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Highly Efficient Cladding Pumped Dual-Wavelength Thulium Ytterbium Co-Doped Fiber Laser

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Latiff A. A., Babar I., Shamsudin H., Paul M., Halder A., Das S., Bhadra S., Ahmad H., Harun S.

Acta Physica Polonica A

2016

vol. 130

issue 6

1332-1335

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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1 Acta Physica Polonica A

1 2016

1 Ahmad H.

1 Babar I.

1 Bhadra S.

1 Das S.

1 Halder A.

1 Harun S.

1 Latiff A. A.

1 Paul M.

1 Shamsudin H.

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Highly Efficient Cladding Pumped Dual-Wavelength Thulium Ytterbium Co-Doped Fiber Laser