title: An active interferometer-stabilization scheme with linear phase control.
abstract: We report a simple and robust computer-based active interferometer stabilization scheme which does not require modulation of the interfering beams and relies on an error signal which is linearly related to the optical path difference. In this setup, a non-collinearly propagating reference laser beam stabilizes the interference output of the laser light propagating collinearly through the interferometer. This stabilization scheme enables adjustable phase control with 20 ms switching times in the range from 0.02pi radians to 6pi radians at 632.8 nm.
authors.forename: Vishnu Vardhan
authors.initials: VV
authors.lastname: Krishnamachari
authors.forename: Esben Ravn
authors.initials: ER
authors.lastname: Andresen
authors.forename: Søren Rud
authors.initials: SR
authors.lastname: Keiding
authors.forename: Eric Olaf
authors.initials: EO
authors.lastname: Potma