Electrooptic Phase Modulation Gas Correlation Spectroradiometry

Abstract

Recent work[1] has demonstrated a new type of gas correlation spectroscopy where electrooptic phase modulation of a molecular spectrum together with selective absorption by a reference gas is used to quantify the abundance of a gas phase species selectively. The use of electrooptic phase modulation for gas correlation measurements is a significant enhancement of the gas correlation technique because it provides a means for remotely measuring winds as well as atmospheric species abundances and temperature in the stratosphere and mesosphere[2,3].