Optical System of Visible and Short-Wave Infrared AOTF-based Spectral Imaging Device

Batshev, V. I.; Боритко, С. В.; Козлов, А. Б.; Sharikova, M. O.; Lomonov, V. A.

doi:10.1109/weconf51603.2021.9470732

Cited by 3 publications

(3 citation statements)

References 7 publications

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“…The use of telecentric confocal optics can eliminate errors caused by inaccurate focus. In addition, the system has the advantage of uniform image field with the same resolution and diffraction efficiency over the scene [33,34]. However, the focal length of the lens in the system must be shot enough to prevent diffraction from limiting resolution.…”

Section: Confocal Schemementioning

confidence: 99%

Review of acousto-optic spectral systems and applications

2022

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Acousto-optic devices represented by acousto-optic tunable filters (AOTFs), have the advantages of wide wavelength range from the ultraviolet to the long-wave infrared and fast wavelength switching speed. Nowadays, acousto-optic spectral systems have become very important scientific instruments in laboratory. There are many factors to be considered when we choose different solutions for acousto-optic spectral systems, but there is no comprehensive analysis and summary of them. This paper explains the working principle of the acousto-optic devices and summarizes the most common optical schemes for acousto-optic spectral systems. We also analyzed their characteristics of application conditions. In addition, specific applications of acousto-optic spectral systems in some common fields are presented.

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Section: Confocal Schemementioning

confidence: 99%

Review of acousto-optic spectral systems and applications

2022

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“…Short wave infrared technology has a series of outstanding advantages such as high recognition, all-weather adaptation, low light night vision, covert active imaging, and simple optical configuration, making it have special application prospects in fields such as aerospace remote sensing, archaeological identification, military reconnaissance, public safety, industrial testing, medical diagnosis, etc. [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Research on Fast Detection Technology of Dark Current in Ge-Si Detector Array

Gao¹,

Tao²,

Li³

et al. 2023

Preprint

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The shortwave infrared Ge-Si photodetector will become the core device of the LiDAR optical receiver. In order to meet the urgent demand for photodetectors in the LiDAR field, we have designed and produced a 32×32 pixel Ge-Si photodetector array proposed and developed to meet the performance requirements of the detector array. A dark current detection system for fast scanning and detecting large-scale Ge-Si detector arrays is proposed and developed to achieve rapid detection of dark current in each pixel of the detector. The system was used to validate the main performance indicators of the detector array we designed, achieving rapid discrimination of array performance and rapid localization of damaged pixels. The scanning test results show that the average dark current of the detector array chip we designed is at the nano ampere level, and the proportion of bad points is less than 1%. The consistency of the array chip is high, which can meet the requirements of light detection at the receiving end of the LiDAR. This work laid the foundation for our subsequent development of a LiDAR prototype system.

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“…2023, 13, 6887 2 of 14 prospects in fields such as aerospace remote sensing, archaeological identification, military reconnaissance, public safety, industrial testing, medical diagnoses, etc. [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Research on Fast Detection Technology of Dark Currents in a Ge–Si Detector Array

Gao

Tao

et al. 2023

Applied Sciences

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A shortwave infrared Ge–Si photodetector will become the core device of the LiDAR optical receiver. In order to meet the urgent demand for photodetectors in the LiDAR field, we designed and produced a 32 × 32-pixel Ge–Si photodetector array, which was proposed and developed to meet the performance requirements of the detector array. A dark current detection system for fast scanning and detecting large-scale Ge–Si detector arrays was proposed and developed to achieve the rapid detection of dark current in each detector pixel, with a detection accuracy of less than 1 nA. The system validated the primary performance indicators of the detector array we designed, achieving rapid discrimination of the array performance and rapid localization of damaged pixels. The scanning test results showed that the average dark current of the designed detector array chip was on the nanoampere level, and the proportion of bad points was less than 1%. The consistency of the array chip was high, which meets the requirements of light detection at the receiving end of LiDAR. This work laid the foundation for our subsequent development of a LiDAR prototype system.

show abstract

Optical System of Visible and Short-Wave Infrared AOTF-based Spectral Imaging Device

Cited by 3 publications

References 7 publications

Review of acousto-optic spectral systems and applications

Review of acousto-optic spectral systems and applications

Research on Fast Detection Technology of Dark Current in Ge-Si Detector Array

Research on Fast Detection Technology of Dark Currents in a Ge–Si Detector Array

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