Abstract

We have constructed and tested a laser interferometer transducer for a long, wideband, laser-linked gravitational radiation antenna. Photon-noise-limited performance was achieved using 80 μW from a single mode Spectra-Physics 119 laser in a modified Michelson interferometer on a vibration isolation table in a quiet room. A piezoelectric driver on one of the interferometer mirrors was used to generate subangstrom (3 × 10−14-m) vibrations of known amplitude. The measured displacement sensitivity of the system in the kilohertz region was 1.3×10-14m/Hz12, which compares well with the calculated photon noise limit of 1.06×10-14m/Hz12. This is the smallest vibrational displacement measured directly with a laser to date.

© 1971 Optical Society of America

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References

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  1. J. Weber, Phys. Rev. Lett. 22, 1320 (1969). See also other references in this paper.
    [CrossRef]
  2. “Experimental Relativity Hits the Big Time,” A Report on the Third Cambridge Conference on Relativity, Physics Today41, 43 (1970).
  3. L. R. Miller, Bull. Am. Phys. Soc. 13, 513 (1968).
  4. R. L. Forward, D. Berman, Phys. Rev. Lett. 18, 1071 (1967).
    [CrossRef]
  5. To our knowledge, the first suggestion was made by J. Weber in a telephone conversation with one of us (RLF) on 14September1964.
  6. R. L. Forward, “Multidirectional, Multipolarization Antennas for Scalar and Tensor Gravitational Radiation,” Gravity Research Foundation Essay, New Boston, N.H. (1969).
  7. G. Herziger, H. Lindner, Phys. Lett. 24A, 684 (1967).
  8. S. Szigoric, A. Gundjian, Proc. IEEE Lett. 57, 1313 (1969).
    [CrossRef]
  9. H. Boersch, H. Eichler, W. Wiesemann, Appl. Opt. 9, 645 (1970).
    [CrossRef] [PubMed]
  10. G. D. Blum, R. Weiss, Phys. Rev. 155, 1412 (1967).
    [CrossRef]
  11. G. D. Currie, Appl. Opt. 8, 1068 (1969).
    [CrossRef]

1970 (1)

1969 (3)

S. Szigoric, A. Gundjian, Proc. IEEE Lett. 57, 1313 (1969).
[CrossRef]

G. D. Currie, Appl. Opt. 8, 1068 (1969).
[CrossRef]

J. Weber, Phys. Rev. Lett. 22, 1320 (1969). See also other references in this paper.
[CrossRef]

1968 (1)

L. R. Miller, Bull. Am. Phys. Soc. 13, 513 (1968).

1967 (3)

R. L. Forward, D. Berman, Phys. Rev. Lett. 18, 1071 (1967).
[CrossRef]

G. Herziger, H. Lindner, Phys. Lett. 24A, 684 (1967).

G. D. Blum, R. Weiss, Phys. Rev. 155, 1412 (1967).
[CrossRef]

Berman, D.

R. L. Forward, D. Berman, Phys. Rev. Lett. 18, 1071 (1967).
[CrossRef]

Blum, G. D.

G. D. Blum, R. Weiss, Phys. Rev. 155, 1412 (1967).
[CrossRef]

Boersch, H.

Currie, G. D.

Eichler, H.

Forward, R. L.

R. L. Forward, D. Berman, Phys. Rev. Lett. 18, 1071 (1967).
[CrossRef]

R. L. Forward, “Multidirectional, Multipolarization Antennas for Scalar and Tensor Gravitational Radiation,” Gravity Research Foundation Essay, New Boston, N.H. (1969).

Gundjian, A.

S. Szigoric, A. Gundjian, Proc. IEEE Lett. 57, 1313 (1969).
[CrossRef]

Herziger, G.

G. Herziger, H. Lindner, Phys. Lett. 24A, 684 (1967).

Lindner, H.

G. Herziger, H. Lindner, Phys. Lett. 24A, 684 (1967).

Miller, L. R.

L. R. Miller, Bull. Am. Phys. Soc. 13, 513 (1968).

Szigoric, S.

S. Szigoric, A. Gundjian, Proc. IEEE Lett. 57, 1313 (1969).
[CrossRef]

Weber, J.

J. Weber, Phys. Rev. Lett. 22, 1320 (1969). See also other references in this paper.
[CrossRef]

To our knowledge, the first suggestion was made by J. Weber in a telephone conversation with one of us (RLF) on 14September1964.

Weiss, R.

G. D. Blum, R. Weiss, Phys. Rev. 155, 1412 (1967).
[CrossRef]

Wiesemann, W.

Appl. Opt. (2)

Bull. Am. Phys. Soc. (1)

L. R. Miller, Bull. Am. Phys. Soc. 13, 513 (1968).

Phys. Lett. (1)

G. Herziger, H. Lindner, Phys. Lett. 24A, 684 (1967).

Phys. Rev. (1)

G. D. Blum, R. Weiss, Phys. Rev. 155, 1412 (1967).
[CrossRef]

Phys. Rev. Lett. (2)

J. Weber, Phys. Rev. Lett. 22, 1320 (1969). See also other references in this paper.
[CrossRef]

R. L. Forward, D. Berman, Phys. Rev. Lett. 18, 1071 (1967).
[CrossRef]

Proc. IEEE Lett. (1)

S. Szigoric, A. Gundjian, Proc. IEEE Lett. 57, 1313 (1969).
[CrossRef]

Other (3)

“Experimental Relativity Hits the Big Time,” A Report on the Third Cambridge Conference on Relativity, Physics Today41, 43 (1970).

To our knowledge, the first suggestion was made by J. Weber in a telephone conversation with one of us (RLF) on 14September1964.

R. L. Forward, “Multidirectional, Multipolarization Antennas for Scalar and Tensor Gravitational Radiation,” Gravity Research Foundation Essay, New Boston, N.H. (1969).

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Figures (5)

Fig. 1
Fig. 1

Right angle interferometer antenna. The reference distance is not changed by gravitational radiation in the direction of propagation shown.

Fig. 2
Fig. 2

Multiple a interferometer antenna to measure propagation direction and polarization of gravitational radiation.

Fig. 3
Fig. 3

Optical layout of Michelson interferometer for gravitational radiation antenna transducer.

Fig. 4
Fig. 4

Photograph of interferometer setup on 3-Hz isolation suspension.

Fig. 5
Fig. 5

Interferometer system noise measurement at 5 kz.

Equations (2)

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Δ x / B 1 2 = 1.3 × 10 - 14 m / Hz 1 2 .
Δ x / B 1 2 = / ƛ ( η P / h ν ) 1 2 = 1.06 × 10 - 14 m / Hz 1 2 ,

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