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1 Phys-ENS - Laboratoire de Physique de l-ENS Lyon

Abstract : 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.

Keywords : Angle measurement interferometer quadrature phase interferometry

Author: Pierdomenico Paolino - Ludovic Bellon -



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