Nonlinear optical properties of CdS and ZnS nanoparticles doped into zirconium oxide films
R. A. GaneevInstitute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa,#N#Chiba 277-8581,#N#JapanM. Baba†Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8581, JapanMakoto MoritaDepartment of Applied Chemistry, Faculty of Engineering, Seikei University, Kichijoji, Musashino-shi, Tokyo 180-8633, JapanD. RauDepartment of Applied Chemistry, Faculty of Engineering, Seikei University, Kichijoji, Musashino-shi, Tokyo 180-8633, JapanHiroyuki FujiiDepartment of Applied Chemistry, Faculty of Engineering, Seikei University, Kichijoji, Musashino-shi, Tokyo 180-8633, JapanA.I. RyasnyanskySamarkand State University, Samarkand 703004, UzbekistanN. IshizawaChemical Resources Laboratory, Tokyo Institute of Technology, Nagatuda, Midoriku, Yokohama 226-8503, JapanM. Suzuki†Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8581, JapanHiroto Kuroda†Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8581, Japan
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The nonlinear refraction and nonlinear absorption of ZrO2 thin films doped with CdS and ZnS nanoparticles and various metals were investigated using the Z-scan technique. The structural properties of these films (TEM, EDX) were compared with their optical and nonlinear optical characteristics. The values of nonlinear refractive index of these films were measured to be of the order of at a laser intensity of 9 ? 109?W?cm?2. Sign variations of ? of ZrO2:CdS(Cr) and ZrO2:ZnS(Mn) films due to fifth-order nonlinearities were observed and analysed using the intensity-dependent Z-scan studies of nonlinear optical parameters.
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