Abstract

Spectra are given to illustrate the performance of echelette gratings made by the Merton-N.P.L. process, when used in a commercial spectrometer. The necessary instrumental modifications are described, and it is shown that one of these gratings, suitably blazed, can be used to cover the range 2.5–15μ with resolution greatly in excess of prisms of lithium fluoride, calcium fluoride, and sodium chloride, and at less than 5 percent of the combined cost of these prisms.

© 1954 Optical Society of America

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References

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  1. Thomas Merton, Proc. Roy. Soc. (London) A201, 187 (1950).
    [Crossref]
  2. G. D. Dew and L. A. Sayce, Proc. Roy. Soc. (London) A207, 278 (1951).
    [Crossref]
  3. G. D. Dew, J. Sci. Instr. 29, 277 (1952).
    [Crossref]
  4. R. G. N. Hall and L. A. Sayce, Proc. Roy. Soc. (London) A215, 536 (1952).
    [Crossref]
  5. G. D. Dew, J. Sci. Instr. 30, 229 (1953).
    [Crossref]
  6. J. D. S. Goulden, J. Sci. Instr. 29, 215 (1952).
    [Crossref]
  7. A. C. Menzies, J. Sci. Instr. 30, 441 (1953).
    [Crossref]
  8. H. Czerny and A. F. Turner, Z. Physik 61, 792 (1940).
    [Crossref]
  9. Tetlow, McAuslan, Brimley, and Price, J. Sci. Instr. 28, 161 (1951).
    [Crossref]
  10. A. R. H. Cole, J. Opt. Soc. Am. 43, 807 (1953).
    [Crossref]
  11. Downie, Magoon, Purcell, and Crawford, J. Opt. Soc. Am. 43, 941 (1953).
    [Crossref]
  12. A. Jackson, private communication, 2nd September, 1953.

1953 (4)

1952 (3)

J. D. S. Goulden, J. Sci. Instr. 29, 215 (1952).
[Crossref]

G. D. Dew, J. Sci. Instr. 29, 277 (1952).
[Crossref]

R. G. N. Hall and L. A. Sayce, Proc. Roy. Soc. (London) A215, 536 (1952).
[Crossref]

1951 (2)

G. D. Dew and L. A. Sayce, Proc. Roy. Soc. (London) A207, 278 (1951).
[Crossref]

Tetlow, McAuslan, Brimley, and Price, J. Sci. Instr. 28, 161 (1951).
[Crossref]

1950 (1)

Thomas Merton, Proc. Roy. Soc. (London) A201, 187 (1950).
[Crossref]

1940 (1)

H. Czerny and A. F. Turner, Z. Physik 61, 792 (1940).
[Crossref]

Brimley,

Tetlow, McAuslan, Brimley, and Price, J. Sci. Instr. 28, 161 (1951).
[Crossref]

Cole, A. R. H.

Crawford,

Czerny, H.

H. Czerny and A. F. Turner, Z. Physik 61, 792 (1940).
[Crossref]

Dew, G. D.

G. D. Dew, J. Sci. Instr. 30, 229 (1953).
[Crossref]

G. D. Dew, J. Sci. Instr. 29, 277 (1952).
[Crossref]

G. D. Dew and L. A. Sayce, Proc. Roy. Soc. (London) A207, 278 (1951).
[Crossref]

Downie,

Goulden, J. D. S.

J. D. S. Goulden, J. Sci. Instr. 29, 215 (1952).
[Crossref]

Hall, R. G. N.

R. G. N. Hall and L. A. Sayce, Proc. Roy. Soc. (London) A215, 536 (1952).
[Crossref]

Jackson, A.

A. Jackson, private communication, 2nd September, 1953.

Magoon,

McAuslan,

Tetlow, McAuslan, Brimley, and Price, J. Sci. Instr. 28, 161 (1951).
[Crossref]

Menzies, A. C.

A. C. Menzies, J. Sci. Instr. 30, 441 (1953).
[Crossref]

Merton, Thomas

Thomas Merton, Proc. Roy. Soc. (London) A201, 187 (1950).
[Crossref]

Price,

Tetlow, McAuslan, Brimley, and Price, J. Sci. Instr. 28, 161 (1951).
[Crossref]

Purcell,

Sayce, L. A.

R. G. N. Hall and L. A. Sayce, Proc. Roy. Soc. (London) A215, 536 (1952).
[Crossref]

G. D. Dew and L. A. Sayce, Proc. Roy. Soc. (London) A207, 278 (1951).
[Crossref]

Tetlow,

Tetlow, McAuslan, Brimley, and Price, J. Sci. Instr. 28, 161 (1951).
[Crossref]

Turner, A. F.

H. Czerny and A. F. Turner, Z. Physik 61, 792 (1940).
[Crossref]

J. Opt. Soc. Am. (2)

J. Sci. Instr. (5)

Tetlow, McAuslan, Brimley, and Price, J. Sci. Instr. 28, 161 (1951).
[Crossref]

G. D. Dew, J. Sci. Instr. 29, 277 (1952).
[Crossref]

G. D. Dew, J. Sci. Instr. 30, 229 (1953).
[Crossref]

J. D. S. Goulden, J. Sci. Instr. 29, 215 (1952).
[Crossref]

A. C. Menzies, J. Sci. Instr. 30, 441 (1953).
[Crossref]

Proc. Roy. Soc. (London) (3)

R. G. N. Hall and L. A. Sayce, Proc. Roy. Soc. (London) A215, 536 (1952).
[Crossref]

Thomas Merton, Proc. Roy. Soc. (London) A201, 187 (1950).
[Crossref]

G. D. Dew and L. A. Sayce, Proc. Roy. Soc. (London) A207, 278 (1951).
[Crossref]

Z. Physik (1)

H. Czerny and A. F. Turner, Z. Physik 61, 792 (1940).
[Crossref]

Other (1)

A. Jackson, private communication, 2nd September, 1953.

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Figures (7)

F. 1
F. 1

The optical path of the spectrometer. Windows are not drawn.

F. 2
F. 2

Efficiency of grating blaze as measured with Hg 5461. The upper scale shows the equivalent 1st order infrared wavelengths. The measurement for the 5th order is uncertain because of interference by an infrared line from the mercury lamp.

F. 3
F. 3

Water vapor absorption near 2.6μ, 3rd order 2400 lines/ in. Slits 0.110 mm, gain 0.1 µv full throw, response 2, recording time 13 minutes.

F. 4
F. 4

Methane band near 3.3μ, 2nd order 2400 lines/in. Slit 0.110 mm, gain 0.16 µv full throw, response 2, recording time 14 minutes.

F. 5
F. 5

Water vapor absorption near 6μ, 1st order 2400 lines/in. Slits 0.190 mm, gain 0.13 µv full throw, response 2, recording time 14 minutes.

F. 6
F. 6

Ammonia absorption 9–11μ, 1st order 2400 lines/in. Slits (a) 0.400 mm, (b) 0.500 mm, gain 0.13 µv full throw, response 2, recording time 25 minutes.

F. 7
F. 7

Carbon dioxide band near 15μ, 1st order 2400 lines/ in. Slits 1.10 mm, gain 0.08 µv full throw, response 3, recording time 8 minutes.