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@article{155920, author = {Dr. Litty Mathew Irimpan}, title = {Tunable Nonlinear Optical Properties of Zno-Cu Nanocomposites due to the Impact of Self Assembly}, journal = {International Journal of Innovative Research in Technology}, year = {}, volume = {9}, number = {2}, pages = {235-238}, issn = {2349-6002}, url = {https://ijirt.org/article?manuscript=155920}, abstract = {In the present work, we compare the nonlinear optical properties of ZnO-Cu colloid and self-assembled film by z scan technique. ZnO and Zno-Cu colloid clearly exhibit a negative nonlinear index of refraction at 532 nm and the observed nonlinear refraction is attributed to two-photon absorption followed by weak free-carrier absorption and interband absorption mechanisms. Zno-Cu colloid exhibit reverse saturable absorption whereas the self-assembled film exhibits saturable absorption. These different nonlinear characteristics in the self-assembled films can be mainly attributed to the saturation of linear absorption of the ZnO defect states. ZnO–Cu is a potential nanocomposite material for the light emission and for the development of nonlinear optical devices with a relatively small limiting threshold.}, keywords = {Nanocomposites, Self-assembly, ZnO-Cu, z-scan, Saturable absorption, Reverse saturable absorption}, month = {}, }
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