Abstract

A three-dimensional (3D) rewritable optical memory using photochromic material is described for high-density memory. The bits are recorded in a 3D volume of photochromic material. A transformation of the photochromic molecule between two isomers with different absorption spectra can be stimulated by irradiation with appropriate wavelengths. We show that a nondestructive readout of photochromic memory is possible by use of a small difference in the refractive index of the photochromic isomers in the near-IR range. For this purpose a near-IR laser-scan differential phase-contrast microscope is used. Experimental results of 3D recording and nondestructive reading are presented.

© 1997 Optical Society of America

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  1. J. H. Strickler and W. W. Webb, Opt. Lett. 16, 1780 (1991).
    [CrossRef] [PubMed]
  2. S. Kawata, T. Tanaka, Y. Hashimoto, and Y. Kawata, Proc. SPIE 2042, 314 (1993).
    [CrossRef]
  3. Y. Kawata, H. Ueki, Y. Hashimoto, and S. Kawata, Appl. Opt. 34, 4105 (1995).
    [CrossRef] [PubMed]
  4. H. Ueki, Y. Kawata, and S. Kawata, Appl. Opt. 35, 2457 (1996).
    [CrossRef] [PubMed]
  5. D. A. Parthenopoulos and P. M. Rentzepis, Science 245, 843 (1989).
    [CrossRef] [PubMed]
  6. N. Tamaoki and T. Yamaoka, J. Chem. Soc. Perkin Trans. 2, 873 (1991).
    [CrossRef]
  7. M. Irie, O. Miyatake, and K. Uchida, J. Am. Chem. Soc. 114, 8715 (1992).
    [CrossRef]
  8. M. Uchida and M. Irie, J. Am. Chem. Soc. 115, 6442 (1993).
    [CrossRef]
  9. H. Kano, K. Wada, and S. Kawata, in Extended Abstracts of the 43rd Spring Meeting of the Japan Society of Applied Physics and Related Societies (Japan Society of Applied Physics and Related Societies, Tokyo, 1996), p. 866.
  10. Y. Kawata, R. Juskaitis, T. Tanaka, T. Wilson, and S. Kawata, Appl. Opt. 35, 2466 (1996).
    [CrossRef] [PubMed]
  11. K. Uchida, S. Nakamura, and M. Irie, Bull. Chem. Soc. Jpn. 65, 430 (1992).
    [CrossRef]

1996 (2)

1995 (1)

1993 (2)

M. Uchida and M. Irie, J. Am. Chem. Soc. 115, 6442 (1993).
[CrossRef]

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

1992 (2)

K. Uchida, S. Nakamura, and M. Irie, Bull. Chem. Soc. Jpn. 65, 430 (1992).
[CrossRef]

M. Irie, O. Miyatake, and K. Uchida, J. Am. Chem. Soc. 114, 8715 (1992).
[CrossRef]

1991 (2)

N. Tamaoki and T. Yamaoka, J. Chem. Soc. Perkin Trans. 2, 873 (1991).
[CrossRef]

J. H. Strickler and W. W. Webb, Opt. Lett. 16, 1780 (1991).
[CrossRef] [PubMed]

1989 (1)

D. A. Parthenopoulos and P. M. Rentzepis, Science 245, 843 (1989).
[CrossRef] [PubMed]

Hashimoto, Y.

Y. Kawata, H. Ueki, Y. Hashimoto, and S. Kawata, Appl. Opt. 34, 4105 (1995).
[CrossRef] [PubMed]

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

Irie, M.

M. Uchida and M. Irie, J. Am. Chem. Soc. 115, 6442 (1993).
[CrossRef]

M. Irie, O. Miyatake, and K. Uchida, J. Am. Chem. Soc. 114, 8715 (1992).
[CrossRef]

K. Uchida, S. Nakamura, and M. Irie, Bull. Chem. Soc. Jpn. 65, 430 (1992).
[CrossRef]

Juskaitis, R.

Kano, H.

H. Kano, K. Wada, and S. Kawata, in Extended Abstracts of the 43rd Spring Meeting of the Japan Society of Applied Physics and Related Societies (Japan Society of Applied Physics and Related Societies, Tokyo, 1996), p. 866.

Kawata, S.

