Abstract
A model is developed for junction detectors based on the antisymmetric electromagnetic-structure mode for two high-free-carrier-density regions separated by a slightly conductive barrier. The complex propagation constant is shown to increase as the 3/4 power of the frequency in a range defined by the ratio of the barrier conductivity to dielectric coefficient and by the free-carrier relaxation frequency and as the 1/4 power below this frequency range. This is shown to result in a decrease in the visible frequency heterodyne mixing response proportional to the 3/4 power of the intermediate frequency (2.3 dB per decade) from 100 GHz to a few terahertz. A linear inverse-frequency decrease in internal-junction quantum efficiency results for the same frequency range with a constant internal quantum efficiency below this.
© 1985 Optical Society of America
Full Article | PDF ArticleMore Like This
David E. Cooper and T. F. Gallagher
Appl. Opt. 24(9) 1327-1334 (1985)
W. E. Moerner and M. D. Levenson
J. Opt. Soc. Am. B 2(6) 915-924 (1985)
Ole Keller
J. Opt. Soc. Am. B 2(2) 367-376 (1985)