Fluoroindate Glass Co-Doped with Yb3+/Ho3+ as a 2.85 μm Luminescent Source for MID-IR Sensing

Marcin Kochanowicz; Jacek Zmojda; Agata Baranowska; Marta Kuwik; Bartłomiej Starzyk; Magdalena Lesniak; Piotr Miluski; Wojciech A Pisarski; Joanna Pisarska; Jan Dorosz; Maurizio Ferrari; Dominik Dorosz

doi:10.3390/s21062155

Fluoroindate Glass Co-Doped with Yb³⁺/Ho³⁺ as a 2.85 μm Luminescent Source for MID-IR Sensing

Sensors (Basel). 2021 Mar 19;21(6):2155. doi: 10.3390/s21062155.

Affiliations

¹ Department of Power Engineering, Photonics and Lighting Technology, Bialystok University of Technology, 45D Wiejska Street, 15-351 Bialystok, Poland.
² Institute of Chemistry, University of Silesia, 9 Szkolna Street, 40-007 Katowice, Poland.
³ Faculty of Materials Science and Ceramics, AGH University of Science and Technology, 30 Mickiewicza Av., 30-059 Krakow, Poland.
⁴ IFN-CNR CSMFO Lab. and FBK Photonics Unit, via alla Cascata 56/C Povo, 38123 Trento, Italy.

Abstract

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.

Keywords: CO2 sensing; Yb3+/Ho3+; fluoroindate glass; luminescence MID-IR.

Grants and funding

2017/25/B/ST8/02530/Narodowe Centrum Nauki