Premium
M easuring opto‐thermal parameters of basalt fibers using digital holographic microscopy
Author(s) -
Yassien Khaled M.,
Agour Mostafa
Publication year - 2017
Publication title -
microscopy research and technique
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.536
H-Index - 118
eISSN - 1097-0029
pISSN - 1059-910X
DOI - 10.1002/jemt.22789
Subject(s) - refractive index , materials science , optics , holography , digital holographic microscopy , optical path , digital holography , optical fiber , dispersion (optics) , dielectric , interferometry , optoelectronics , physics
A method for studying the effect of temperature on the optical properties of basalt fiber is presented. It is based on recording a set of phase‐shifted digital holograms for the sample under the test. The holograms are obtained utilizing a system based on Mach–Zehnder interferometer, where the fiber sample inserted in an immersion liquid is placed within a temperature controlled chamber. From the recorded digital holograms the optical path differences which are used to calculate the refractive indices are determined. The accuracy in the measurement of refractive indices is in the range of 4 × 10 −4 . The influence of temperature on the dispersion parameters, polarizability per unit volume and dielectric susceptibility are also obtained. Moreover, the values of dispersion and oscillation energies and Cauchy's constants are provided at different temperatures.