Abstract

In this paper we describe a simple method of characterizing the efficiency of bleaching holographic gratings by means of the measurement of the index image for zero frequency. It is applied to the bleaching method by immersion in a bromide atmosphere.

© 1984 Optical Society of America

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References

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  1. M. G. Moharam, T. K. Gaylord, J. Opt. Soc. Am. 71, 811 (1981).
    [CrossRef]
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    [CrossRef]
  5. H. Kogelnik, Bell Syst. Tech. J. 48, 2909 (1969).
  6. R. L. van Renesse, F. A. J. Bouts, Optik 38, 156 (1973).
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    [CrossRef] [PubMed]
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1983

1981

1974

1973

R. L. van Renesse, F. A. J. Bouts, Optik 38, 156 (1973).

1972

1969

H. Kogelnik, Bell Syst. Tech. J. 48, 2909 (1969).

1968

1967

H. von Hannes, Optik 26, 363 (1967).

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Figures (6)

Fig. 1
Fig. 1

Maximum zone must lose half of its excess of gelatin until the thickness becomes uniform and only the index can modulate the phase.

Fig. 2
Fig. 2

Optical density vs exposure curve for 8E-75 plates with emulsion thicknesses of 7 and 15 μm.

Fig. 3
Fig. 3

Interferometer we used. The hologram CH cancels the aberrations introduced by the liquid gate LG.

Fig. 4
Fig. 4

Interference field; the circular sample is clearly visible. As can be seen, if lens L is used the fringe contours can be easily tracked.

Fig. 5
Fig. 5

Experimental measurement of the optical path modulation vs that before bleaching optical density for the 7-μm emulsion (8E-75) surrounded by air (upper curve) and by liquid of ng index (lower curve).

Fig. 6
Fig. 6

Experimental measurement of the optical path modulation vs that before bleaching optical density for the 15-μm emulsion (8E-75B) surrounded by air (upper curve) and by liquid of ng index (lower curve).

Tables (1)

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Table I Parameters for Predicting the Efficiency with our Model (Column 8); in Column 9 the Measured Efficiency Less Losses

Equations (16)

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Δ φ Δ D = k c q α b - k q m e V b ( n m - n 0 ) ,
n 2 = 1 + 8 π 3 i α i N i 1 - 4 π 3 i α i N i .
Δ φ Δ D = k c q α b .
Δ φ Δ D = h + 1 - n 0 n m - 1 ( h - h ) ,
k = h c q α b - q m e V b ( 1 - n 0 ) ;             m e = h - h 0.52 k q V b ,
Δ d = A b 2 + A b 1 2 V b ,
d = d 0 + A b 2 + A b 1 2 V b ,
Δ φ Δ D = c q a ( α b - α g m e V b V g ) ,
h = Δ φ Δ D = 1 a [ c q α b - q m e V b ( n m - n 0 ) ] ,
h = c q a ( α b - m e α g V b V g ) ,
I = A r 2 + A 0 2 + A r A 0 exp { - i [ α x - ϕ ( x , y ) } + A r A 0 exp { i [ α x - ϕ ( x , y ) ] }
W r A r exp ( - i α x ) .
η = sin 2 [ π δ 1 cos θ 0 ] ,
η = I 1 I 1 + I 0 ,
Δ φ Δ D = k c q α b ,
Δ φ Δ D = k c q α b [ 1 - m e V b c α b ( n m - n 0 ) ] ,

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