- By:
- Wu, Hongrui ; Dodson, Adam D; Al-Wahish, Amal B; O'Hara, Andrew; Rai, Anuruddh; Posadas, Agham; Wang, Yongqiang; Lawrie, Benjamin J; Titze, Michael ; Davidson, James; Hmelo, Anthony; Demkov, A; Varga, Kalman; Feldman, Leonard; Tolk, Norman
- Journal Name:
- Applied Physics Letters
- Page Number:
- 231102
- Volume:
- 126
- Publication Date:
- June 10, 2025
- View DOI Listing:
- https://doi.org/10.1063/5.0264573
Abstract
We report observations of crystal defect induced modifications in the laser-excited Er3+ photoluminescence spectra of single-crystal Er2O3 thin films. These include marked enhancement of transition intensities known to be weak or nonexistent in as-grown samples. In this Letter, we examine the temperature and defect density dependence of the measurements and suggest photophysical processes that may account for these unexpected results.
