Linear and nonlinear absorption,SHG and photobleaching behaviors of Dy doped GaSe single crystal |
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| Institution: | 1. Faculty of Science and Letters, Department of Physics, Kafkas University, 36100 Kars, Turkey;2. Faculty of Engineering, Department of Electrical and Electronical Engineering, Kafkas University, 36100 Kars, Turkey;3. Faculty of Engineering, Department of Engineering Physics, Ankara University, 06100 Ankara, Turkey;4. Department of Physics, Gebze Technical University, 41400 Gebze/Kocaeli, Turkey;1. Department of Medical Services and Techniques, Eldivan Medical Services Vocational School, Çankırı Karatekin University, Çankırı 18100, Turkey;2. Department of Physics Engineering, Faculty of Engineering, Ankara University, Beşevler-Ankara 06100, Turkey;3. Department of Chemistry, Faculty of Arts and Sciences, Çanakkale Onsekiz Mart University, Çanakkale 17100, Turkey;4. Vocational School of Health Services, Ankara University, Kecioren-Ankara 06290, Turkey;5. Department of Physics, Faculty of Science, Ankara University, Besevler-Ankara 06100, Turkey |
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| Abstract: | The linear absorption, nonlinear absorption (NA), second harmonic generation (SHG) and carrier mobilities of undoped and 0.1 at% Dy doped GaSe single crystals grown by modified Bridgman method have been studied by UV–vis, open aperture Z-scan, SHG and transmission ultrafast pump probe spectroscopy experiments. Both linear absorption and SHG measurements clearly showed that the doping of GaSe crystal with Dy3+ leads to a shift in the linear absorption edge. The mechanisms contributing to the NA behavior were explained and discussed. The photobleaching behaviors of the crystals were investigated by delaying of the probe signal in transmission pump-probe spectroscopy experiments. |
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