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Optical Anisotropy of MgF, in Its UV Absorption Region

✍ Scribed by J. Thomas; G. Stephan; J. C. Lemonnier; M. Nisar; S. Robin

Publisher
John Wiley and Sons
Year
1973
Tongue
English
Weight
383 KB
Volume
56
Category
Article
ISSN
0370-1972

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✦ Synopsis

Abstract

Reflectance measurements are used to calculate the ordinary and extraordinary optical constants of an anisotropic MgFz crystal in the energy range 11 to 28 eV. Partially linearly polarized light is used and a method of least squares is employed to compute the results. An excitonic splitting of 0.5 eV is observed at the r point. The anisotropy of the forbidden gap is 0.2 eV while that of plasmon is 0.3 eV. A tentative interpretation is given based upon a symmetry group analysis at the T point.

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