Enhancement of thulium– ytterbium doped fiber laser efficiency using dual-pumping method

Saidin, Norazlina and Harun, S. W. and Saidin, N (2015) Enhancement of thulium– ytterbium doped fiber laser efficiency using dual-pumping method. Microwave and Optical Technology Letters, 57 (2). pp. 285-287. ISSN 0895-2477

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Abstract

Performance enhancement of laser acquired from a newly developed double-clad Yb31/Tm31 codoped fiber (YTDF) is demonstrated using dual-pumping scheme. The laser uses a 2 m long YTDF fiber with a core dopant concentrations (in wt%) of 2.00 Yb2O3, 0.5 Tm2O3, 1.0 Al2O3, and 3.00 Y2O3 as a gain medium in conjunction with a pair of fiber Bragg grating in a linear cavity resonator to generate lasing at 1901.6 nm. The best efficiency of 2.9% and the highest output power of 27 mW are obtained by combining 927 nm pump with 905 nm pump. As compared to a single pumping scheme using 927 nm pumping source, about 0.43% increment in efficiency is observed with no evidence of rollover at the highest output power. The best combination is to use 200 mW of 800 nm pump with 927 nm pump, wherein only a total pump power of 1900 mW is required to generate 20 mW of 1.9 lm laser output.

Item Type:	Article (Journal)
Additional Information:	5653/49302
Uncontrolled Keywords:	Yb31/Tm31 codoped fiber; 2-lm fiber laser; cladding pumping; dual-pumping method
Subjects:	Q Science > QC Physics T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7800 Electronics. Computer engineering. Computer hardware. Photoelectronic devices
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Electrical and Computer Engineering
Depositing User:	Norazlina Saidin
Date Deposited:	28 Jan 2016 02:02
Last Modified:	28 Jan 2016 02:02
URI:	http://irep.iium.edu.my/id/eprint/49302

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