Optical absorption and emission properties of Nd3+ in TeO2-WO3 and TeO2-WO3-CdO glasses
Yazarlar (2)
Prof. Dr. Gökhan BİLİR Kafkas Üniversitesi, Türkiye
G. Ozen
İstanbul Teknik Üniversitesi, Türkiye
Makale Türü Özgün Makale (ESCI dergilerinde yayınlanan tam makale)
Dergi Adı Physica B Condensed Matter
Dergi ISSN 0921-4526 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Exp, SCOPUS, Curation, Current Contents Physical Chemical & Earth Sciences, Essential Science Indicators, Pdf2xml, Pdf2xml, Reference Master, Sophia
Makale Dili İngilizce Basım Tarihi 11-2011
Cilt / Sayı / Sayfa 406 / 21 / 4007–4013 DOI 10.1016/j.physb.2011.07.010
Makale Linki http://www.scopus.com/inward/record.url?eid=2-s2.0-80052845466&partnerID=MN8TOARS
UAK Araştırma Alanları
Optik, Fotonik, Fiber Optik
Özet
Effects of WO3 and CdO on the spectroscopic properties of Nd3 doped tellurite glasses were investigated. The optical band gaps and Urbach energies of the samples were determined using the dependence of the absorption coefficient on the photon energy. The Urbach energies were found to vary from 0.18 to 0.25 eV as the WO3 content in the binary glasses decreased from 20.0 to 10.0 mol% while the optical band gap of the same glasses did not show an appreciable dependence on the glass composition. JuddOfelt (Ωt) parameters were calculated from the optical absorption spectra measured at room temperature. In all the glasses the JO parameters follow the same trend as Ω2>Ω6>Ω 4. The JO intensity parameters were used to compute the radiative properties such as the radiative transition probabilities (Aed), branching ratios (β) and radiative lifetimes (τr) for all the possible fluorescence bands. The fluorescence spectra obtained upon 805.2 nm excitation exhibited an intense emission band centered at 1064 nm ( 4F3/2→4I11/2) and two weak bands at 910 nm (4F3/2→4I9/2), and 1340 nm (4F3/2→4I13/2). The stimulated emission cross-section for the 1064 nm emission was determined using the emission spectra. The highest gain bandwidth (σ e×ΔλP) was determined to be 155.4 for the 0.79TeO20.15WO30.05CdO ternary glass composition, which could be more useful as promising material for the design and development of fiber amplifiers and lasers. © 2011 Elsevier B.V. All Rights Reserved.
Anahtar Kelimeler
JuddOfelt parameters | Oscillator strengths | Radiative properties | Tellurite glasses
Science Direct
BM Sürdürülebilir Kalkınma Amaçları
Atıf Sayıları
Scopus 16
Optical absorption and emission properties of Nd3+ in TeO2-WO3 and TeO2-WO3-CdO glasses

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İletişim
  • Kafkas Üniversitesi Rektörlüğü (36100) Merkez / KARS
  • unis@kafkas.edu.tr 4742251150 (474)225-1160
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