Investigating the experimental limits of the Brewster's angle method

Authors

CAN SÜMER
ALP KUŞTEPELİ
MEHMET SALİH DİNLEYİCİ

DOI

10.3906/elk-1707-210

Abstract

We present the method, analysis, and experimental results of the Brewster's angle method commonly used for determining the refractive indices of optical films. We show the significance of the intersection of reflectance curves, in that the necessity for substrate refractive index and film layer thickness knowledge are both eliminated. We present the conditions for the existence of the second intersection of reflectance curves and introduce a method for determining the refractive index of the substrate layer by using the angular information alone. Analytical results reveal impressive practical sensitivity and accuracy limits for the method, where the experimental results also support the theoretical analysis.

Keywords

Refractive index, nondestructive measurement, Brewster's angle, optical film

First Page

1202

Last Page

1213

Recommended Citation

SÜMER, CAN; KUŞTEPELİ, ALP; and DİNLEYİCİ, MEHMET SALİH (2018) "Investigating the experimental limits of the Brewster's angle method," Turkish Journal of Electrical Engineering and Computer Sciences: Vol. 26: No. 3, Article 7. https://doi.org/10.3906/elk-1707-210
Available at: https://journals.tubitak.gov.tr/elektrik/vol26/iss3/7