Single beam interferometric angle measurement

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 6.8 × 10 −10 rad (1.4 × 10 −4″) for 1 kHz bandwidth in a 2 × 10 −2 rad (1°) rang...

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Bibliographic Details
Published in:Optics communications 2007-12, Vol.280 (1), p.1-9
Main Authors: Paolino, P., Bellon, L.
Format: Article
Language:English
Subjects:
Exact sciences and technology
Instrumentation and Detectors
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Interferometers
Measurements common to several branches of physics and astronomy
Metrology, measurements and laboratory procedures
Optical instruments, equipment and techniques
Optics
Physics
Spatial dimensions (e.g.: position, lengths, volume, angles, displacements, including nanometer-scale displacements)
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Summary: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 6.8 × 10 −10 rad (1.4 × 10 −4″) for 1 kHz bandwidth in a 2 × 10 −2 rad (1°) 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.
ISSN:0030-4018
1873-0310
DOI:10.1016/j.optcom.2007.07.060