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Numerical simulation of the performance of a spaceborne Offner imaging hyperspectrometer in the wave optics approximation
A.A. Rastorguev 1, S.I. Kharitonov 2,3, N.L. Kazanskiy 2,3

1 Joint Stock Company "Rocket and Space Center "Progress", Samara, Russia;
2 IPSI RAS – Branch of the FSRC "Crystallography and Photonics" RAS,
443001, Samara, Russia, Molodogvardeyskaya 151;
3 Samara National Research University, 443086, Samara, Russia, Moskovskoye Shosse 34

 PDF, 1068 kB

DOI: 10.18287/2412-6179-CO-1034

Pages: 56-64.

Full text of article: Russian language.

Abstract:
We propose a method for calculating the point scattering function (PSF) of an Offner imaging hyperspectrometer with a diffraction grating in the approximation of scalar diffraction theory. The method consistently takes into account limitations and diffraction of a light beam by elements of the hyperspectrometer system in accordance with the physics of image formation. The PSF of the Offner imaging hyperspectrometer is numerically simulated at various beam parameters and wavelengths. The simulation results are verified using analytical relationships, a geometrical optics approach, as well as a comparison with the related works of other researchers.

Keywords:
Offner's scheme, diffraction grating, wave optics, Kirchhoff integral, hyperspectrometer imaging, spectrometer.

Citation:
Rastorguev AA, Kharitonov SI, Kazanskiy NL. Numerical simulation of the performance of a spaceborne Offner imaging hyperspectrometer in the wave optics approximation. Computer Optics 2022; 46(1): 56-64. DOI: 10.18287/2412-6179-CO-1034.

Acknowledgements:
This work was partly funded by the RF Ministry of Science and Higher Education under a government project of the FSRC “Crystallography and Photonics” RAS (development of mathematical tools for the numerical simulation of the performance of the Offner hyperspectrometer within scalar wave theory) and the Russian Science Foundation under project No 20-69-47110 (modeling the performance of the hyperspectrometer in using the scalar wave theory and verification of the calculation results).

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