Near infrared to ultraviolet anisotropic optical properties of single crystal SrLaAlO sub(4) from spectroscopic ellipsometry

The anisotropic optical properties of single crystal SrLaAlO sub(4) are investigated using spectroscopic ellipsometry over the range from 0.74 to 5.90eV. Divided spectral range analysis of ellipsometric and Mueller matrix spectra are used to obtain the sample structural parameters (surface roughness...

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Bibliographic Details
Published in:Physica Status Solidi. B: Basic Solid State Physics 2016-10, Vol.253 (10), p.2066-2072
Main Authors: Adhikari, Dipendra, Junda, Maxwell M, Uprety, Prakash, Ghimire, Kiran, Subedi, Indra, Podraza, Nikolas J
Format: Article
Language:English
Subjects:
Anisotropy
Birefringence
Ellipsometry
Optical properties
Single crystals
Solid state physics
Spectra
Spectroscopy
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Summary:The anisotropic optical properties of single crystal SrLaAlO sub(4) are investigated using spectroscopic ellipsometry over the range from 0.74 to 5.90eV. Divided spectral range analysis of ellipsometric and Mueller matrix spectra are used to obtain the sample structural parameters (surface roughness thickness and void fraction). The ordinary and extra-ordinary optical properties in the form of complex dielectric function, = sub(1)+i sub(2) (or complex index of refraction, N=n+ik), spectra are extracted from the same analysis. The observed birefringence is 0.025 in the transparent range. An upper limit for the indirect gap at 3.01 plus or minus 0.01eV and a critical point at 5.54 plus or minus 0.01eV are identified within the measured spectral range.
ISSN:0370-1972
1521-3951
DOI:10.1002/pssb.201600286