Abstract

A real-time electron-beam-addressed spatial light modulator-based holographic imaging system has recently been proposed. We present results of two-dimensional holographic imaging and further demonstrate that the proposed system can be readily adaptable to automation by using digital computers for robust holographic imaging. Specifically, by nonlinear processing of a digitally stored hologram, fringe contrast enhancement has been achieved.

© 1993 Optical Society of America

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References

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  1. T.-C. Poon, J. Opt. Soc. Am. A 2, 521 (1985).
    [CrossRef]
  2. B. D. Duncan, T.-C. Poon, J. Opt. Soc. Am. A 9, 229 (1992).
    [CrossRef]
  3. B. D. Duncan, “Investigation of real-time optical scanning holography,” Ph.D. dissertation (Virginia Polytechnic Institute and State University, Blacksburg, Va., 1991).
  4. G. Indebetouw, T.-C. Poon, Opt. Eng. 31, 2159 (1992).
    [CrossRef]
  5. B. D. Duncan, T.-C. Poon, M. H. Wu, K. Shinoda, Y. Suzuki, J. Mod. Opt. 39, 63 (1992).
    [CrossRef]
  6. Product information sheet for EBSLM Model X3636, provided by Hamamatsu Photonics K.K., Japan, and Hamamatsu Corporation, Bridgewater, N.J., 1989.
  7. T.-C. Poon, B. D. Duncan, M. H. Wu, K. Shinoda, Y. Suzuki, Jpn. J. Appl. Phys. 29, L1840 (1990).
    [CrossRef]

1992

G. Indebetouw, T.-C. Poon, Opt. Eng. 31, 2159 (1992).
[CrossRef]

B. D. Duncan, T.-C. Poon, M. H. Wu, K. Shinoda, Y. Suzuki, J. Mod. Opt. 39, 63 (1992).
[CrossRef]

B. D. Duncan, T.-C. Poon, J. Opt. Soc. Am. A 9, 229 (1992).
[CrossRef]

1990

T.-C. Poon, B. D. Duncan, M. H. Wu, K. Shinoda, Y. Suzuki, Jpn. J. Appl. Phys. 29, L1840 (1990).
[CrossRef]

1985

Duncan, B. D.

B. D. Duncan, T.-C. Poon, M. H. Wu, K. Shinoda, Y. Suzuki, J. Mod. Opt. 39, 63 (1992).
[CrossRef]

B. D. Duncan, T.-C. Poon, J. Opt. Soc. Am. A 9, 229 (1992).
[CrossRef]

T.-C. Poon, B. D. Duncan, M. H. Wu, K. Shinoda, Y. Suzuki, Jpn. J. Appl. Phys. 29, L1840 (1990).
[CrossRef]

B. D. Duncan, “Investigation of real-time optical scanning holography,” Ph.D. dissertation (Virginia Polytechnic Institute and State University, Blacksburg, Va., 1991).

Indebetouw, G.

G. Indebetouw, T.-C. Poon, Opt. Eng. 31, 2159 (1992).
[CrossRef]

Poon, T.-C.

G. Indebetouw, T.-C. Poon, Opt. Eng. 31, 2159 (1992).
[CrossRef]

B. D. Duncan, T.-C. Poon, J. Opt. Soc. Am. A 9, 229 (1992).
[CrossRef]

B. D. Duncan, T.-C. Poon, M. H. Wu, K. Shinoda, Y. Suzuki, J. Mod. Opt. 39, 63 (1992).
[CrossRef]

T.-C. Poon, B. D. Duncan, M. H. Wu, K. Shinoda, Y. Suzuki, Jpn. J. Appl. Phys. 29, L1840 (1990).
[CrossRef]

T.-C. Poon, J. Opt. Soc. Am. A 2, 521 (1985).
[CrossRef]

Shinoda, K.

B. D. Duncan, T.-C. Poon, M. H. Wu, K. Shinoda, Y. Suzuki, J. Mod. Opt. 39, 63 (1992).
[CrossRef]

T.-C. Poon, B. D. Duncan, M. H. Wu, K. Shinoda, Y. Suzuki, Jpn. J. Appl. Phys. 29, L1840 (1990).
[CrossRef]

Suzuki, Y.

B. D. Duncan, T.-C. Poon, M. H. Wu, K. Shinoda, Y. Suzuki, J. Mod. Opt. 39, 63 (1992).
[CrossRef]

T.-C. Poon, B. D. Duncan, M. H. Wu, K. Shinoda, Y. Suzuki, Jpn. J. Appl. Phys. 29, L1840 (1990).
[CrossRef]

Wu, M. H.

B. D. Duncan, T.-C. Poon, M. H. Wu, K. Shinoda, Y. Suzuki, J. Mod. Opt. 39, 63 (1992).
[CrossRef]

T.-C. Poon, B. D. Duncan, M. H. Wu, K. Shinoda, Y. Suzuki, Jpn. J. Appl. Phys. 29, L1840 (1990).
[CrossRef]

J. Mod. Opt.

B. D. Duncan, T.-C. Poon, M. H. Wu, K. Shinoda, Y. Suzuki, J. Mod. Opt. 39, 63 (1992).
[CrossRef]

J. Opt. Soc. Am. A

Jpn. J. Appl. Phys.

T.-C. Poon, B. D. Duncan, M. H. Wu, K. Shinoda, Y. Suzuki, Jpn. J. Appl. Phys. 29, L1840 (1990).
[CrossRef]

Opt. Eng.

G. Indebetouw, T.-C. Poon, Opt. Eng. 31, 2159 (1992).
[CrossRef]

Other

B. D. Duncan, “Investigation of real-time optical scanning holography,” Ph.D. dissertation (Virginia Polytechnic Institute and State University, Blacksburg, Va., 1991).

Product information sheet for EBSLM Model X3636, provided by Hamamatsu Photonics K.K., Japan, and Hamamatsu Corporation, Bridgewater, N.J., 1989.

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Figures (4)

Fig. 1
Fig. 1

Real-time holographic imaging system. The dashed box enclosing the 2-D display and the CCTV represents an intermediate display process discussed in the text.

Fig. 2
Fig. 2

Hologram of the letter K. (b) Real-image reconstruction of the hologram shown in (a) using an EBSLM.

Fig. 3
Fig. 3

Background displayed on 2-D display when the photodetector is turned off.

Fig. 4
Fig. 4

Nonlinear processed hologram. The original hologram is shown in Fig. 2(a). Processing included background subtraction and thresholding as discussed in the text, (b) Real-image reconstruction of the hologram shown in (a).

Equations (4)

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i ( t ) = D I ( x , y ) h [ x x s ( t ) , y y s ( t ) ] d x d y ,
h ( x , y ) = | A exp ( j ω t ) + B exp [ j k 0 2 z ( x 2 + y 2 ) ] × exp [ j ( ω + Ω ) t ] | 2 ,
h ( x , y ) = A 2 + B 2 + A B cos [ k 0 2 z ( x 2 + y 2 ) + Ω t ] ,
i d ( x , y ) cos { k 0 2 z [ ( x x 0 ) 2 + ( y y 0 ) 2 ] } .

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