Influence of Er.sup.3+./sup. concentration in Er:GGAG crystal on spectroscopic and laser properties

0569729 - FZÚ 2024 RIV NL eng J - Journal Article
Švejkar, R. - Šulc, J. - Boháček, Pavel - Němec, M. - Jelínková, H. - Trunda, Bohumil - Havlák, Lubomír - Nikl, Martin - Jurek, Karel
Influence of Er³⁺ concentration in Er:GGAG crystal on spectroscopic and laser properties.
Journal of Alloys and Compounds. Roč. 941, Apr. (2023), č. článku 168964. ISSN 0925-8388. E-ISSN 1873-4669
Institutional support: RVO:68378271
Keywords : erbium * solid-state lasers * mid-infrared lasers * mixed-garnet * GGAG * Er:GGAG
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 6.2, year: 2022
Method of publishing: Open access

Detail spectroscopy study of erbium-doped active media is crucial for understanding of the behavior of erbium-based lasers. In this paper, for the first time, detailed study of the concentration dependence of Er3+ in garnet-based active media is presented. Wide range of novel samples Er:GGAG (26 in total) with various Er3+ concentration (0.5–38 at%), were investigated for the first time. The complete spectroscopy (absorption and emission cross-section, Raman, mid- and far-infrared transmission spectra, decay times at 4I11∕2 and 4I13∕2) together with Judd-Ofelt analysis and laser characteristics were measured at room temperature. Results shows strong dependence of the first excited state (4I13∕2) on concentration, on the other hand, the 4I11∕2 level is completely independent of the erbium doping level. The Judd-Ofelt analysis show that erbium doping has minimal effect on the structural properties of Er:GGAG.
Permanent Link: https://hdl.handle.net/11104/0342055