Study on nonlinear optical thin films of CdZnSe quantum dots

2018 International Conference on Advanced Materials, Intelligent Manufacturing and Automation

材料科学;机械制造;运输工程

Pan, Mao Sen^1 ; Peng, Ru Yi^1

China Satellite Maritime Measurement and Control Division, Jiangyin, Jiangsu

214400, China^1

关键词: Beta coefficients;    Coating methods;    Non-linear optical;    Nonlinear absorptions;    Nonlinear refractive index n2;    Quantum dot films;    Reverse saturable absorption;    Third order nonlinear optical properties;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/382/2/022015/pdf
DOI  :  10.1088/1757-899X/382/2/022015

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

By one pot method prepared high quality Cd0.5Zn0.5Se uniform quantum dots, and the Cd0.5Zn0.5Se quantum dot film with uniform thickness was prepared by rotating coating method on the surface of FTO glass. The thickness and surface morphology of the quantum dots were measured and characterized by using a bench and scanning electron microscope. Third order nonlinear optical properties of quantum dots film was investigated by Z-scan method. The results show that at a wavelength of 532 nm laser induced, Cd0.5Zn0.5Se quantum dots film perform out of the excellent reverse saturable absorption effect, the third order nonlinear refractive index n2 is 8.2 × 10-12esu, third-order nonlinear absorption beta coefficient of 2.3 × 10-5m/W.