Abstract

Linearly polarized light passing through a several micron thick magnetooptic film in the inhomogeneous magnetization state is split into a linearly polarized central beam and linearly polarized first and higher order diverging rings. The polarization of the central output beam lies in the same direction as the linearly polarized input, while the polarization of the diverging rings lies in a direction orthogonal to the input plane of polarization. The effect is described, and applications of the effect are discussed.

© 1989 Optical Society of America

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References

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  1. W. E. Ross, D. Psaltis, R. H. Anderson, “Two Dimensional MOSLM for Signal Processing,” Opt. Eng. 22, 485–490 (1983).
  2. D. L. Flannery, A. M. Biernacki, J. S. Loomis, S. L. Cartwright, “Real-Time Coherent Correlator Using Binary Magnetooptic Spatial Light Modulators at Input and Fourier Planes,” Appl. Opt. 25, 466–466 (1986).
    [CrossRef] [PubMed]
  3. D. M. Cottrell, R. A. Lilly, J. A. Davis, T. Day, “Optical Correlator Performance of Binary Phase-Only Filters Using Fourier and Hartley Transforms,” Appl. Opt. 26, 3755–3759 (1987).
    [CrossRef] [PubMed]
  4. B. J. Javidi, C. J. Kuo, Y. F. Chen, J. E. Ludman, “Color Object Identification by Monochromatic Binary Correlation,” Appl. Opt. 27, 949–953 (1989).
    [CrossRef]

1989

1987

1986

1983

W. E. Ross, D. Psaltis, R. H. Anderson, “Two Dimensional MOSLM for Signal Processing,” Opt. Eng. 22, 485–490 (1983).

Anderson, R. H.

W. E. Ross, D. Psaltis, R. H. Anderson, “Two Dimensional MOSLM for Signal Processing,” Opt. Eng. 22, 485–490 (1983).

Biernacki, A. M.

Cartwright, S. L.

Chen, Y. F.

Cottrell, D. M.

Davis, J. A.

Day, T.

Flannery, D. L.

Javidi, B. J.

Kuo, C. J.

Lilly, R. A.

Loomis, J. S.

Ludman, J. E.

Psaltis, D.

W. E. Ross, D. Psaltis, R. H. Anderson, “Two Dimensional MOSLM for Signal Processing,” Opt. Eng. 22, 485–490 (1983).

Ross, W. E.

W. E. Ross, D. Psaltis, R. H. Anderson, “Two Dimensional MOSLM for Signal Processing,” Opt. Eng. 22, 485–490 (1983).

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Figures (4)

Fig. 1
Fig. 1

Operation of magnetooptic spatial light modulator.

Fig. 2
Fig. 2

Inhomogeneous state optical output structure: (a) inhomogeneous state optical output (no output polarizer); (b) output component polarized in the same direction as the input polarization; (c) output component polarized perpendicular to the input polarization angle.

Fig. 3
Fig. 3

Top to bottom, linearly polarized incident light is rotated positively, not at all, and negatively by pixels switched in the plus homogeneous, inhomogeneous, and minus homogeneous state, respectively. The output polarizer Pout oriented perpendicular to the input polarization angle enacts plus one, zero, and minus one modulation on the three respective outputs.

Fig. 4
Fig. 4

Top to bottom: linearly polarized incident light is rotated positively, not at all, and negatively by pixels switched in the plus homogeneous, inhomogeneous, and minus homogeneous state, respectively. The output polarizer Pout, here oriented perpendicular to the output minus homogeneous angle, enacts plus one, intermediate, and zero modulation on the three respective outputs.

Tables (1)

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Table I One Zero Minus One Contrast Ratios Obtained with Different Wavelengths, Array Configurations, and Spatial Filtering Techniques

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