title: Multipass counterrotating wave-plate frequency shifters for heterodyne interferometry.
abstract: A multipass counterrotating wave-plate frequency shifter for heterodyne interferometry is proposed. By using this method, with a fixed optical system, it is possible to generate wide, tunable-frequency-shifted signals.
authors.forename: Y
authors.initials: Y
authors.lastname: Li
authors.forename: G
authors.initials: G
authors.lastname: Eichmann