Erbium doped gadolinium oxyorthosilicate powder for optical thermometry at the visible and near-infrared
Por:
Rakov, Nikifor, Maciel, Glauco S., Xiao, Mufei
Publicada:
1 dic 2022
Resumen:
Crystal growth and spectral analysis of erbium (Er3+) doped gadolinium
oxyorthosilicate (Gd2SiO5) have been studied especially for use this
system as a laser material and optical amplification exploring the
luminescence originating from the 4I13/2 -> 4I15/2 transition of Er3+
around 1.5 mu m. However, the study of Er3+:Gd2SiO5 for luminescence
thermometry has not been explored yet. In this work, thermometric
analysis based on lumines-cence intensity ratio (LIR) technique
involving excited state to ground state radiative electronic transitions
from thermally coupled levels 2H11/2 and 4S3/2 of Er3+ was investigated
and provided maximum absolute temperature sensitivity of -6 x 10-3 K-1
at -500 K. By using thermally coupled Stark sub-levels of states 2H11/2
and 4S3/2, a maximum absolute temperature sensitivity of about the same
magnitude (-5 x 10-3 K-1) was attained at a much lower temperature (-110
K). The thermometric analysis based on LIR technique involving the Stark
components of the 4I13/2 -> 4I15/2 transition of Er3+ around 1.5 mu m
was also investigated and it provided a relative sensitivity of -2 x
10-3 K-1 at 298 K. These results on the Stark components of the
luminescence of Er3+:Gd2SiO5 showed that this system may be suitable for
temperature sensing in a wide range of temperatures and wavelengths.
Filiaciones:
Rakov, Nikifor:
IPCM-Ciência Dos Materiais, Universidade Federal Do Vale Do São Francisco, BA, Juazeiro, 48902-300, Brazil
Univ Fed Vale Sao Francisco, IPCM Ciencia Mat, BR-48902300 Juazeiro, Ba, Brazil
Maciel, Glauco S.:
Instituto de Física, Universidade Federal Fluminense, RJ, Niterói, 24210-346, Brazil
Univ Fed Fluminense, Inst Fis, BR-24210346 Niteroi, RJ, Brazil
Xiao, Mufei:
Centro de Nanociencias y Nanotecnología, Universidad Nacional Autónoma de México, Baja California CP, Ensenada, 22860, Mexico
Univ Nacl Autonoma Mexico, Ctr Nanociencias & Nanotecnol, Ensenada 22860, Baja California, Mexico
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