Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8145611 | Infrared Physics & Technology | 2018 | 5 Pages |
Abstract
In this work, we focused on the possibility of obtaining intense and wide emission in the mid-infrared spectral range. The bismuth-germanate oxide glasses have been co-doped with erbium, holmium and ytterbium ions. Glasses have been synthesized in terms of high mid-infrared transmittance and low hydroxides content using low vacuum atmosphere (50-70â¯mBar). In order to maximize the mid-infrared luminescence, optimization of the rare earth ions content has been conducted. The highest emission intensity in the mid-IR has been observed in sample co-doped with molar concentration 0.1 Ho2O3/0.7 Er2O3/0.25 Yb2O3 under 980â¯nm laser diode excitation. Moreover, rare earth ions system enables to observe broadband mid-infrared luminescence in the range of 2.7-2.9â¯Î¼m due to the energy transfer and emission band overlap phenomena. Furthermore, wide emission band (FWHMâ¯=â¯193â¯nm) and high energy transfer efficiency (ηâ¯=â¯66.84%) from Yb3+ to Er3+ and Ho3+ ions are favorable from the perspective of further applications in mid-infrared fiber amplifiers and lasers.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Atomic and Molecular Physics, and Optics
Authors
Tomasz Ragin, Agata Baranowska, Marta SoÅtys, Agata Górny, Marcin Kochanowicz, Jacek Zmojda, Piotr Miluski, Renata Jadach, Dominik Dorosz,