Enhancement of optical telecommunication bands: Pr3+-doped halide phosphate glasses display broadband NIR photoluminescence emission / Bilel Charfi, Kamel Damak, Ramzi Maâlej, Mohammed S. Alqahtani, Khalid ... więcej

Enhancement of optical telecommunication bands: Pr3+-doped halide phosphate glasses display broadband NIR photoluminescence emission / Bilel Charfi, Kamel Damak, Ramzi Maâlej, Mohammed S. Alqahtani, Khalid I. Hussein, Ali M. Alshehri, Abdulrahman M. Hussain, Bozena Burtan-Gwizdala, Manuela Reben, El Sayed Yousef // Materials [Dokument elektroniczny]. – 2022, Vol. 15, Iss. 19, 14 s. : tab., wykr. – Tryb dostępu: https://www.mdpi.com/1996-1944/15/19/6518. – Oznaczenie ref./art.: 6518. – Bibliogr. 58 poz., Abstr. – Special Issue: Novel Optical and Photonic Glass-Based Materials: Synthesis, Characterization and Application. – doi: 10.3390/ma15196518. – ISSN 1996-1944

In the optical energy gap, visible and near-IR emission of halide phosphate glasses with a composition of 40P2O5 -30ZnO-20LiCl-10BaF2 in mol% doped with 3.5 × 104 ppm Pr2O3 , referred to as PZLBPr, were ... więcej

In the optical energy gap, visible and near-IR emission of halide phosphate glasses with a composition of 40P2O5 -30ZnO-20LiCl-10BaF2 in mol% doped with 3.5 × 104 ppm Pr2O3 , referred to as PZLBPr, were synthesized. The UV-VIS-NIR and spectroscopic properties of these glasses were also predicted. The current glasses had broadband emission photoluminescence covering a wavelength range of 1250 to 1700 nm when excited at 455 nm. These bands for near-infrared emission luminescence relate to the transitions 1G4 → 3H5 , 1D2 → 1G4 , and 3H4 → 3F3, 3F4 in the optical telecommunication window. The significant PL emission wideband was caused by the radiative transition from Pr3+: 1D2 to 1G4. At 445 nm excitation, these glasses exhibited emission bands that corresponded to blue/reddish orange spectral ranges in visible ranges. The prepared glass has a high lasing quality factor (Ω4/Ω6 = 0.9), high optical energy (4.72 eV), and quantum efficiency = 87.3% with FWHM = 156 nm of transition emission from the 1D2 → 1G4 level. As a result, broadband near infrared optical amplifiers can be fabricated from the prepared glasses.