title: Design of a difference-frequency infrared laser spectrometer for absorption line-shape studies.
abstract: An infrared laser spectrometer based on difference-frequency generation in LiIO(3) is described. The spectrometer has a frequency uncertainty of less than 1 MHz and a signal-to-noise ratio between 3000:1 and 10,000:1. These properties allow the spectrometer to be used for studies of the non-Lorentzian and non-Voigt character of absorption line shapes in atmospheric trace gases.
authors.affiliation: Department of Physics, University of Toronto, Toronto, Canada. rick@atmosp.physics.utoronto.ca
authors.forename: R
authors.initials: R
authors.lastname: Wehr
authors.forename: J R
authors.initials: JR
authors.lastname: Drummond
authors.forename: A D
authors.initials: AD
authors.lastname: May