Ghosh, Aditi and Roy, Arpita Sinha and Das Chowdhury, Sourav and Sen, Ranjan and Pal, Atasi (2016) All-fiber tunable ring laser source near 2 mu m designed for CO2 sensing. Sensors and Actuators B-Chemical, 235. pp. 547-553. ISSN 0925-4005

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A continuous-wave tunable thulium-doped all-fiber ring laser near 2 mu m under in-band pumping at 1.6 mu m has been demonstrated in the filterless configuration, specifically to act as a compact and simple laser source for gaseous carbon dioxide detection. The laser parameters suitable for tunable operation have been identified through numerical modelling and subsequent experimentation. A laser power of 8 mW with a tunable range of 36 nm (in between 1968 to 1932 nm) is demonstrated by intracavity loss variation. This laser configuration can be superior to the FBG-based configurations due to the possibility of a wider tuning range as compared to the latter. (C) 2016 Elsevier B.V. All rights reserved.

Item Type: Article
Subjects: Processing Science
Divisions: Fiber Optics and Photonics
Depositing User: Bidhan Chaudhuri
Date Deposited: 02 Dec 2016 07:20
Last Modified: 02 Dec 2016 07:20

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