title: Active stabilization system for Fabry-Perot interferometers.
abstract: We describe an optical technique to monitor and stabilize the cavity spacing of a Fabry-Perot interferometer, allowing it to be used as a tunable filter.
authors.forename: T M
authors.initials: TM
authors.lastname: Herbst
authors.forename: S V
authors.initials: SV
authors.lastname: Beckwith