Abstract

Cyclic errors that are due to optical leakage limit the precision of displacement measurements made with optical interferometers. A method for real-time estimation of leakage components is introduced and is used to implement a novel passive technique for suppression of cyclic nonlinearities that uses only adjustments of existing polarizers and quarter-wave plates. This approach is used to reduce the cyclic error from 3 nm to 300 pm for an interferometer operating at a wavelength of 1320 nm.

© 2002 Optical Society of America

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References

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  1. N. Bobroff, Meas. Sci. Technol. 4, 907 (1993).
    [CrossRef]
  2. R. C. Quenelle, Hewlett Packard J. 34, 10 (1983).
  3. C. Wu and R. D. Deslattes, Appl. Opt. 37, 6696 (1998).
    [CrossRef]
  4. S. Dubovitsky, NASA Tech. Briefs 25(2) (2001).
  5. W. Hou and G. Wilkening, Precis. Eng. 14, 91 (1992).
    [CrossRef]
  6. CVI Laser Optics and Coatings Catalog (CVI, Albuquerque, N.M., 2001).

2001 (1)

S. Dubovitsky, NASA Tech. Briefs 25(2) (2001).

1998 (1)

1993 (1)

N. Bobroff, Meas. Sci. Technol. 4, 907 (1993).
[CrossRef]

1992 (1)

W. Hou and G. Wilkening, Precis. Eng. 14, 91 (1992).
[CrossRef]

1983 (1)

R. C. Quenelle, Hewlett Packard J. 34, 10 (1983).

Bobroff, N.

N. Bobroff, Meas. Sci. Technol. 4, 907 (1993).
[CrossRef]

Deslattes, R. D.

Dubovitsky, S.

S. Dubovitsky, NASA Tech. Briefs 25(2) (2001).

Hou, W.

W. Hou and G. Wilkening, Precis. Eng. 14, 91 (1992).
[CrossRef]

Quenelle, R. C.

R. C. Quenelle, Hewlett Packard J. 34, 10 (1983).

Wilkening, G.

W. Hou and G. Wilkening, Precis. Eng. 14, 91 (1992).
[CrossRef]

Wu, C.

Appl. Opt. (1)

Hewlett Packard J. (1)

R. C. Quenelle, Hewlett Packard J. 34, 10 (1983).

Meas. Sci. Technol. (1)

N. Bobroff, Meas. Sci. Technol. 4, 907 (1993).
[CrossRef]

NASA Tech. Briefs (1)

S. Dubovitsky, NASA Tech. Briefs 25(2) (2001).

Precis. Eng. (1)

W. Hou and G. Wilkening, Precis. Eng. 14, 91 (1992).
[CrossRef]

Other (1)

CVI Laser Optics and Coatings Catalog (CVI, Albuquerque, N.M., 2001).

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Figures (2)

Fig. 1
Fig. 1

Schematic heterodyne interferometer for measuring displacement of the target retroreflector (retro) with respect to the fiducial retroreflector. Pol, polarizer; BS, nonpolarizing beam splitter; PDs, photodetectors. Other abbreviations and labels defined in text. Fibers are single-mode polarization maintaining. Beams are coaxial; spatial offsets are shown for clarity only.

Fig. 2
Fig. 2

Schematic electric field vectors of four components of the light incident on the signal polarizer. s- and p-polarization states are defined with respect to the main PBS. If the leakage term ALp has amplitude equal to ALs, the resultant dashed vector is nulled by the signal polarizer.

Tables (1)

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Table 1 Components of Light Incident on Signal Polarizer

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