PARAMETRIC AMPLIFICATION OF RADIATION BY THE INTRINSIC JOSEPHSON EFFECT

The use of the intrinsic Josephson effect in layered high-T-c supercon ductors for parametric amplification of a signal in the presence of a strong pump radiation is investigated. Model calculations are performe d both for thin films and massive material with a surface parallel to the c direction assuming normal incidence of the radiation with electr ic field parallel in c direction. In both cases a positive signal gain is obtained in a limited range of frequencies and pump power. (C) 199 7 American Institute of Physics.