Abstract

In order to better understand the mechanisms controlling atmospheric ozone transfer and production in the troposphere, as well as ozone exchange between the troposphere and stratosphere, the Atmospheric Environment Service has undertaken to build a differential absorption lidar (DIAL) system at its Centre for Atmospheric Research Experiments facility in Egbert, Ontario, located approximately 80 kilometres north of metropolitan Toronto. The system under construction will employ Raman shifting of quadrupled Nd:YAG output at 266 nm to 289.9 and 294.2 nm through the use of HD and D₂ respectively (1,2). This is a basic change in approach from the earlier dye laser-based system used by A.E.S. at the Centre for Atmospheric Research Experiments (C.A.R.E.) (3).

© 1993 Optical Society of America