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Optica Publishing Group
  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 1990),
  • paper CTUH80

Interferometrie absolute distance meter utilizing a single He-Ne laser and heterodyne detection

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Abstract

Multiple wavelength interferometric techniques can provide absolute distance measurements without the need of ancillary reference measurements. Distance can be nonambiguously obtained within a range defined by the synthetic or equivalent wavelengths λeq = λ1λ2/|λ1 — λ2|, where λ1 and λ2 are two different lightwaves.

© 1990 Optical Society of America

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