An active interferometer-stabilization scheme with linear phase control.
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.
Krishnamachari
Vishnu Vardhan
VV
Andresen
Esben Ravn
ER
Keiding
Søren Rud
SR
Potma
Eric Olaf
EO