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Optical and Judd‐Ofelt spectroscopic study of Er 3+ ‐doped strontium gadolinium gallium garnet single‐crystal
Author(s) -
Piao RuiQi,
Wang Yan,
Zhang ZiBo,
Zhang ChaoYang,
Yang XiaoFei,
Zhang DeLong
Publication year - 2019
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.16114
Subject(s) - gadolinium gallium garnet , crystal (programming language) , absorption spectroscopy , analytical chemistry (journal) , strontium , materials science , gadolinium , doping , attenuation coefficient , luminescence , gallium , oscillator strength , single crystal , chemistry , optics , spectral line , crystallography , optoelectronics , physics , epitaxy , organic chemistry , layer (electronics) , chromatography , computer science , metallurgy , composite material , programming language , astronomy
Er 3+ ‐doped strontium gadolinium gallium garnet (SrGdGa 3 O 7 ) single‐crystal was grown by Czochralski method. The Er 3+ concentration in the crystal was determined as 4.2 × 10 21 ions/cm 3 by inductively coupled plasma atomic absorption spectroscopy. Refractive index of the crystal was measured at the wavelengths of 633, 1311 and 1553 nm by prism coupling technique. The results show that the crystal is a positive uniaxial crystal with a birefringence of ~0.01, and the Sellmeier equation reported previously for the crystal doped with Nd 3+ is also valid for the one doped with Er 3+ . Unpolarized absorption spectrum of the crystal was measured at room temperature and the Er 3+ absorption cross‐section spectrum was calibrated from it. The Er 3+ spectroscopic properties were studied by Judd‐Ofelt theory. Some fundamental spectroscopic parameters were obtained that include absorption coefficient and cross‐section spectral distributions, electronic transition oscillator strength, Judd‐Ofelt parameters, fluorescence branch ratio, transition probability, radiative and fluorescence lifetimes, and quantum efficiency.