Refractive index measurement of turbid media by transmission of backscattered light near the critical angle

H Contreras-Tello, A García-Valenzuela - Applied Optics, 2014 - opg.optica.org
We investigate experimentally the determination of the effective refractive index (RI) of a
turbid particle suspension from the angle dependence of light scattered by the particles and …

The derivative method of critical-angle refractometry for attenuating media

S Koutsoumpos, P Giannios, I Stavrakas… - Journal of …, 2020 - iopscience.iop.org
Specular reflectance of monochromatic linearly polarized light, reflected on the interface of a
prism coupled to a transparent medium at the critical angle of the transition to total internal …

Extension of Fresnel's formulas for turbid colloidal suspensions: a rigorous treatment

E Gutiérrez-Reyes, A García-Valenzuela… - The Journal of …, 2014 - ACS Publications
We provide new expressions for the reflection amplitudes of a half space of randomly
located identical spherical particles that can be regarded as an extension of Fresnel's …

Critical angle refractometry with optically isotropic attenuating media

S Koutsoumpos, P Giannios, K Moutzouris - Applied Physics B, 2022 - Springer
We report on a refractometry method for determining the complex refractive index of isotropic
attenuating media, which relies on the measurement of the two critical angles at the s and p …

Dynamic refractive index distribution measurement of dynamic process by combining dual-channel simultaneous phase-shifting interferometry and total internal …

Y Zhou, H Zou, L Zhong, J Li, B Li, J Tian, X Lu - Scientific Reports, 2018 - nature.com
We propose and demonstrate a novel method to measure dynamic refractive index
distributions using a combination of total internal reflection (TIR) and dual-channel …

Extended derivative method of critical-angle refractometry for attenuating media: Error analysis

S Koutsoumpos, P Giannios… - … Science and Technology, 2021 - iopscience.iop.org
The derivative method of critical angle (or total internal reflection) refractometry is the most
common approach for determining the refractive index of transparent samples. Only recently …

[HTML][HTML] Measurement of turbid media by total internal reflection with Goos-Hänchen angle displacement

Y Miao, CJ Dong, Y Ma, C Jia, Z Wang, H Liu - Results in Physics, 2024 - Elsevier
Based on the Goos-Hänchen effect and the intensity attenuation of the evanescent wave
penetrating and traveling, a new theoretical model of total internal reflection from the …

Effect of the gradient of complex refractive index at boundary of turbid media on total internal reflection

J Sun, J Wang, Y Liu, Q Ye, H Zeng, W Zhou, J Mei… - Optics …, 2015 - opg.optica.org
We analyze the existence of non-uniformity at the boundary of turbid media, and develop a
gradient complex refractive index multilayered model in terms of this fact. Our model reveals …

Real part of refractive index measurement approach for absorbing liquid

H Liu, J Ye, K Yang, M **a, W Guo, W Li - Applied Optics, 2015 - opg.optica.org
An algorithm based on use of a reflected refractometer to measure the real part of the
refractive index (RI) for an absorbing liquid is presented. The absorption of liquid will blur the …

Two prism critical angle refractometry with attenuating media

S Koutsoumpos, P Giannios, K Moutzouris - Instruments, 2022 - mdpi.com
We present a concept that enables the determination of the complex refractive index of
attenuating media from two critical angles, measured sequentially at two interfaces between …