The application of dual-wavelength 3.39 um HeNe laser on absolute distance interferometry

Ren Weiming

doi:10.1117/12.2316228

1 September 1996 The application of dual-wavelength 3.39μm HeNe laser on absolute distance interferometry

Ren Weiming

Proceedings Volume 2778, 17th Congress of the International Commission for Optics: Optics for Science and New Technology; 2778EZ (1996) https://doi.org/10.1117/12.2316228
Event: 17th Congress of the International Commission for Optics: Optics for Science and New Technology, 1996, Taejon, Korea, Republic of

Abstract

A dual-wavelength 3.39μm HeNe laser is used to construct a beat interferometer which can realize the measurements of absolute distances in this paper. With this laser the interferometer produces a series of spatial beat wave. By directly measuring the fractional orders of these beat waves, the accurate value of measured length can be calculated in terms of them. The experiments have shown that the measurement accuracy of fractional order is 32μm.

Citation Download Citation

Ren Weiming "The application of dual-wavelength 3.39μm HeNe laser on absolute distance interferometry", Proc. SPIE 2778, 17th Congress of the International Commission for Optics: Optics for Science and New Technology, 2778EZ (1 September 1996); https://doi.org/10.1117/12.2316228

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