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Title: Structural and optical characterization of Er{sup 3+} doped zinc telluroborate glasses for green laser applications

A new series of Erbium doped Zinc telluroborate glasses were prepared by melt quenching technique. The stretching and bending vibrations of the B–O and Te–O bonds in the prepared glass network were explored through Raman spectra. The nature of the metal-ligand bond was determined using optical absorption spectra through Nephelauxetic ratio (β) and Bonding parameter (δ) studies. The Judd-Ofelt (JO) parameters (Ω{sub 2}, Ω{sub 4}, Ω{sub 6}) and the oscillator strengths were calculated following JO theory. The relatively higher Ω{sub 2} values reveal the higher asymmetry nature. The green emission corresponding to the {sup 2}H{sub 11/2}+{sup 4}S{sub 3/2}→{sup 4}I{sub 15/2} transition was observed at around 550 nm and the luminescence quenching occurs beyond 1.0 wt% of Erbium ion concentration. Radiative properties for the 1.0EZTB glass are found to be higher and its suitability towards green laser applications were discussed and reported.
Authors:
;  [1] ;  [2] ;  [3]
  1. Department of Physics, Gandhigram Rural Institute – Deemed University, Gandhigram – 624302 (India)
  2. Materials Science Group, Indira Gandhi Centre for Atomic Research, Kalpakkam–603102 (India)
  3. Radiological Safety Division, Indira Gandhi Centre for Atomic Research, Kalpakkam–603102 (India)
Publication Date:
OSTI Identifier:
22490364
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1665; Journal Issue: 1; Conference: 59. DAE solid state physics symposium 2014, Tamilnadu (India), 16-20 Dec 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION SPECTRA; BORATES; CHEMICAL BONDS; CONCENTRATION RATIO; DEUTERIUM; DOPED MATERIALS; ERBIUM; ERBIUM IONS; GLASS; LASER RADIATION; LIGANDS; LUMINESCENCE; OSCILLATOR STRENGTHS; QUENCHING; RAMAN SPECTRA; TELLURIUM COMPOUNDS; ZINC COMPOUNDS