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10 November 2003 Variable time constant of erbium-doped temperature sensor
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We study the feasibility of using decay-time measurements in order to develop a temperature sensor superior to the intensity-based one. We measured the fluorescence output of erbium-doped silica fiber segment upon pumping with 980-nm radiation. For low pumping powers (from 4 mW to 10 mW, in our case), the fluorescence power increases rapidly with pumping power. At an intermediate pumping power that depends on fiber dopant concentration and fiber geometry, the fluorescence power starts to saturate, approaching asymptotically the saturation value. We also report that the time constant of transition from excited level 4I13/2 to ground level 4I15/2 depends on the pumping power.
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Gonzalo Paez, Victor Lopez, and Marija Strojnik "Variable time constant of erbium-doped temperature sensor", Proc. SPIE 5152, Infrared Spaceborne Remote Sensing XI, (10 November 2003);

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