Abstract

A dual cw CO₂ laser system has been designed and is being assembled for remote long-path measurement of atmospheric trace gases. The components comprise a pair of RF-excited, grating-tunable waveguide CO₂ lasers, a beam splitter, a 5X beam expanding telescope with a pinhole aperture, transmit mirrors, a 37-cm diameter collector mirror, a HgCdTe detector, a pyroelectric reference detector, a dual function generator, four phase-sensitive (lock-in) detectors, three ratiometers, a differential meter and a chart recorder.

© 1985 Optical Society of America