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Thulium bismuth co-doped fiber lasers at 1901 nm by 802 nm pumping

Halder, Arindam and Saidin, Norazlina and Harun, Sulaiman Wadi and Ahmad, Harith and Paul, Mukul Chandra and Dimyati, Kaharudin and Das, Shyamal and Bhadra, S.K and Zen, D.I.M and Damanhuri, S.S.A (2014) Thulium bismuth co-doped fiber lasers at 1901 nm by 802 nm pumping. IEEE Journal of Selected Topics in Quantum Electronics, 2 (5). ISSN 1077-260X

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We demonstrate an efficient fiber laser operating at 1901.6 nm using a new Thulium Bismuth co-doped fiber (TBF) under 802 nm pumping. The TBF was fabricated using modified chemical vapor deposition process associated with optimized solution doping techniques. The TBF lasers at 1901.6 nm are obtained at a noticeably low threshold pump power of 75–92 mW using two fiber Bragg gratings in a Fabry–Perot cavity. The highest efficiency of 42.2% is achieved using a 0.4m long TBF fiber with a core dopant concentrations (in wt%) of 0.35 Bi2O3 , 0.9 Tm2O3 , 3.0 Al2O3 and 4.0 GeO2 . Compared to the laser from a commercially available Thulium-doped fiber, the proposed laser has a significantly higher efficiency and lower threshold pump power. This is attributed to the incorporation of Bi ions in the gain medium which helps to increase the 3F4 population through energy transfer processes. The maximum output power of 52.7mWis achieved at the pump power of 195 mW.

Item Type: Article (Journal)
Additional Information: 5653/41542
Uncontrolled Keywords: Chemical laser, Fabry–Perot resonators, laser
Subjects: 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 Mechatronics Engineering
Depositing User: Norazlina Saidin
Date Deposited: 13 Feb 2015 09:58
Last Modified: 02 Nov 2017 09:59
URI: http://irep.iium.edu.my/id/eprint/41542

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