Mid-infrared luminescence properties of erbium and dysprosium doped lanthanum titanate glasses
Abstract
Glasses of composition xRE2O3-(17−x) La2O3-83 TiO2 were prepared by levitation melting from x = 0.1 to 9 for RE=Er and at x =0.1 and 1 for RE=Dy. The glasses have high transition temperature, exhibit low OH, and 1 mm thick discs are transparent out to 6 μm. Mid-infrared emission lineshapes and lifetimes are comparable to what is seen in tellurite glasses containing Er3+ and Dy3+. For x fixed at 1, the Er3+:4I11/2 → 4I13/2 transition at 2716 nm has a fluorescence lifetime of 254 μs and the Dy3+:6H13/2 → 6H15/2 transition at 2957 nm has a fluorescence lifetime of 9.09 μs. The results indicate that doped lanthanum titanate glasses offer the thermal stability of a ’hard’ glass with the host properties typically associated with ’soft’ glasses. Problems with the measurement of spectral features in the mid-infrared that could erroneously be assigned as resulting from rare-earth ion emissions are presented and discussed.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Sep 25, 2023
- Source ID
- 10.1364/ome.503121
Entities
People
- Abdulrahman Alrubkhi
- Alexander Neumann
- Arash Mafi
- Brian Topper
- Doris Möncke
- Michael Pettes
- Richard Weber
- Stephen K. Wilke
- Vrishank Menon
Organizations
- Air Force Research Laboratory
- Alfred University
- Center for Integrated Nanotechnologies
- National Aeronautics and Space Administration
- United States Department of Energy
- University of Kansas
- University of New Mexico