Short-wave infrared imaging spectrometer based on tandem acousto-optical tunable filter

Balandin I.A., Sharikova M.O., Batshev, V.I., Varnavskaya D.V., Kozlov A.B.

For Russian citation (Opticheskii Zhurnal):

Баландин И.А., Шарикова М.О., Батшев В.И., Варнавская Д.В., Козлов А.Б. Видеоспектрометр ближнего инфракрасного диапазона с использованием двойного акустооптического фильтра // Оптический журнал. 2024. Т. 91. № 7. С. 37–44. http://doi.org/10.17586/1023-5086-2024-91-07-37-44

Balandin I.A., Sharikova М.O., Batshev V.I., Varnavskaya D.V., Kozlov A.B. Short-wave infrared imaging spectrometer based on tandem acousto-optical tunable filter [in Russian] // Opticheskii Zhurnal. 2024. V. 91. № 1. P. 37–44. http://doi.org/10.17586/1023-5086-2024-91-07-37-44

For citation (Journal of Optical Technology):

Abstract:

Subject of study. Methods for design optical schemes of acousto-optical hyperspectral devices for applied problems. Goal of the work. Development of hyperspectral device with tandem acousto-optical tunable filter for range of 0.85–1.6 µm. Method. The design of the optical system of the hyperspectral device was performed in ZEMAX using the original software module. The simulation results were confirmed experimentally. Main results. Short-wave infrared hyperspectral device has been developed and manufactured. The device uses an InGaAs sensor and implements tandem acousto-optic filtration to improve the spatial and spectral resolution. Due to the use of an afocal optical system at the entrance, the angular field of view is 8ґ12°. The device allows to obtain spectral images of objects located at a shooting distance of 1 m or more, and provides a spatial resolution of about 200ґ150 resolvable elements within the field of view. The spectral bandwidth is 12 nm (at a wavelength of 1.06 µm). Practical significance. The hyperspectral device was developed for agricultural applications, but this class of devices is widely used in many other tasks: in remote sensing, for biomedical diagnostics, and in non-destructive testing of technical objects.

Keywords:

acousto-optics, spectral imaging, tandem acousto-optical tunable filter, short-wave infrared range

Acknowledgements:

the work was carried out within the framework of the State Assignment of the STC UP RAS (project FFNS-2022-0010). The results were obtained using the equipment of the Center for Collective Use of the STC UP RAS.

OCIS codes: 130.3120, 230.1040, 120.6200, 110.4234

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