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Proceedings Paper

Determining Bandpass Of Spectrometric Instruments Which Use Concave Gratings
Author(s): Steven C. Irick
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Paper Abstract

An algorithm for determining the bandpass of spectrometric instruments is presented. This algorithm makes use of the results of tracing rays through a concave holographic grating in order to obtain an irradiance distribution which is convolved with the exit slit of a monochromator or a detector element of a spectrograph. The resulting convolution may be interpreted as a function of irradiance vs. wavelength, which we call the instrumental profile. A finite number of rays alone is not enough to establish bandpass of a particular instrument configuration. Smoothing from the convolution and possibly additional filtering of the irradiance data are necessary in order to get a continuous irradiance function from which a single bandpass quantity is determined. Examples of one particular instrument design are used to compare the results of a computer program using this algorithm to actual instrument bandpass measurements.

Paper Details

Date Published: 5 July 1989
PDF: 11 pages
Proc. SPIE 1055, Raman Scattering, Luminescence and Spectroscopic Instrumentation in Technology, (5 July 1989); doi: 10.1117/12.951601
Show Author Affiliations
Steven C. Irick, Milton Roy Company (United States)


Published in SPIE Proceedings Vol. 1055:
Raman Scattering, Luminescence and Spectroscopic Instrumentation in Technology
Fran Adar; James E. Griffiths; Jeremy M. Lerner, Editor(s)

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