Hostname: page-component-586b7cd67f-g8jcs Total loading time: 0 Render date: 2024-11-29T19:53:10.106Z Has data issue: false hasContentIssue false

Optical theory of the echelette grating

Published online by Cambridge University Press:  24 October 2008

G. K. T. Conn
Affiliation:
The UniversitySheffield

Extract

The optical properties of reflecting echelette gratings, used in the infra-red region of the spectrum, are discussed theoretically. Expressions are derived for various important characteristics including the wave-length relationship, the dispersion and the resolving power of spectrometers using such gratings. The intensity distribution is discussed and illustrated by reference to a particular spectrometer fitted with a grating of 1200 lines to the inch. The relative importance of other factors such as the variation of available energy with wave-length, the dispersion of the preliminary optical system, etc., is considered and tabulated. Particular consideration is given to the properties of such gratings when used in much higher orders of interference than are common at present. With large aperture spectrometers, this possibility of using comparatively coarse gratings with a high order of interference is of great practical importance.

Type
Research Article
Copyright
Copyright © Cambridge Philosophical Society 1947

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

(1)Forsythe, W. E.Measurement of Radiant Energy (McGraw-Hill, 1937), pp. 146–7.Google Scholar
Meyer, C. F.Diffraction of Light, X-rays and Material Particles (University of Chicago Press, 1934), p. 144.Google Scholar
Wood, R. W.Physical Optics (Macmillan, 1934), p. 265.Google Scholar
Wood, R. W.Phil. Mag. 20 (1910), 770.CrossRefGoogle Scholar
Trowbridge, A. and Wood, R. W.Phil. Mag. 20 (1910), 886.CrossRefGoogle Scholar
(2)Barnes, R. B.Phys. Rev. 36 (1930), 296.CrossRefGoogle Scholar
Hardy, J. D.Phys. Rev. 38 (1931), 2162.CrossRefGoogle Scholar
(3)Randall, H. M. and Firestone, F. A.Rev. Sci. Instrum. 9 (1938), 404.CrossRefGoogle Scholar
(4)Schaefer, C. and Matossi, F.Das Ultrarote Spektrum (Springer, 1930), p. 47.CrossRefGoogle Scholar
(5)Forsythe, W. E.Loc. cit. pp. 175–7.Google Scholar
Kayser, H.Hand. d. Spec. 1 (S. Hirzel, 1900), 320.Google Scholar
(6)Conn, G. K. T., Lee, E. and Sutherland, G. B. B. M.Proc. Roy. Soc. A, 176 (1940), 484.Google Scholar
Conn, G. K. T. and Sutherland, G. B. B. M.Proc. Roy. Soc. A, 172 (1939), 172.Google Scholar