Abstract

Methods for preparing laminar phase diffraction gratings of up to 400 lines per in. are described. The grating is copied photomechanically from a master amplitude grating and the phase-reversing layer applied by vacuum evaporation. Silica is used for transmission and chromium for reflection gratings, the resultant optical elements being extremely robust and of a high degree of uniformity.

© 1960 Optical Society of America

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References

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  1. J. Dyson, Proc. Roy. Soc. (London) A248, 93 (1958).
  2. R. W. Wood, Phil. Mag. 45, 511 (1898).
  3. G. Hass, J. Am. Ceram. Soc. 33, 353 (1950).
    [Crossref]
  4. C. Weaver and P. Benjamin, Nature 182, 1149 (1958).
    [Crossref]

1958 (2)

J. Dyson, Proc. Roy. Soc. (London) A248, 93 (1958).

C. Weaver and P. Benjamin, Nature 182, 1149 (1958).
[Crossref]

1950 (1)

G. Hass, J. Am. Ceram. Soc. 33, 353 (1950).
[Crossref]

1898 (1)

R. W. Wood, Phil. Mag. 45, 511 (1898).

Benjamin, P.

C. Weaver and P. Benjamin, Nature 182, 1149 (1958).
[Crossref]

Dyson, J.

J. Dyson, Proc. Roy. Soc. (London) A248, 93 (1958).

Hass, G.

G. Hass, J. Am. Ceram. Soc. 33, 353 (1950).
[Crossref]

Weaver, C.

C. Weaver and P. Benjamin, Nature 182, 1149 (1958).
[Crossref]

Wood, R. W.

R. W. Wood, Phil. Mag. 45, 511 (1898).

J. Am. Ceram. Soc. (1)

G. Hass, J. Am. Ceram. Soc. 33, 353 (1950).
[Crossref]

Nature (1)

C. Weaver and P. Benjamin, Nature 182, 1149 (1958).
[Crossref]

Phil. Mag. (1)

R. W. Wood, Phil. Mag. 45, 511 (1898).

Proc. Roy. Soc. (London) (1)

J. Dyson, Proc. Roy. Soc. (London) A248, 93 (1958).

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Figures (7)

Fig. 1
Fig. 1

Laminar phase grating.

Fig. 2
Fig. 2

Steps in the preparation of a transmission phase grating.

Fig. 3
Fig. 3

Transmission-phase diffraction grating 400 lines/in. in silica (silica laminae 1/800 in. wide).

Fig. 4
Fig. 4

Chromium lines of reflection phase grating 400 lines/in. (each chromium strip 1/800 in. wide).

Fig. 5
Fig. 5

Monitoring system for chromium thickness.

Fig. 6
Fig. 6

Steps in preparation of back-surface reflection phase grating.

Fig. 7
Fig. 7

(a) Test for uniformity of transmission phase grating. (b) Test for uniformity of reflection phase grating.

Equations (1)

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( μ - 1 ) t = λ / 2 ,