Abstract

Equations are presented for determining the optical properties of an absorbing uniaxial crystal by measuring the reflectance from a basal plane as a function of the angle of incidence and the angle of polarization. The technique is applied to a pyrolytic graphite crystal to determine the optical properties at 632.8 nm. The results are calculated numerically by use of a combination of the Taylor-series and gradient methods. The best-fit values found for the optical constants of pyrolytic graphite at 632.8 nm are n0 = 2.55, ne = 1.78, κ0 = 0.66, and κe = 0.00.

© 1970 Optical Society of America

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Equations (16)

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