Tunable and efficient diode-pumped Tm3+-doped fluoride fiber laser for hydrocarbon gas sensing

Fergal J. McAleavey; Brian D. MacCraith; James O'Gorman; John Hegarty

doi:10.1117/12.260604

10 December 1996 Tunable and efficient diode-pumped Tm³⁺-doped fluoride fiber laser for hydrocarbon gas sensing

Fergal J. McAleavey, Brian D. MacCraith, James O'Gorman, John Hegarty

Proceedings Volume 2836, Chemical, Biochemical, and Environmental Fiber Sensors VIII; (1996) https://doi.org/10.1117/12.260604
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

The operation of an efficient cw thulium-doped fiber laser emitting at wavelength, lambda equals 2.31 micrometer is reported. The operation of the fiber laser is optimized with a view to producing a small and efficient laser source for optical absorption based gas sensing. A 2 mW output power combined with a high slope efficiency make this fiber laser a useful source for sensing spectroscopic based hydrocarbon gases which absorb at lambda equals 2.3 micrometer. A lower limit of detection of 1000 ppm meters for methane is routinely demonstrated using an unoptimized laser system. The tunability of the fiber laser has also been investigated in order to target specific hydrocarbon absorption features.

Citation Download Citation

Fergal J. McAleavey, Brian D. MacCraith, James O'Gorman, and John Hegarty "Tunable and efficient diode-pumped Tm³⁺-doped fluoride fiber laser for hydrocarbon gas sensing", Proc. SPIE 2836, Chemical, Biochemical, and Environmental Fiber Sensors VIII, (10 December 1996); https://doi.org/10.1117/12.260604

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