All-fibre dual-wavelength thulium-doped fibre laser based on spatial filtering effect

A. Eltaif, Tawfig Ahmad (2014) All-fibre dual-wavelength thulium-doped fibre laser based on spatial filtering effect. Ukrainian Journal of Physical Optics, 15 (2). pp. 79-83. ISSN 1816-2002

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Abstract

We report a room-temperature all-fibre dual-wavelength thulium-doped fibre laser that operates around 1900 nm and uses a spatial mode-beating filter in a ring configuration. By pumping the gain medium with an 800 nm laser and controlling the phase mismatch at the splicing points of a thulium-doped fibre, the two output lines are obtained at 1844.8 and 1852.0 nm, with the corresponding signal-to-noise ratios of 30 and 21 dB. The threshold pump power is 109.3 mW. At the maximum pump power of 131.7 mW, the output powers are 0.297 and 0.038 mW for the 1844.8 and 1852.0 nm laser lines, respectively.

Item Type: Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Engineering and Technology (FET)
Depositing User: Ms Suzilawati Abu Samah
Date Deposited: 07 May 2014 03:02
Last Modified: 21 Apr 2015 03:29
URI: http://shdl.mmu.edu.my/id/eprint/5479

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