Abstract

In previous attempts to record holograms of incoherent objects, the fringe contrast has been quite low, often barely exceeding the photographic grain noise. A method is presented which improves the fringe contrast by allowing only a limited number of object points to contribute to any local fringe pattern in the hologram. The number of object points is reduced by taking the holographic transformation in only one direction while imaging the object onto the hologram plane in the orthogonal direction, using an astigmatic lens system. An interferometric device divides the wavefront and inverts one leg about a line in the imaging direction. The interference patterns from corresponding points are then incoherently superimposed on the hologram. Some experimental results are shown. The objects were illuminated with spatially incoherent light; a rotating diffuser was introduced in a laser beam.

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Cochran, G. D.

G. D. Cochran, J. Opt. Soc. Am. 56, 1513 (1966).

Knight, D.

M. Marchant and D. Knight, Opt. Acta 14, 199 (1967).

Kozma, A.

A. Kozma and N. Massey, J. Opt. Soc. Am. 56, 537A (1966).

Leith, E. N.

E. N. Leith and J. Upatnieks, J. Opt. Soc. Am. 53, 1377 (1963); 54, 1295 (1964).

E. N. Leith and J. Upatnieks, J. Opt. Soc. Am. 52, 1123 (1962). 625

Lohmann, A. W.

A. W. Lohmann, J. Opt. Soc. Am. 55, 1555 (1965).

Marchant, M.

M. Marchant and D. Knight, Opt. Acta 14, 199 (1967).

Massey, N.

A. Kozma and N. Massey, J. Opt. Soc. Am. 56, 537A (1966).

Mertz, L.

L. Mertz, Transformations in Optics John Wiley & Sons, New York, 1965), p. 110.

L. Mertz and N. O. Young, in Proceedings of the Conference on Optical Instruments and Techniques in London 1961, K. J. Habell, Ed. (Chapman and Hall Ltd., London, 1962), p. 305.

Montgomery, W. D.

W. D. Montgomery, J. Opt. Soc. Am. 56, 1769 (1966),

Peters, P. J.

P. J. Peters, Appl. Phys. Letters 8, 209 (1966).

Restrick, R. C.

G. W. Stroke and R. C. Restrick, Appl. Phys. Letters 7, 229 (1965).

Spitz, E.

E. Spitz and A. Werts, Comp. Rend. 262, B758 (1966).

Stroke, G. W.

G. W. Stroke and R. C. Restrick, Appl. Phys. Letters 7, 229 (1965).

G. W. Stroke, F. H. Westervelt, and R. G. Zech, Proc. IEEE 55, 109 (1967).

Upatnieks, J.

E. N. Leith and J. Upatnieks, J. Opt. Soc. Am. 52, 1123 (1962). 625

E. N. Leith and J. Upatnieks, J. Opt. Soc. Am. 53, 1377 (1963); 54, 1295 (1964).

Werts, A.

E. Spitz and A. Werts, Comp. Rend. 262, B758 (1966).

Westervelt, F. H.

G. W. Stroke, F. H. Westervelt, and R. G. Zech, Proc. IEEE 55, 109 (1967).

Winthrop, J. T.

J. T. Winthrop and C. R. Worthington, Phys. Letters 15, 124 (1965).

Worthington, C. R.

J. T. Winthrop and C. R. Worthington, Phys. Letters 15, 124 (1965).

Worthington, H. R.

H. R. Worthington, J. Opt. Soc. Am. 56, 1397 (1966).

Young, N. O.

L. Mertz and N. O. Young, in Proceedings of the Conference on Optical Instruments and Techniques in London 1961, K. J. Habell, Ed. (Chapman and Hall Ltd., London, 1962), p. 305.

Zech, R. G.

G. W. Stroke, F. H. Westervelt, and R. G. Zech, Proc. IEEE 55, 109 (1967).

Other

E. N. Leith and J. Upatnieks, J. Opt. Soc. Am. 53, 1377 (1963); 54, 1295 (1964).

M. Marchant and D. Knight, Opt. Acta 14, 199 (1967).

E. Spitz and A. Werts, Comp. Rend. 262, B758 (1966).

G. W. Stroke, F. H. Westervelt, and R. G. Zech, Proc. IEEE 55, 109 (1967).

L. Mertz and N. O. Young, in Proceedings of the Conference on Optical Instruments and Techniques in London 1961, K. J. Habell, Ed. (Chapman and Hall Ltd., London, 1962), p. 305.

A. W. Lohmann, J. Opt. Soc. Am. 55, 1555 (1965).

J. T. Winthrop and C. R. Worthington, Phys. Letters 15, 124 (1965).

G. W. Stroke and R. C. Restrick, Appl. Phys. Letters 7, 229 (1965).

L. Mertz, Transformations in Optics John Wiley & Sons, New York, 1965), p. 110.

G. D. Cochran, J. Opt. Soc. Am. 56, 1513 (1966).

P. J. Peters, Appl. Phys. Letters 8, 209 (1966).

H. R. Worthington, J. Opt. Soc. Am. 56, 1397 (1966).

W. D. Montgomery, J. Opt. Soc. Am. 56, 1769 (1966),

A. Kozma and N. Massey, J. Opt. Soc. Am. 56, 537A (1966).

E. N. Leith and J. Upatnieks, J. Opt. Soc. Am. 52, 1123 (1962). 625

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