M F A; Rusdi, M F M; Muhammad, A R; Latiff, A A; Ahmad, A; Dimyati, K; Harun, S W
• Is Part Of: Journal of physics. Volume 1151(2019)
• Publication Date: 2019-01
• Subjects: 1 μm fiber laser -- Q-switched laser -- fiber saturable absorber; Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/1151/1/012008
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: In this paper, we experimentally demonstrate a stable passively Q-switched fiber laser in the 1-micron regime by incorporating a segment of Ytterbium-doped fiber (YDF, 12 cm) as a saturable absorber (SA) in a ring cavity scheme. The fiber SA exhibits a linear absorption of about 2.44 dB at the Q-switched oscillating regime (1068 nm). The Q-switched pulses started to self-occur as the pump power elevated to its threshold of 151 mW and steadily existed up to the maximum pump power of 233 mW. At the maximum pump power, we obtained a maximum repetition rate of 74.2 kHz, a maximum output power of 3.7 mW, a maximum pulse energy of 49 nJ and a pulse width as short as 1.97 µs. Our results denote that a segment of YDF is possible of generating a reliable Q-switched fiber laser in the 1-micron regime, revealing its potential as another fiber SA candidate.