Abstract

We present a multilayered optical memory for use in reading data with a confocal reflection microscope system. We use a recording medium in which photosensitive thin films and nonphotosensitive transparent films are stacked alternately. Since the photosensitive films are thinner than the depth of focus of the recording beam, the spatial frequency distribution of the recorded bit data is extended in the axial direction. The extended distribution overlaps the coherent optical transfer function of the reflection-type confocal microscope. Urethane–urea copolymer film is used as a photosensitive material. The recording and reading of two layers are demonstrated.

© 1998 Optical Society of America

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  1. D. A. Parthenopoulos and P. M. Rentzepis, Science 24, 843 (1989).
  2. J. H. Strickler and W. W. Webb, Opt. Lett. 16, 1780 (1991).
  3. S. Kawata, T. Tanaka, Y. Hashimoto, and Y. Kawata, Proc. SPIE 2042, 314 (1993).
  4. Y. Kawata, H. Ishitobi, and S. Kawata, Opt. Lett. 23, 756 (1998).
  5. T. Wilson, Y. Kawata, and S. Kawata, Opt. Lett. 21, 1003 (1996).
  6. A. Toriumi, S. Kawata, and M. Gu, in Proceedings of the 21st Meeting of the Japan Society for Laser Microscopy (Japan Society for Laser Microscopy, Tokyo, 1998), p. 24.
  7. N. Streibl, J. Opt. Soc. Am. A 2, 121 (1985).
  8. C. J. R. Sheppard, Optik 74, 128 (1986).
  9. C. J. R. Sheppard, M. Gu, and X. Q. Mao, Opt. Commun. 81, 281 (1991).
  10. O. Watanabe, M. Tsuchimori, A. Okada, and H. Ito, Appl. Phys. Lett. 71, 750 (1997).
  11. M. Tsuchimori, O. Watanabe, and A. Okada, J. Mater. Chem. 7, 877 (1997).

1998

A. Toriumi, S. Kawata, and M. Gu, in Proceedings of the 21st Meeting of the Japan Society for Laser Microscopy (Japan Society for Laser Microscopy, Tokyo, 1998), p. 24.

Y. Kawata, H. Ishitobi, and S. Kawata, Opt. Lett. 23, 756 (1998).

1997

O. Watanabe, M. Tsuchimori, A. Okada, and H. Ito, Appl. Phys. Lett. 71, 750 (1997).

M. Tsuchimori, O. Watanabe, and A. Okada, J. Mater. Chem. 7, 877 (1997).

1996

1993

S. Kawata, T. Tanaka, Y. Hashimoto, and Y. Kawata, Proc. SPIE 2042, 314 (1993).

1991

J. H. Strickler and W. W. Webb, Opt. Lett. 16, 1780 (1991).

C. J. R. Sheppard, M. Gu, and X. Q. Mao, Opt. Commun. 81, 281 (1991).

1989

D. A. Parthenopoulos and P. M. Rentzepis, Science 24, 843 (1989).

1986

C. J. R. Sheppard, Optik 74, 128 (1986).

1985

N. Streibl, J. Opt. Soc. Am. A 2, 121 (1985).

Gu, M.

A. Toriumi, S. Kawata, and M. Gu, in Proceedings of the 21st Meeting of the Japan Society for Laser Microscopy (Japan Society for Laser Microscopy, Tokyo, 1998), p. 24.

C. J. R. Sheppard, M. Gu, and X. Q. Mao, Opt. Commun. 81, 281 (1991).

Hashimoto, Y.

S. Kawata, T. Tanaka, Y. Hashimoto, and Y. Kawata, Proc. SPIE 2042, 314 (1993).

Ishitobi, H.

Ito, H.

O. Watanabe, M. Tsuchimori, A. Okada, and H. Ito, Appl. Phys. Lett. 71, 750 (1997).

Kawata, S.

Y. Kawata, H. Ishitobi, and S. Kawata, Opt. Lett. 23, 756 (1998).

A. Toriumi, S. Kawata, and M. Gu, in Proceedings of the 21st Meeting of the Japan Society for Laser Microscopy (Japan Society for Laser Microscopy, Tokyo, 1998), p. 24.

T. Wilson, Y. Kawata, and S. Kawata, Opt. Lett. 21, 1003 (1996).

S. Kawata, T. Tanaka, Y. Hashimoto, and Y. Kawata, Proc. SPIE 2042, 314 (1993).

Kawata, Y.

Mao, X. Q.

C. J. R. Sheppard, M. Gu, and X. Q. Mao, Opt. Commun. 81, 281 (1991).

Okada, A.

O. Watanabe, M. Tsuchimori, A. Okada, and H. Ito, Appl. Phys. Lett. 71, 750 (1997).

M. Tsuchimori, O. Watanabe, and A. Okada, J. Mater. Chem. 7, 877 (1997).

Parthenopoulos, D. A.

D. A. Parthenopoulos and P. M. Rentzepis, Science 24, 843 (1989).

Rentzepis, P. M.

D. A. Parthenopoulos and P. M. Rentzepis, Science 24, 843 (1989).

Sheppard, C. J. R.

C. J. R. Sheppard, M. Gu, and X. Q. Mao, Opt. Commun. 81, 281 (1991).

C. J. R. Sheppard, Optik 74, 128 (1986).

Streibl, N.

N. Streibl, J. Opt. Soc. Am. A 2, 121 (1985).

Strickler, J. H.

Tanaka, T.

S. Kawata, T. Tanaka, Y. Hashimoto, and Y. Kawata, Proc. SPIE 2042, 314 (1993).

Toriumi, A.

A. Toriumi, S. Kawata, and M. Gu, in Proceedings of the 21st Meeting of the Japan Society for Laser Microscopy (Japan Society for Laser Microscopy, Tokyo, 1998), p. 24.

Tsuchimori, M.

M. Tsuchimori, O. Watanabe, and A. Okada, J. Mater. Chem. 7, 877 (1997).

O. Watanabe, M. Tsuchimori, A. Okada, and H. Ito, Appl. Phys. Lett. 71, 750 (1997).

Watanabe, O.

M. Tsuchimori, O. Watanabe, and A. Okada, J. Mater. Chem. 7, 877 (1997).

O. Watanabe, M. Tsuchimori, A. Okada, and H. Ito, Appl. Phys. Lett. 71, 750 (1997).

Webb, W. W.

Wilson, T.

Appl. Phys. Lett.

O. Watanabe, M. Tsuchimori, A. Okada, and H. Ito, Appl. Phys. Lett. 71, 750 (1997).

J. Mater. Chem.

M. Tsuchimori, O. Watanabe, and A. Okada, J. Mater. Chem. 7, 877 (1997).

J. Opt. Soc. Am. A

N. Streibl, J. Opt. Soc. Am. A 2, 121 (1985).

Opt. Commun.

C. J. R. Sheppard, M. Gu, and X. Q. Mao, Opt. Commun. 81, 281 (1991).

Opt. Lett.

Optik

C. J. R. Sheppard, Optik 74, 128 (1986).

Proc. SPIE

S. Kawata, T. Tanaka, Y. Hashimoto, and Y. Kawata, Proc. SPIE 2042, 314 (1993).

Science

D. A. Parthenopoulos and P. M. Rentzepis, Science 24, 843 (1989).

Other

A. Toriumi, S. Kawata, and M. Gu, in Proceedings of the 21st Meeting of the Japan Society for Laser Microscopy (Japan Society for Laser Microscopy, Tokyo, 1998), p. 24.

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