Mode Functions for the Perfectly Conducting Echelette Grating

Nitrogen cluster beams are reflected from an Echelette grating to investigate the influence of the surface structure on the reflection characteristics. If the mean cluster diameter is greater than the effective grating constant the same flux distribution is found as for a polished reflector. However, the flux distribution clearly spreads out in the plane of incidence if the cluster diameter becomes almost equal to the effective grating constant.

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Concerning the Echelette Grating

The Astrophysical Journal ◽

10.1086/141895 ◽

1911 ◽

Vol 34 ◽

pp. 317

Author(s):

A. Trowbridge

Keyword(s):

Echelette Grating

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Structure of the spectral image produced by an echelette grating

Journal of Soviet Mathematics ◽

10.1007/bf01097206 ◽

1990 ◽

Vol 50 (5) ◽

pp. 1834-1841

Author(s):

E. A. Begovatov ◽

V. V. Kuindzhi ◽

T. S. Saamova ◽

S. A. Strezhnev

Keyword(s):

Spectral Image ◽

Echelette Grating

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Optical theory of the echelette grating

Mathematical Proceedings of the Cambridge Philosophical Society ◽

10.1017/s0305004100023422 ◽

1947 ◽

Vol 43 (2) ◽

pp. 240-253 ◽

Cited By ~ 5

Author(s):

G. K. T. Conn

Keyword(s):

Optical Properties ◽

Optical System ◽

Wave Length ◽

Practical Importance ◽

Resolving Power ◽

Relative Importance ◽

Available Energy ◽

Length Relationship ◽

Infra Red ◽

Echelette Grating

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.

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