High-resolution quadruple-channel heterodyne laser velocimeter based on birefringent optics |
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| Authors: | H.J. van Elburg J.J.J. Dirckx W.F. Decraemer |
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| Affiliation: | aLaboratory of Biomedical Physics, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerpen, Belgium |
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| Abstract: | Recently we introduced a dual-beam heterodyne interferometer where combinations of half-silvered and fully reflecting mirrors were used to achieve beam doubling. We now propose a quadruple-beam system in which birefringent beam displacers generate the four parallel beams. We present the design and the performance characteristics of this apparatus. |
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| Keywords: | Multipoint Vibrometry Cross-talk Birefringence |
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