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Rapid Orientation of Sapphire Monocrystals
Author(s) -
SHAW ROBERT R.
Publication year - 1963
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1963.tb11712.x
Subject(s) - sapphire , rod , materials science , optics , plane (geometry) , basal plane , orientation (vector space) , crystal (programming language) , optoelectronics , condensed matter physics , geometry , physics , laser , mathematics , computer science , medicine , alternative medicine , pathology , programming language
An optical method of orienting sapphire (α‐Al 2 O 3 ) single‐crystal rods with respect to the basal plane has been devised. Measuring times are on the order of 1 minute per specimen, and the accuracy is to within a few degrees. The direction of inclination of the basal plane may be easily determined. Relations describing the relative intensity of light through a uniaxial crystal in a polarized light field have been derived. Simple equipment built around a photovoltaic cell has been used to confirm these relations experimentally.