Abstract

The percent of the incident radiant flux which is returned into the several orders has been measured for two aluminized gratings both as a function of wavelength and as a function of position on the grating surface. The effects of blaze angle and the reflectance of aluminum on the efficiency of the grating are discussed.

© 1962 Optical Society of America

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References

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  1. G. Sabine, Phys. Rev. 55, 1064 (1939).
    [Crossref]
  2. G. Hass, W. R. Hunter, and R. Tousey, J. Opt. Soc. Am. 46, 1009 (1956).
    [Crossref]
  3. G. Hass, W. R. Hunter, and R. Tousey, J. Opt. Soc. Am. 47, 1070 (1957).
    [Crossref]
  4. W. C. Walker, J. A. R. Samson, and O. P. Rustgi, J. Opt. Soc. Am. 48, 71 (1958).
    [Crossref]
  5. N. Wainfan, W. C. Walker, and G. L. Weissler, J. Appl. Phys. 24, 1318 (1953).
    [Crossref]
  6. W. C. Walker, O. P. Rustgi, and G. L. Weissler, J. Opt. Soc. Am. 49, 471 (1959).
    [Crossref]
  7. Bausch & Lomb Optical Company, Rochester, New York.
  8. G. Hass and R. Tousey, J. Opt. Soc. Am. 49, 593 (1959).
    [Crossref]
  9. P. H. Berning, G. Hass, and R. P. Madden, J. Opt. Soc. Am. 50, 586 (1960).
    [Crossref]

1960 (1)

1959 (2)

1958 (1)

1957 (1)

1956 (1)

1953 (1)

N. Wainfan, W. C. Walker, and G. L. Weissler, J. Appl. Phys. 24, 1318 (1953).
[Crossref]

1939 (1)

G. Sabine, Phys. Rev. 55, 1064 (1939).
[Crossref]

Berning, P. H.

Hass, G.

Hunter, W. R.

Madden, R. P.

Rustgi, O. P.

Sabine, G.

G. Sabine, Phys. Rev. 55, 1064 (1939).
[Crossref]

Samson, J. A. R.

Tousey, R.

Wainfan, N.

N. Wainfan, W. C. Walker, and G. L. Weissler, J. Appl. Phys. 24, 1318 (1953).
[Crossref]

Walker, W. C.

Weissler, G. L.

W. C. Walker, O. P. Rustgi, and G. L. Weissler, J. Opt. Soc. Am. 49, 471 (1959).
[Crossref]

N. Wainfan, W. C. Walker, and G. L. Weissler, J. Appl. Phys. 24, 1318 (1953).
[Crossref]

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Figures (7)

Fig. 1
Fig. 1

Experimental apparatus.

Fig. 2
Fig. 2

Reflectance of aluminum: The solid curve represents the reflectance, at an angle of incidence of 20°, of a thin aluminum film evaporated onto a glass substrate. The broken curve represents the total efficiency, or reflectance, of an aluminized grating at 25° angle of incidence (1200 lines/mm grating).

Fig. 3
Fig. 3

Typical diffraction pattern obtained with the 600 lines/mm grating.

Fig. 4
Fig. 4

Typical diffraction pattern obtained with the 1200 lines/mm grating. The development of a blaze in the first-order is followed through from 1608 Å to its maximum at 686 Å.

Fig. 5
Fig. 5

The solid curves represent the ratio of the intensities of the first-order to that of the sum of all orders, while the broken curve represents the ratio of the second-order intensity to that of the sum of all orders. Hence, the maxima of the curves represent the wavelength at which that portion of the grating is blazed. The numbers 1, 2, and 3 refer to the three portions of the ruled area studied (1200 lines/mm grating).

Fig. 6
Fig. 6

Efficiency of the inside first-order spectrum measured for three areas of the grating as a function of wavelength. fIR denotes the ratio of the first-order intensity to that of the incident beam (1200 lines/mm).

Fig. 7
Fig. 7

Efficiencies for several orders, including the total efficiency RT. The total efficiency, or reflectance, is obtained by adding up the efficiencies of all the orders fR, including that of the central image R. Area 1 was used (600 lines/mm grating).