5 July 1989 Determining Bandpass Of Spectrometric Instruments Which Use Concave Gratings
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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.
© (1989) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Steven C. Irick, Steven C. Irick, } "Determining Bandpass Of Spectrometric Instruments Which Use Concave Gratings", Proc. SPIE 1055, Raman Scattering, Luminescence and Spectroscopic Instrumentation in Technology, (5 July 1989); doi: 10.1117/12.951601; https://doi.org/10.1117/12.951601
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