NDLI: Thulium Bismuth Co-Doped Fiber Lasers at 1901 nm by 802 nm Pumping

Content Provider	IEEE Xplore Digital Library
Author	Halder, A. Saidin, N. Zen, D.I.M. Damanhuri, S.S.A. Harun, S.W. Ahmad, H. Dimyati, K. Paul, M.C. Das, S. Bhadra, S.K.
Copyright Year	1995
Abstract	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 0.4 m 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 52.7 mW is achieved at the pump power of 195 mW.
Sponsorship	IEEE Lasers and Electro-Optics Society
Starting Page	132
Ending Page	137
Page Count	6
File Size	523670
File Format	PDF
ISSN	1077260X
Volume Number	20
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Laser excitation Pump lasers Fiber lasers Bismuth Ions Optical fiber amplifiers Power lasers laser Chemical laser Fabry–Perot resonators
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Electrical and Electronic Engineering

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