Single beam interferometric angle measurement

Details Single beam interferometric angle measurement Single beam interferometric angle measurement

2006-12-12

arxiv.org/abs/physics/0612100v3

Optics Communications 280, 280 (2007) 1-9

Physics

Instrumentation and Detectors

Scientific paper

10.1016/j.optcom.2007.07.060

We present an application of a quadrature phase interferometer to the measurement of the angular position of a parallel laser beam with interferometric precision. In our experimental realization we reach a resolution of 6.8e-10 rad (1.4e-4 arcsec) for 1 kHz bandwidth in a 2e-2 rad (1 deg) range. This alternative to the optical lever technique features absolute calibration, independence of the sensitivity on the thermal drifts, and wide range of measurement at full accuracy.

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