Optical and Judd‐Ofelt spectroscopic study of Er3+‐doped strontium gadolinium gallium garnet single‐crystal. Issue 3 (8th October 2018)

• Record Type: Journal Article
• Authors: Piao, Rui‐Qi; Wang, Yan; Zhang, Zi‐Bo; Zhang, Chao‐Yang; Yang, Xiao‐Fei; Zhang, De‐Long
• Is Part Of: Journal of the American Ceramic Society. Volume 102:Issue 3(2019)
• Page Start: 873
• Page End: 878
• Publication Date: 2018-10-08
• Subjects: Judd‐Ofelt parameters -- optical materials/properties -- single crystals -- spectroscopy; Ceramics -- Periodicals; 620.1405
• DOI: 10.1111/jace.16114
• Languages: English
• ISSNs: 0002-7820

Abstract

Abstract: Er 3+ ‐doped strontium gadolinium gallium garnet (SrGdGa3 O7 ) 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.