Passively Q-switched Erbium doped fiber laser by incorporating a segment of Thulium doped fiber saturable absorber. (January 2019)

• Record Type: Journal Article
• Authors: Rahman, M F A; Rusdi, M F M; Latiff, A A; Hisyam, M B; Dimyati, K; Harun, S W
• Is Part Of: Journal of physics. Volume 1151(2019)
• Publication Date: 2019-01
• Subjects: 1.5 μm fiber laser -- Q-switched laser -- fiber saturable absorber; Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/1151/1/012010
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: We propose a segment of 11 cm long Thulium-doped fiber (TDF) as a passive saturable absorber (SA) in generating a stable Q-switched Erbium-doped fiber laser (EDFL). The obtained pulsed laser has a central wavelength of 1560 nm and emerges stably within a repetition rate range of 54.1-106.7 kHz over a pump power range of 35-136 mW. At the maximum pump power of 136 mW, the EDFL produces a maximum output power of 14.3 mW, a maximum pulse energy of 134.7 nJ and a maximum peak power of 41 mW as well as the narrowest pulse width of 3.28 µs. The fundamental frequency of the pulsed laser has a signal to noise ratio (SNR) of approximately 63 dB. The proposed laser would have a good prospect for material processing and medicine.