Applied Physics B

, Volume 88, Issue 2, pp 297–303

Temperature sensors and optical sensors


DOI: 10.1007/s00340-007-2717-4

Cite this article as:
Rai, V. Appl. Phys. B (2007) 88: 297. doi:10.1007/s00340-007-2717-4


The dependence of temperature on the fluorescence lifetime and fluorescence intensity ratio using Stark sublevels and thermally coupled (close lying) levels in triply ionized rare earth ions, doped into a variety of glasses and fibers, have been reviewed. Also, it is claimed that not only for the two closely lying levels of triply ionized rare earth ion of the same kind, but also for two different triply ionized rare earth ions, having their excited levels very close to each other, may be used to monitor the temperature.

Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  1. 1.Departamento de FísicaUniversidade Federal de PernambucoRecifeBrasil