Mechanisms of nonlinear optical absorption in (GeO2)1-x--(PbF2)x (0.1 ≤ x ≤ 0.3) modified germanate glasses
      
Yazarlar (6)
Bekir Asilcan Unlu Ankara Üniversitesi, Türkiye
Prof. Dr. Gökhan BİLİR Kafkas Üniversitesi, Türkiye
Mustafa Yuksek Iskenderun Technical University, Türkiye
Ahmet Karatay Ankara Üniversitesi, Türkiye
Elif Akhuseyin Yildiz Ankara Üniversitesi, Türkiye
Ayhan Elmali Ankara Üniversitesi, Türkiye
Makale Türü Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı Optical Materials (Q2)
Dergi ISSN 0925-3467 Wos Dergi Scopus Dergi
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
Makale Dili İngilizce Basım Tarihi 09-2022
Cilt / Sayı / Sayfa 131 / 1 / 112758–0 DOI 10.1016/j.optmat.2022.112758
Makale Linki http://dx.doi.org/10.1016/j.optmat.2022.112758
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