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Mechanisms of nonlinear optical absorption in (GeO2)1-x--(PbF2)x (0.1 ≤ x ≤ 0.3) modified germanate glasses       
Yazarlar
Bekir Asilcan Ünlü
Türkiye
Prof. Dr. Gökhan BİLİR Prof. Dr. Gökhan BİLİR
Kafkas Üniversitesi, Türkiye
Mustafa Yüksek
İskenderun Teknik Üniversitesi, Türkiye
Ahmet Karatay
Ankara Üniversitesi, Türkiye
Elif Yıldız
Ankara Üniversitesi, Türkiye
Ayhan Elmalı
Ankara Üniversitesi, Türkiye
Özet
The structural, optical, and nonlinear absorption properties of (GeO2)1-x–(PbF2)x (0.1 ≤ x ≤ 0.3) glasses synthesized by conventional melting and quenching technique were investigated. Bandgap energies and Urbach energies were calculated by evaluating the linear absorption spectra. The increase in the PbF2 content resulted in 0.51 eV increase in bandgap energy and 0.28 eV decrease in Urbach energy. Z-scan experiment were performed to investigate nonlinear absorption properties, and a theoretical model including the contribution of one photon absorption, two photon absorption, excited state absorption, and saturable absorption to nonlinear absorption was considered in the evaluation of the experimental data. Although the highest effective nonlinear absorption coefficient was found with the highest PbF2 content due to the smallest bandgap energy, the highest downtrend in effective nonlinear absorption coefficients was also found for highest PbF2 content due to the smallest Urbach energy.
Anahtar Kelimeler
Germanate glasses | Nonlinear absorption | Urbach energy | Z-scan technique
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı OPTICAL MATERIALS
Dergi ISSN 0925-3467
Dergi Tarandığı Indeksler SCI-Exp, SCOPUS, Curation, Current Contents Engineering Computing & Technology, Current Contents Physical Chemical & Earth Sciences, Essential Science Indicators, Pdf2xml, Pdf2xml, Reference Master, Sophia
Dergi Grubu Q2
Makale Dili İngilizce
Basım Tarihi 09-2022
Cilt No 131
Sayı 1
Sayfalar 112758 / 0
Doi Numarası 10.1016/j.optmat.2022.112758
Makale Linki http://dx.doi.org/10.1016/j.optmat.2022.112758