Abstract

By using the scatterplate interferometer in a noncommon path mode, it becomes possible to cancel test aberration. The techniques for fabricating such a scatterplate are very similar to those found in holographic interferometry. A null test of a 20-cm diam, f/3 parabola is described.

© 1980 Optical Society of America

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References

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  1. J. B. Houston, Opt. Spectra 4(6), 32 (1970).
  2. J. M. Burch, in Optical Instruments and Techniques, J. H. Dickson, Ed. (Oriel, London1970), p. 220.
  3. R. N. Smartt, J. Strong, J. Opt. Soc. Am. 62, 737 (1972).
  4. R. M. Scott, Appl. Opt. 8, 531 (1969).
  5. A. J. MacGovern, J. C. Wyant, Appl. Opt. 10, 619 (1971).
    [CrossRef] [PubMed]

1972

R. N. Smartt, J. Strong, J. Opt. Soc. Am. 62, 737 (1972).

1971

1970

J. B. Houston, Opt. Spectra 4(6), 32 (1970).

1969

R. M. Scott, Appl. Opt. 8, 531 (1969).

Burch, J. M.

J. M. Burch, in Optical Instruments and Techniques, J. H. Dickson, Ed. (Oriel, London1970), p. 220.

Houston, J. B.

J. B. Houston, Opt. Spectra 4(6), 32 (1970).

MacGovern, A. J.

Scott, R. M.

R. M. Scott, Appl. Opt. 8, 531 (1969).

Smartt, R. N.

R. N. Smartt, J. Strong, J. Opt. Soc. Am. 62, 737 (1972).

Strong, J.

R. N. Smartt, J. Strong, J. Opt. Soc. Am. 62, 737 (1972).

Wyant, J. C.

Appl. Opt.

J. Opt. Soc. Am.

R. N. Smartt, J. Strong, J. Opt. Soc. Am. 62, 737 (1972).

Opt. Spectra

J. B. Houston, Opt. Spectra 4(6), 32 (1970).

Other

J. M. Burch, in Optical Instruments and Techniques, J. H. Dickson, Ed. (Oriel, London1970), p. 220.

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Figures (7)

Fig. 1
Fig. 1

Schematic of a scatterplate interferometer.

Fig. 2
Fig. 2

Schematic of optical method for producing the modified scatterplate.

Fig. 3
Fig. 3

Schematic of the optical testing configuration for the modified scatterplate.

Fig. 4
Fig. 4

Interferograms of parabolic mirror (a) without and (b) with correction.

Fig. 5
Fig. 5

Speckled interference pattern for a weak diffuser; (a) paraxial focus; (b) marginal focus.

Fig. 6
Fig. 6

Defocused star pattern (a) without and (b) with astigmatism.

Fig. 7
Fig. 7

Coma interferogram drawing indicating direction of beam tilt.

Equations (6)

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S ( x , y ) = S ( x , y ) ,
I f = | a exp ( i 2 π f 0 X ) + [ exp ( ik W ) P ] ~ | 2 ,
= a 2 + a exp ( i 2 π f 0 X ) [ exp ( ik W ) P ] ~ * + a exp ( i 2 π f 0 X ) [ exp ( ik W ) P ] ~ + | [ exp ( ik W ) P ] ~ | 2
S α a 2 + a [ exp [ ik W ( x + x o ) ] P ( x + x o ) ] ~ + a [ exp [ iW ( x x o ) ] P ( x xo ) ] ~ + | [ exp ( ik W ) P ] ~ | 2
OPD = [ ( xp x + yp y ) 2 ] / R 3 ,
α = 0.6328 0.5145 = 1.23 .

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