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A low-finesse Fabry–Pérot interferometer for use in displacement measurements with applications in absolute gravimetry

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Abstract

A low-finesse Fabry–Pérot interferometer is used to determine long and fast displacements. Two corner cube reflectors form the traveling-wave cavity and one beam splitter couples the input collimated laser beam. Given the retro-directive property of corner cube reflectors, the cavity operates at the edge of stability over an extended scanning range. The in-line scheme with a single fixed optical component makes the proposed interferometer robust and easy to align and use. These characteristics are particularly useful in applications running in noisy environments, such as in on-field absolute gravimetry. Experimental data showing the performances reached in a transportable ballistic gravimeter are also presented.

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Authors and Affiliations

  1. Division of Mechanics, Istituto Nazionale di Ricerca Metrologica (INRIM), Strada delle cacce 73, 10135, Torino, Italy

    G. D’Agostino, M. Zucco, M. Pisani & A. Germak

  2. Time Department, Bureau International des Poids et Mesures (BIPM), Pavillon de Breteuil, 92312, Sèvres Cedex, France

    L. Robertsson

Authors
  1. G. D’Agostino
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  2. L. Robertsson
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  3. M. Zucco
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  4. M. Pisani
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  5. A. Germak
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Corresponding author

Correspondence to G. D’Agostino.

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D’Agostino, G., Robertsson, L., Zucco, M. et al. A low-finesse Fabry–Pérot interferometer for use in displacement measurements with applications in absolute gravimetry. Appl. Phys. B 106, 829–834 (2012). https://doi.org/10.1007/s00340-011-4747-1

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  • DOI: https://doi.org/10.1007/s00340-011-4747-1

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