Abstract

Dependence of the moisture of the plate on the hologram characteristics is studied for methylene blue dichromated gelatin. The maximum diffraction efficiency increases, and the exposure to obtain a sensitized amount of diffraction efficiency is reduced for the red light when the moisture of the gelatin layer is certain controlled during exposure. The photochemical reaction of the plate is briefly discussed, and the properly result of the double exposed hologram is also presented.

© 1990 Optical Society of America

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References

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  1. T. A. Shankoff, “Phase Holograms in Dichromated Gelatin,” Appl. Opt. 7, 2101–2105 (1968).
    [CrossRef] [PubMed]
  2. T. Kubota, T. Ose, M. Sasaki, K. Honda, “Hologram Formation with Red Light in Methylene Blue Sensitized Dichromated Gelatin,” Appl. Opt. 15, 556–558 (1976).
    [CrossRef] [PubMed]
  3. T. Kubota, T. Ose, “Methods of Increasing the Sensitivity of Methylene Blue Sensitized Dichromated Gelatin,” Appl. Opt. 18, 2538–2539 (1979).
    [CrossRef]
  4. R. Changkakoti, S. V. Pappu, “Study on the pH Dependence of Diffraction Efficiency of Phase Holograms in Dye Sensitized Dichromated Gelatin,” Appl. Opt. 25, 798–801 (1986).
    [CrossRef] [PubMed]
  5. N. Capolla, R. A. Lessard, “Processing of Holograms Recorded in Methylene Blue Sensitized Gelatin,” Appl. Opt. 27, 3008–3012 (1988).
    [CrossRef] [PubMed]
  6. M. Sasaki, K. Honda, S. Kikuchi, “Studies on Photosensitive Dichromated Materials,” Report of the Institute of Industrial Science, U. Tokyo27, 1–58 (1978).
  7. B. J. Chang, “Dichromated Gelatin Holograms and Their Applications,” Opt. Eng. 19, 642–648 (1980).
  8. M. Sasaki, N. Sakai, S. Kikuchi, K. Honda, “Spectral Sensitization of Photoreduction of Aqueous Ammonium Dichromate Solution by Methylene Blue—pH Dependence and Quantum Yields,” J. Chem. Soc. Jpn. No. 6, 895–900 (1976) (in Japanese).
  9. Reference 8, pp. 886–893.

1988

1986

1980

B. J. Chang, “Dichromated Gelatin Holograms and Their Applications,” Opt. Eng. 19, 642–648 (1980).

1979

1976

M. Sasaki, N. Sakai, S. Kikuchi, K. Honda, “Spectral Sensitization of Photoreduction of Aqueous Ammonium Dichromate Solution by Methylene Blue—pH Dependence and Quantum Yields,” J. Chem. Soc. Jpn. No. 6, 895–900 (1976) (in Japanese).

T. Kubota, T. Ose, M. Sasaki, K. Honda, “Hologram Formation with Red Light in Methylene Blue Sensitized Dichromated Gelatin,” Appl. Opt. 15, 556–558 (1976).
[CrossRef] [PubMed]

1968

Capolla, N.

Chang, B. J.

B. J. Chang, “Dichromated Gelatin Holograms and Their Applications,” Opt. Eng. 19, 642–648 (1980).

Changkakoti, R.

Honda, K.

T. Kubota, T. Ose, M. Sasaki, K. Honda, “Hologram Formation with Red Light in Methylene Blue Sensitized Dichromated Gelatin,” Appl. Opt. 15, 556–558 (1976).
[CrossRef] [PubMed]

M. Sasaki, N. Sakai, S. Kikuchi, K. Honda, “Spectral Sensitization of Photoreduction of Aqueous Ammonium Dichromate Solution by Methylene Blue—pH Dependence and Quantum Yields,” J. Chem. Soc. Jpn. No. 6, 895–900 (1976) (in Japanese).

M. Sasaki, K. Honda, S. Kikuchi, “Studies on Photosensitive Dichromated Materials,” Report of the Institute of Industrial Science, U. Tokyo27, 1–58 (1978).

