Thermal, Optical, and Emission Traits of SM[sup.3+]-Ion-Doped Fluoride/Chloride/Oxide Glass for Red/Orange Laser Fiber Applications

• Published in: Fibers 2024-11, Vol.12 (11)
• Main Authors: Burtan-Gwizdala, Bozena, Cisowski, Jan, Lisiecki, Radoslaw, Kowalska, Kinga J, Jarzabek, Bozena, Nosidlak, Natalia, Reben, Manuela, Alshehri, Ali M, Hussein, Khalid I, Yousef, El Sayed
• Format: Article
• Language: English
• Subjects: Analysis; Composition; Equipment and supplies; Fiber optics; Glass; Properties; Refractive index
• ISSN: 2079-6439; 2079-6439
• DOI: 10.3390/fib12110100

This study examined spectroscopic, thermal, and other qualities, such as the lasing parameters, of Sm[sup.3+] -doped glass with the composition 40P[sub.2] O[sub.5] –30ZnO–20LiCl–10BaF[sub.2] . The ellipsometric data were used in a Sellmeier dispersion relation to estimate the refractive index values of the glasses investigated. The measured absorption spectra of the doped glass reveal the presence of various absorption bands assigned to transitions from the [sup.6] H[sub.5/2] ground state attributed to Sm[sup.3+] -ion-excited states. We studied the decay of the [sup.4] G[sub.5/2] level of the Sm[sup.3+] ions in the doped glass by analyzing its absorption and emission fluorescence spectra. The Judd–Ofelt hypothesis allowed us to determine that the quantum efficiency of the [sup.4] G[sub.5/2] –[sup.6] H[sub.7/2] transition is high: 96% and 97% for glass doped with 4.05 × 10[sup.19] ions/cm[sup.−3] and 11 × 10[sup.19] ions/cm[sup.−3] , respectively. Furthermore, this glass exhibits efficient red/orange enhanced spontaneous emission that matches the excitation band of the photosensitizer material used in medical applications.