Nonlinear errors induced by intermodulation in heterodyne laser interferometers.
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DOI: 10.1364/ol.42.000427
Abstract: A striking abnormal harmonic is detected in the measurement signal spectrum of a heterodyne laser interferometer, which deviates from the conventional frequency-domain model. A nonlinearity model based on intermodulation is proposed to explain this abnormality… read more here.
Keywords: nonlinear errors; errors induced; heterodyne laser; intermodulation ... See more keywords