Kikuchi, S.

M. Sasaki, N. Sakai, S. Kikuchi, K. Honda, “Spectral Sensitization of Photoreduction of Aqueous Ammonium Dichromate Solution by Methylene Blue—pH Dependence and Quantum Yields,” J. Chem. Soc. Jpn. No. 6, 895–900 (1976) (in Japanese).

M. Sasaki, K. Honda, S. Kikuchi, “Studies on Photosensitive Dichromated Materials,” Report of the Institute of Industrial Science, U. Tokyo27, 1–58 (1978).

Kubota, T.

Lessard, R. A.

Ose, T.

Pappu, S. V.

Sakai, N.

M. Sasaki, N. Sakai, S. Kikuchi, K. Honda, “Spectral Sensitization of Photoreduction of Aqueous Ammonium Dichromate Solution by Methylene Blue—pH Dependence and Quantum Yields,” J. Chem. Soc. Jpn. No. 6, 895–900 (1976) (in Japanese).

Sasaki, M.

M. Sasaki, N. Sakai, S. Kikuchi, K. Honda, “Spectral Sensitization of Photoreduction of Aqueous Ammonium Dichromate Solution by Methylene Blue—pH Dependence and Quantum Yields,” J. Chem. Soc. Jpn. No. 6, 895–900 (1976) (in Japanese).

T. Kubota, T. Ose, M. Sasaki, K. Honda, “Hologram Formation with Red Light in Methylene Blue Sensitized Dichromated Gelatin,” Appl. Opt. 15, 556–558 (1976).
[CrossRef] [PubMed]

M. Sasaki, K. Honda, S. Kikuchi, “Studies on Photosensitive Dichromated Materials,” Report of the Institute of Industrial Science, U. Tokyo27, 1–58 (1978).

Shankoff, T. A.

Appl. Opt.

J. Chem. Soc. Jpn.

M. Sasaki, N. Sakai, S. Kikuchi, K. Honda, “Spectral Sensitization of Photoreduction of Aqueous Ammonium Dichromate Solution by Methylene Blue—pH Dependence and Quantum Yields,” J. Chem. Soc. Jpn. No. 6, 895–900 (1976) (in Japanese).

Opt. Eng.

B. J. Chang, “Dichromated Gelatin Holograms and Their Applications,” Opt. Eng. 19, 642–648 (1980).

Other

M. Sasaki, K. Honda, S. Kikuchi, “Studies on Photosensitive Dichromated Materials,” Report of the Institute of Industrial Science, U. Tokyo27, 1–58 (1978).

Reference 8, pp. 886–893.

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Figures (5)

Fig. 1
Fig. 1

Relationship between the moisture of the MBDCG layer and the relative humidity in the thermohygrostat. The temperature in the thermohygrostat is 20°C.

Fig. 2
Fig. 2

Main part of the UV-350A spectrophotometer for measuring the reconstruction characteristics of the hologram.

Fig. 3
Fig. 3

Dependence of the diffraction efficiency on the moisture for different exposure energies and different recording wavelengths.

Fig. 4
Fig. 4

Dependence of the diffraction efficiency on the exposure for different moisture and different recording wavelengths.

Fig. 5
Fig. 5

Typical example of the wavelength selectivity curve for a double exposed hologram. Recording wavelengths are 647.1 and 514.5 nm.

Tables (2)

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Table I Procedure for Making the MBDCG Hologram

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Table II Diffraction Efficiency(%) as a Function of Moisture and Exposure

Equations (7)

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Y = ( Z - Z 0 ) / Z ,
Cr 6 + h ν excited Cr 6 + ,
excited Cr 6 + + R Cr 3 + + R ,
Cr 3 + + gelatin Cr 3 + - gelatin ( cross - linking ) ,
MB + h ν excited MB ,
Cr 6 + + leuco MB Cr 3 + + MB ,
Cr 3 + + gelatin Cr 3 + - gelatin ( cross - linking ) .

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