Abstract

A high-resolution infrared spectroscopic system consisting of a large Littrow-type grating monochromator followed by a prism order-sorting system is described. The system has been designed to provide sufficient radiant energy per spectral pass band so that a spectral resolution of about 0.08 cm−1 can be achieved at wavelengths beyond 7 μ. An order-sorting system permits simultaneous recording of the spectrum being measured and a higher-order calibration spectrum. Wavelengths of the lines in absorption spectra can be measured to within 0.005 cm−1.

© 1962 Optical Society of America

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References

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  1. John Strong, J. Opt. Soc. Am. 39, 320 (1949); see also John Strong, Concepts of Classical Optics (W. H. Freeman and Co., San Francisco, 1958), p. 270.
    [CrossRef] [PubMed]
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    [PubMed]
  5. P. Bratt, W. Engeler, H. Levinstein, A. MacRae, J. Pehek, Infrared Physics 1, 27 (1961).
    [CrossRef]
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    [CrossRef]
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    [CrossRef]
  8. D. H. Rank, E. Shull, H. Bennett, T. A. Wiggins, J. Opt. Soc. Am. 43, 952 (1953).
    [CrossRef]
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    [CrossRef]
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    [CrossRef]
  11. D. H. Rank, J. Opt. Soc. Am. 47, 671 (1957).
    [CrossRef]
  12. G. Herzberg, Infrared and Raman Spectra (D. Van Nostrand, New York, 1945), p. 384.
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    [CrossRef]
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    [CrossRef]
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    [CrossRef]
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    [CrossRef]
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    [CrossRef]
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    [CrossRef]

1961 (5)

1960 (2)

D. H. Rank, G. Skorinko, D. P. Eastman, T. A. Wiggins, J. Mol. Spec. 4, 518 (1960).
[CrossRef]

D. H. Rank, D. P. Eastman, W. B. Birtley, G. Skorinko, T. A. Wiggins, J. Opt. Soc. Am. 50, 821 (1960).
[CrossRef]

1959 (1)

1957 (3)

1955 (2)

1953 (1)

1949 (1)

1947 (1)

1945 (1)

Ameer, G. A.

Benesch, W. M.

Bennett, H.

Birtley, W. B.

Blaine, L. R.

Boyle, W. S.

Bratt, P.

P. Bratt, W. Engeler, H. Levinstein, A. MacRae, J. Pehek, Infrared Physics 1, 27 (1961).
[CrossRef]

Connor, W. S.

Crosswhite, H. M.

Dieke, G. H.

Eastman, D. P.

Engeler, W.

P. Bratt, W. Engeler, H. Levinstein, A. MacRae, J. Pehek, Infrared Physics 1, 27 (1961).
[CrossRef]

Herzberg, G.

G. Herzberg, Infrared and Raman Spectra (D. Van Nostrand, New York, 1945), p. 384.

G. Herzberg, op. cit., p. 390.

Jones, R. C.

Levinstein, H.

P. Bratt, W. Engeler, H. Levinstein, A. MacRae, J. Pehek, Infrared Physics 1, 27 (1961).
[CrossRef]

Lord, R. C.

Low, F. J.

MacRae, A.

P. Bratt, W. Engeler, H. Levinstein, A. MacRae, J. Pehek, Infrared Physics 1, 27 (1961).
[CrossRef]

McCubbin, T. K.

Pehek, J.

P. Bratt, W. Engeler, H. Levinstein, A. MacRae, J. Pehek, Infrared Physics 1, 27 (1961).
[CrossRef]

Penndorf, R.

Plyler, E. K.

Rank, D. H.

Rao, B. S.

Rodgers, K. F.

Shearer, J. N.

Shull, E.

Skorinko, G.

D. H. Rank, G. Skorinko, D. P. Eastman, T. A. Wiggins, J. Mol. Spec. 4, 518 (1960).
[CrossRef]

D. H. Rank, D. P. Eastman, W. B. Birtley, G. Skorinko, T. A. Wiggins, J. Opt. Soc. Am. 50, 821 (1960).
[CrossRef]

Strong, John

Wiggins, T. A.

Infrared Physics (1)

P. Bratt, W. Engeler, H. Levinstein, A. MacRae, J. Pehek, Infrared Physics 1, 27 (1961).
[CrossRef]

J. Mol. Spec. (1)

D. H. Rank, G. Skorinko, D. P. Eastman, T. A. Wiggins, J. Mol. Spec. 4, 518 (1960).
[CrossRef]

J. Opt. Soc. Am. (15)

Other (2)

G. Herzberg, Infrared and Raman Spectra (D. Van Nostrand, New York, 1945), p. 384.

G. Herzberg, op. cit., p. 390.

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Figures (2)

Fig. 1
Fig. 1

The 2.5-m grating spectrometer and the optical system for simultaneous observation of two spectral orders. The optical path of the shortwave order from m8 to m6, through the prism, and from m4 to m3 has not been shown for clarity.

Fig. 2
Fig. 2

The Q branch of the HCNν2 band near 14 μ observed in the third order of a 40-line-per-mm grating singly passed. Path length 30 cm. Pressure less than 1 mm Hg. The maximum absorption is about 50%. Slit width 0.65 mm.

Equations (4)

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S N ( l F ) ( 1 W 0 ) A ,
S N a h d N d D .
σ = l 2 4 F tan θ .
Δ ν = 1 8 λ ( l F ) 2 ( 1 tan θ 0 tan θ ) .

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