Modified Judd--Ofelt method for analysis of optical transition intensities of rare earth ions
Dukin A. A.1
1Ioffe Institute, St. Petersburg, Russia
Email: dookin@gvg.ioffe.ru
A modification of the Judd-Ofelt method for analyzing the spectra of rare-earth ions is proposed. It consists in the transition from considering the absolute oscillator strengths of transitions to the oscillator strengths of transitions normalized to the oscillator strength of the reference transition, which contains a significant magnetic dipole component. Due to the presence of the magnetic dipole component, it becomes possible to carry out the Judd-Ofelt analysis without knowing the concentration of optically active ions of the rare-earth element in the sample and the sample thickness. The proposed method is used to analyze the absorption spectrum of LiNbO3 doped with Er3+. Keywords: modified Judd-Ofelt method, rare earth elements, erbium, LiNbO3.
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