Abstract

Laser interferometers for measuring lengths, gas refraction indexes, and laser wavelengths and for determining relative object positions have been developed. The instruments are based on a traditional principle of fringe-counting interferometers; for the determination of positions a reversed aperture interferometer sensitive to light-source displacements has been used.

© 1972 Optical Society of America

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References

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  1. F. Glantschnig, M. Leroux, F. Mottier, F. K. von Willisen, Lasers 8, 94 (1967).
  2. J. B. Saunders, Appl. Opt. 2, 541 (1963).
    [Crossref]

1967 (1)

F. Glantschnig, M. Leroux, F. Mottier, F. K. von Willisen, Lasers 8, 94 (1967).

1963 (1)

Glantschnig, F.

F. Glantschnig, M. Leroux, F. Mottier, F. K. von Willisen, Lasers 8, 94 (1967).

Leroux, M.

F. Glantschnig, M. Leroux, F. Mottier, F. K. von Willisen, Lasers 8, 94 (1967).

Mottier, F.

F. Glantschnig, M. Leroux, F. Mottier, F. K. von Willisen, Lasers 8, 94 (1967).

Saunders, J. B.

von Willisen, F. K.

F. Glantschnig, M. Leroux, F. Mottier, F. K. von Willisen, Lasers 8, 94 (1967).

Appl. Opt. (1)

Lasers (1)

F. Glantschnig, M. Leroux, F. Mottier, F. K. von Willisen, Lasers 8, 94 (1967).

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Figures (4)

Fig. 1
Fig. 1

General view of displacement laser interferometer.

Fig. 2
Fig. 2

Results of measuring scale divisions: 1, interferometer readings free of introducing corrections; 2, interferometer readings adjusted to normal conditions; 3, certified scale error at 20°C.

Fig. 3
Fig. 3

Interferometer block diagram.

Fig. 4
Fig. 4

Optical scheme of position interferometer.

Equations (4)

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1 / C 4 = [ 1144 ( t - 20 ) - 441 ( p - 760 ) + 69 ( e - 10 ) ] · 10 - 6 ,
δ y = N λ = S B 2 + B 2 C 2 C 1 B 1 - S B 1 ,
δ y = ( 2 y d / L ) + 2 h ,
d = ( L · N · λ ) / 2 A .

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