Response of 1.6 μm Er:Y3Al5O12 fiber-optic temperature sensor up to 1520 K
1999; American Institute of Physics; Volume: 74; Issue: 23 Linguagem: Inglês
10.1063/1.124123
ISSN1520-8842
AutoresDaemeon M. Henry, J. H. Herringer, N. Djeu,
Tópico(s)Solid State Laser Technologies
ResumoFiber-optic temperature sensors based on fluorescence decay of the 1.6 μm transition in Er:Y3Al5O12 (Er:YAG) have been operated up to 1520 K. The probes are of a monolithic construction consisting of a single-crystal YAG lead fiber and an Er:YAG tip. The temperature-dependent fluorescence decay data show the dominance of the phonon mode at 220 cm−1 in mediating multiphonon relaxation in YAG at high temperatures. Such a sensor was used in the direct measurement of temperature in the interior of molten aluminum.
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