We present a novel absolute-distance meter based on double heterodyne interferometry. The synthetic wavelength is obtained with a pair of tunable Nd:YAG lasers operating at 1.064 mum. The nonambiguity range of the measurement can be arbitrarily extended by subsequent measurements with different synthetic wavelengths. Experimental results from a prototype breadboard prove the feasibility of a large-nonambiguity-range, high-resolution absolute-distance meter.
Tunable, double-wavelength heterodyne detection interferometer for absolute-distance measurements
MINONI, Umberto;DOCCHIO, Franco
1994-01-01
Abstract
We present a novel absolute-distance meter based on double heterodyne interferometry. The synthetic wavelength is obtained with a pair of tunable Nd:YAG lasers operating at 1.064 mum. The nonambiguity range of the measurement can be arbitrarily extended by subsequent measurements with different synthetic wavelengths. Experimental results from a prototype breadboard prove the feasibility of a large-nonambiguity-range, high-resolution absolute-distance meter.File in questo prodotto:
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