Continuous phase stabilization and active interferometer control using two modes

Details Continuous phase stabilization and active interferometer control using two modes Continuous phase stabilization and active interferometer control using two modes

2011-01-10

arxiv.org/abs/1101.1906v1

Physics

Optics

3 pages, 2 figures

Scientific paper

We present a computer-based active interferometer stabilization method that can be set to an arbitrary phase difference and does not rely on modulation of the interfering beams. The scheme utilizes two orthogonal modes propagating through the interferometer with a constant phase difference between them to extract a common phase and generate a linear feedback signal. Switching times of 50ms over a range of 0 to 6 pi radians at 632.8nm are experimentally demonstrated. The phase can be stabilized up to several days to within 3 degrees.

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