Optical absorption and emission properties of Nd3 in TeO2 WO3 and TeO2 WO3 CdO glasses
Yazarlar (4)
Prof. Dr. Gökhan BİLİR Kafkas Üniversitesi, Türkiye
Gönül Eryürek İstanbul Teknik Üniversitesi, Türkiye
Şebnem Budak Türkiye
Fadime Kıran Türkiye
| Makale Türü | Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale) | ||
| Dergi Adı | Physica B: Condensed Matter (Q4) | ||
| Dergi Tarandığı Indeksler | SCI-Expanded | ||
| Makale Dili | İngilizce | Basım Tarihi | 11-2011 |
| Cilt / Sayı / Sayfa | 406 / 21 / 4007–4013 | DOI | – |
| 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 0.25eV as the WO3 content in the binary glasses decreased from 20.0 to 10.0mol% while the optical band gap of the same glasses did not show an appreciable dependence on the glass composition. Judd–Ofelt (Ωt) parameters were calculated from the optical absorption spectra measured at room temperature. In all the glasses the J–O parameters follow the same trend as Ω2>Ω6>Ω4. The J–O 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 … |
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