Latiff, A A and Babar, I M and Shamsudin, H and Paul, Mukul Chandra and Halder, A and Das, S and Bhadra, Shyamal Kumar and Ahmad, H and Harun, S W
(2016)
Highly Efficient Cladding Pumped Dual-Wavelength Thulium Ytterbium Co-Doped Fiber Laser.
Acta Physica Polonica A, 130 (6).
pp. 1332-1335.
ISSN 1898-794X
Abstract
This paper describes the all-fiber dual-wavelength thulium ytterbium co-doped fiber laser by using a newly developed octagonal shaped double-clad thulium-ytterbium co-doped fiber as gain medium in conjunction with spatial filtering effect. The thulium ytterbium co-doped fiber laser operates at wavelengths of 1990.64 nm and 1998.92 nm with a signal to noise ratio of more than 34 dB as the 980 nm multimode pump power is increased above a threshold value of 1.5 W. The slope efficiency of the dual-wavelength laser is measured to be around 26.16%, which is comparable with the conventional thulium laser pumped by 800 nm single mode pump.
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