Vol. 30, Issue 2-3, pp. 415-419 (2000)

Abstract

An enhancement of the polar Kerr effect in the magneto-optical (MO) readout system is achieved by specific dielectric thin-film coatings. The MO medium of refractive index n and MO constant q, overcoated by a dielectric thin film, is equivalent in normal reflection to an uncoated MO medium of parameters N and Q. Following this reasoning we present simple relations for equivalent parameters N and Q of different systems. Behaviour of parameters N and Q is illustrated by numerical examples. The use of equivalent parameters allows an easier comparison among different MO systems.