LiNbO3–Yb3+ crystal as a material for optical temperature sensor
- Authors: Demirkhanyan H.G.1, Demirkhanyan G.G.1,2, Kokanyan E.P.1,2
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Affiliations:
- Armenian State Abovyan Pedagogical University
- Institute for Physical Research, NAS of Armenia
- Issue: Vol 52, No 4 (2017)
- Pages: 381-386
- Section: Article
- URL: https://journals.rcsi.science/1068-3372/article/view/228527
- DOI: https://doi.org/10.3103/S1068337217040119
- ID: 228527
Cite item
Abstract
The method of optical determination of temperature based on cooperative luminescence in the LiNbO3 crystals doped with rare earth ions is proposed. As a temperature-dependent measurable characteristic, the quantum yield of luminescence is considered taking into account the processes of nonradiative redistribution of the electron excitation energy in the impurity subsystem. It is shown that the LiNbO3–Yb3+ crystals can be used as a material for optical temperature sensors in the temperature range of 200–500 K with the average sensitivity of 0.12%K–1.
About the authors
H. G. Demirkhanyan
Armenian State Abovyan Pedagogical University
Author for correspondence.
Email: demirkhanyan.hasmik@aspu.am
Armenia, Yerevan
G. G. Demirkhanyan
Armenian State Abovyan Pedagogical University; Institute for Physical Research, NAS of Armenia
Email: demirkhanyan.hasmik@aspu.am
Armenia, Yerevan; Ashtarak
E. P. Kokanyan
Armenian State Abovyan Pedagogical University; Institute for Physical Research, NAS of Armenia
Email: demirkhanyan.hasmik@aspu.am
Armenia, Yerevan; Ashtarak