%0 Journal Article
%T Fluoroindate Glass Co-Doped with Yb3+/Ho3+ as a 2.85 μm Luminescent Source for MID-IR Sensing.
%A Kochanowicz M
%A Zmojda J
%A Baranowska A
%A Kuwik M
%A Starzyk B
%A Lesniak M
%A Miluski P
%A Pisarski WA
%A Pisarska J
%A Dorosz J
%A Ferrari M
%A Dorosz D
%J Sensors (Basel)
%V 21
%N 6
%D Mar 2021 19
%M 33808602
%F 3.847
%R 10.3390/s21062155
%X This work reports on the fabrication and analysis of near-infrared and mid-infrared luminescence spectra and their decays in fluoroindate glasses co-doped with Yb3+/Ho3+. The attention has been paid to the analysis of the Yb3+→ Ho3+ energy transfer processed ions in fluoroindate glasses pumped by 976 nm laser diode. The most effective sensitization for 2 μm luminescence has been obtained in glass co-doped with 0.8YbF3/1.6HoF3. Further study in the mid-infrared spectral range (2.85 μm) showed that the maximum emission intensity has been obtained in fluoroindate glass co-doped with 0.1YbF3/1.4HoF3. The obtained efficiency of Yb3+→ Ho3+ energy transfer was calculated to be up to 61% (0.8YbF3/1.6HoF3), which confirms the possibility of obtaining an efficient glass or glass fiber infrared source for a MID-infrared (MID-IR) sensing application.