Abstract

We present a nonvolatile optically addressed spatial light modulator for use in optical processing and projection systems. The device utilizes the spatial nonvolatile switching of a ferroelectric liquid crystal addressed through a photoconducting medium. One obtains an analog representation similar to halftone printing by threshold switching of micro-optically modified pixel intensity profiles. An experimental demonstration of the device is described, together with qualitative and theoretical interpretation of the results.

© 1996 Optical Society of America

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References

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  1. C. S. Sexton, Proc. SPIE 684, 96 (1986).
  2. W. Li, R. Rice, G. Moddel, L. A. Pagano-Stauffer, M. A. Handschy, IEEE Trans. Electron Dev. 36, 2959 (1989).
    [CrossRef]
  3. K. K. Sharp, “Optical device and display device,” UK patent application9412347.8.
  4. M. G. Robinson, Opt. Lett. 17, 895 (1992).
    [CrossRef] [PubMed]
  5. F. Perennes, W. A. Crossland, D. Kozlowski, Z. Y. Wu, Ferroelectrics 181, 129 (1996).
    [CrossRef]

1996 (1)

F. Perennes, W. A. Crossland, D. Kozlowski, Z. Y. Wu, Ferroelectrics 181, 129 (1996).
[CrossRef]

1992 (1)

1989 (1)

W. Li, R. Rice, G. Moddel, L. A. Pagano-Stauffer, M. A. Handschy, IEEE Trans. Electron Dev. 36, 2959 (1989).
[CrossRef]

1986 (1)

C. S. Sexton, Proc. SPIE 684, 96 (1986).

Crossland, W. A.

F. Perennes, W. A. Crossland, D. Kozlowski, Z. Y. Wu, Ferroelectrics 181, 129 (1996).
[CrossRef]

Handschy, M. A.

W. Li, R. Rice, G. Moddel, L. A. Pagano-Stauffer, M. A. Handschy, IEEE Trans. Electron Dev. 36, 2959 (1989).
[CrossRef]

Kozlowski, D.

F. Perennes, W. A. Crossland, D. Kozlowski, Z. Y. Wu, Ferroelectrics 181, 129 (1996).
[CrossRef]

Li, W.

W. Li, R. Rice, G. Moddel, L. A. Pagano-Stauffer, M. A. Handschy, IEEE Trans. Electron Dev. 36, 2959 (1989).
[CrossRef]

Moddel, G.

W. Li, R. Rice, G. Moddel, L. A. Pagano-Stauffer, M. A. Handschy, IEEE Trans. Electron Dev. 36, 2959 (1989).
[CrossRef]

Pagano-Stauffer, L. A.

W. Li, R. Rice, G. Moddel, L. A. Pagano-Stauffer, M. A. Handschy, IEEE Trans. Electron Dev. 36, 2959 (1989).
[CrossRef]

Perennes, F.

F. Perennes, W. A. Crossland, D. Kozlowski, Z. Y. Wu, Ferroelectrics 181, 129 (1996).
[CrossRef]

Rice, R.

W. Li, R. Rice, G. Moddel, L. A. Pagano-Stauffer, M. A. Handschy, IEEE Trans. Electron Dev. 36, 2959 (1989).
[CrossRef]

Robinson, M. G.

Sexton, C. S.

C. S. Sexton, Proc. SPIE 684, 96 (1986).

Sharp, K. K.

K. K. Sharp, “Optical device and display device,” UK patent application9412347.8.

Wu, Z. Y.

F. Perennes, W. A. Crossland, D. Kozlowski, Z. Y. Wu, Ferroelectrics 181, 129 (1996).
[CrossRef]

Ferroelectrics (1)

F. Perennes, W. A. Crossland, D. Kozlowski, Z. Y. Wu, Ferroelectrics 181, 129 (1996).
[CrossRef]

IEEE Trans. Electron Dev. (1)

W. Li, R. Rice, G. Moddel, L. A. Pagano-Stauffer, M. A. Handschy, IEEE Trans. Electron Dev. 36, 2959 (1989).
[CrossRef]

Opt. Lett. (1)

Proc. SPIE (1)

C. S. Sexton, Proc. SPIE 684, 96 (1986).

Other (1)

K. K. Sharp, “Optical device and display device,” UK patent application9412347.8.

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Figures (4)

Fig. 1
Fig. 1

System schematic showing basic operation.

Fig. 2
Fig. 2

Modulation of the FLC for various write-beam intensities as viewed by the CCD camera. FLC speckle caused by liquid-crystal reorganization is clearly visible.

Fig. 3
Fig. 3

Experimentally measured reflectivity as a function of write-beam intensity. Also shown is a theoretical fit to this curve based on the theory presented in this Letter.

Fig. 4
Fig. 4

Schematic of an example image-relay system using an OASLM. RGB, red–green–blue.

Equations (8)

Equations on this page are rendered with MathJax. Learn more.

I 0 f ( r th ) = I th
R π r th 2 = π [ f 1 ( I th I 0 ) ] 2 .
f ( r ) = y = A exp ( α r 2 ) ,
f 1 ( y ) = [ 1 α log e ( y A ) ] 1 / 2 .
R π α log e ( I th AI 0 ) = B ( log e I 0 + C ) ,
R I 0 .
[ f 1 ( I th / I 0 ) ] 2 I 0 .
f ( r ) 1 / r 2 .

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