title: Laser bandwidth effects in quantitative cavity ring-down spectroscopy.
abstract: We have investigated the effects of laser bandwidth on quantitative cavity ring-down spectroscopy using the (r)R transitions of the b(ν = 0)?X(ν = 0) band of molecular oxygen. It is found that failure to account properly for the laser bandwidth leads to systematic errors in the number densities determined from measured ring-down signals. When the frequency-integrated expression for the ring-down signal is fitted and measured laser line shapes are used, excellent agreement between measured and predicted number densities is found.
authors.forename: J T
authors.initials: JT
authors.lastname: Hodges
authors.forename: J P
authors.initials: JP
authors.lastname: Looney
authors.forename: R D
authors.initials: RD
authors.lastname: van Zee