Y. Kawata, R. Juskaitis, T. Tanaka, T. Wilson, and S. Kawata, Appl. Opt. 35, 2466 (1996).
[CrossRef] [PubMed]

H. Ueki, Y. Kawata, and S. Kawata, Appl. Opt. 35, 2457 (1996).
[CrossRef] [PubMed]

Y. Kawata, H. Ueki, Y. Hashimoto, and S. Kawata, Appl. Opt. 34, 4105 (1995).
[CrossRef] [PubMed]

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

H. Kano, K. Wada, and S. Kawata, in Extended Abstracts of the 43rd Spring Meeting of the Japan Society of Applied Physics and Related Societies (Japan Society of Applied Physics and Related Societies, Tokyo, 1996), p. 866.

Kawata, Y.

Miyatake, O.

M. Irie, O. Miyatake, and K. Uchida, J. Am. Chem. Soc. 114, 8715 (1992).
[CrossRef]

Nakamura, S.

K. Uchida, S. Nakamura, and M. Irie, Bull. Chem. Soc. Jpn. 65, 430 (1992).
[CrossRef]

Parthenopoulos, D. A.

D. A. Parthenopoulos and P. M. Rentzepis, Science 245, 843 (1989).
[CrossRef] [PubMed]

Rentzepis, P. M.

D. A. Parthenopoulos and P. M. Rentzepis, Science 245, 843 (1989).
[CrossRef] [PubMed]

Strickler, J. H.

Tamaoki, N.

N. Tamaoki and T. Yamaoka, J. Chem. Soc. Perkin Trans. 2, 873 (1991).
[CrossRef]

Tanaka, T.

Y. Kawata, R. Juskaitis, T. Tanaka, T. Wilson, and S. Kawata, Appl. Opt. 35, 2466 (1996).
[CrossRef] [PubMed]

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

Uchida, K.

K. Uchida, S. Nakamura, and M. Irie, Bull. Chem. Soc. Jpn. 65, 430 (1992).
[CrossRef]

M. Irie, O. Miyatake, and K. Uchida, J. Am. Chem. Soc. 114, 8715 (1992).
[CrossRef]

Uchida, M.

M. Uchida and M. Irie, J. Am. Chem. Soc. 115, 6442 (1993).
[CrossRef]

Ueki, H.

Wada, K.

H. Kano, K. Wada, and S. Kawata, in Extended Abstracts of the 43rd Spring Meeting of the Japan Society of Applied Physics and Related Societies (Japan Society of Applied Physics and Related Societies, Tokyo, 1996), p. 866.

Webb, W. W.

Wilson, T.

Yamaoka, T.

N. Tamaoki and T. Yamaoka, J. Chem. Soc. Perkin Trans. 2, 873 (1991).
[CrossRef]

Appl. Opt. (3)

Bull. Chem. Soc. Jpn. (1)

K. Uchida, S. Nakamura, and M. Irie, Bull. Chem. Soc. Jpn. 65, 430 (1992).
[CrossRef]

J. Am. Chem. Soc. (2)

M. Irie, O. Miyatake, and K. Uchida, J. Am. Chem. Soc. 114, 8715 (1992).
[CrossRef]

M. Uchida and M. Irie, J. Am. Chem. Soc. 115, 6442 (1993).
[CrossRef]

J. Chem. Soc. Perkin Trans. (1)

N. Tamaoki and T. Yamaoka, J. Chem. Soc. Perkin Trans. 2, 873 (1991).
[CrossRef]

Opt. Lett. (1)

Proc. SPIE (1)

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

Science (1)

D. A. Parthenopoulos and P. M. Rentzepis, Science 245, 843 (1989).
[CrossRef] [PubMed]

Other (1)

H. Kano, K. Wada, and S. Kawata, in Extended Abstracts of the 43rd Spring Meeting of the Japan Society of Applied Physics and Related Societies (Japan Society of Applied Physics and Related Societies, Tokyo, 1996), p. 866.

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Figures (5)

Fig. 1
Fig. 1

Photochromic reaction of 1,3,3-trimethylindolino-6-nitrobenzopyrylospiran (NSP). A and B are NSP isomers.

Fig. 2
Fig. 2

Absorption spectra of polystyrene film containing NSP before (A) and after (B) 442-nm light exposure.

Fig. 3
Fig. 3

Optical system for nondestructive readout of photochromic memory by near-IR differential phase contrast.

Fig. 4
Fig. 4

Optical setup for recording 3D bit information in photochromic memory.

Fig. 5
Fig. 5

Bit patterns read from photochromic memory by near-IR laser-scannning differential phase-contrast microscopy (a) first layer, (b) second layer. The bit interval is 5  µm, and the layer distance is 70  µm.

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