title: Solar background rejection by a pressure-broadened atomic resonance filter operating at a Fraunhofer wavelength.
abstract: We have calculated the solar background rejection of the Mg atomic resonance filter operating at the b(1) Fraunhofer wavelength (518.4 nm) as a function of the pressure-broadened filter linewidth. For pressure broadening induced by the noble gases the solar background rejection decreases from 93% at a 0.002-nm bandwidth to 82-84% at a 0.02-nm bandwidth. Solar background rejection was insensitive to buffer gas and was optimum for the noble gas with the smallest shift-to-broadening ratio.
authors.forename: J A
authors.initials: JA
authors.lastname: Gelbwachs
authors.forename: M D
authors.initials: MD
authors.lastname: Tabat