Design of a difference-frequency infrared laser spectrometer for absorption line-shape studies.
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.
Wehr
R
R
Department of Physics, University of Toronto, Toronto, Canada. rick@atmosp.physics.utoronto.ca
Drummond
J R
JR
May
A D
AD