Optically poled SHG and THG effects in cesium doped zinc oxide nanorods
作者： B Santoshkumar , S Kalyanaraman , R Thangavel , T Santhoshkumar , G Annadurai
DOI: 10.1007/S10854-018-8794-9
关键词:
摘要: The hexagonal wurtzite structure of the synthesized undoped and cesium (Cs) doped zinc oxide (ZnO) nanorods were confirmed with X-ray diffraction patterns. Further analysis field emission scanning electron microscope images energy dispersive spectra revealed c-axis oriented morphology samples chemical composition. Optical poling through 337 nm nitrogen laser has been adopted to enhance nonlinear optical properties. When power density fundamental beam from Nd:YAG 1064 nm matched band edge samples, resonant absorption takes place leading enhanced NLO interstitial occupancy dopants in 3 5 mol% CsZnO increases tailing forbidden gap. minimum Urbach calculated UV–Vis corresponding 1 mol% more ordering sample. More second third order effects observed this sample having larger crystallite size, lesser diameter, gap, urbach higher electron–phonon interaction.
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