Determination of Degree of Anisotropy of KTP crystal using Reflectance Anisotropy Spectroscopy Technique
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Date
2006-06
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Addis Ababa University
Abstract
Reflectance anisotropy spectroscopy (RAS) is a non-distractive optical probe of
surfaces that is capable of operation within a wide range of environments. In
this thesis by applying this optical technique it has been attempted to determine
the degree of anisotropy of the biaxial Potassium Titanyl Phosphate (KTP) crystal
with fractional error 0.165 %. In addition, the angle between the two optical axes
of KTP crystal has been calculated with mean error 0.16 % for the case of acute
angle and 0.17% mean error for obtuse angle. Furthermore, attempt was made to
apply the method to natural basalt rock which is found from Ertal’ Ale eastern
part of Ethiopia
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using Reflectance Anisotropy Spectroscopy Technique