Heterodyne Spectroscopy with Tunable Laser Sidebands

Abstract

Tunable laser sidebands were successfully employed for the first time as a local oscillator in infrared heterodyne spectroscopy. By careful design of a resonant electrooptic modulator, sideband power in excess of 5 mW has been generated from 4W of CO2 laser power at a microwave drive power level of 10 W.