Rigorous modelling of light's intensity angular-profile in Abbe refractometers with absorbing homogeneous fluids

7th Sensors & their Applications

García-Valenzuela, A.^1 ; Contreras-Tello, H.^1 ; Márquez-Islas, R.^1 ; Sánchez-Pérez, C.^1

Centro de Ciencias y Desarrollo Tecnológico, Universidad Nacional Autónoma de México, Apartado Postal 70-186, 04510, Distrito Federal, Mexico^1

关键词: Abbe refractometers;    Angular profile;    Critical angles;    Electromagnetic optics;    Homogeneous fluids;    Light intensity distribution;    Optical modeling;    Refractometry;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/450/1/012022/pdf
DOI  :  10.1088/1742-6596/450/1/012022

来源: IOP

【 摘 要 】

We derive an optical model for the light intensity distribution around the critical angle in a standard Abbe refractometer when used on absorbing homogenous fluids. The model is developed using rigorous electromagnetic optics. The obtained formula is very simple and can be used suitably in the analysis and design of optical sensors relying on Abbe type refractometry.