Generation of continuously tunable laser sidebands in the submillimeter region

Abstract

Substantial difference- and sum-frequency signals (up to 10−7 W) have been generated and reradiated by mixing the HCN laser radiation at 337 μm with that of a (tunable) millimeter-wave klystron in a metal-semiconductor point-contact or Schottky barrier diode. The magnitude and degree of monochromaticity of the generated power were sufficient for high-resolution spectroscopy as verified by measurements on H2S and CH3OH.