Title
Spectral characteristics of Er3+ doped magnesium zinc sulfophosphate glasses
Author
F. Ahmadi, R. Hussin, S.K. Ghoshal
Year
2017
Journal
Journal of Alloys and Compounds
Abstract
This paper evaluates the spectroscopic properties of the Erbium (Er3+) ions doped magnesium zinc sulfophosphate glass system synthesized via melt-quenching method. Prepared glass samples are characterized using UV–Vis–NIR absorption and photoluminescence (PL) spectroscopy to determine the Er3+ ions concentration dependent spectral characteristics. The absorption spectra displayed nine prominent absorption bands aroused from the ground state (4I15/2) to the excited state (4I13/2, 4I11/2, 4I9/2, 4F9/2, 2H11/2, 4F7/2, 4F3/2, 2H9/2 and 4G11/2) transitions of Er3+ ion. The intensity parameters (View the MathML source) and radiative properties associated to the spectral transitions of Er3+ ion are calculated using Judd-Ofelt (JO) expressions. Room temperature PL spectra revealed two significant emission bands centered at 541 and 654 nm. Appearance of luminescence intensity quenching beyond 1 mol% of Er3+ is attributed to the cross-relaxation mechanism. The value of stimulated emission cross-section for 4S3/2→4I15/2 spectroscopic transition in Er3+ ion is found to be very high (85.8211 ×10−22 cm2). Present glass composition is demonstrated to be advantageous for various photonic applications.
Instrument
FP-8500
Keywords
Fluorescence, Photoluminescence, Quenching, Optical properties, Materials