Spectral Imaging Experiments with Various Optical Schemes Based on the Same AOTF

Batshev, V. I.; Мачихин, А. С.; Martynov, Grigoriy N.; Khokhlov, Demid D.; Боритко, С. В.; Пожар, В. Э.; Lomonov, V. A.

doi:10.3390/ma14112984

Cited by 15 publications

(5 citation statements)

References 19 publications

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“…These constraints affect the design of the front optics. Typically, the front optics have two structures: collimation and confocal [ 25 ]. However, in our proposed design, we use telecentric confocal optics, where

is equivalent to the focal length (

) of the front lens1 [ 26 , 27 ].…”

Section: Methods and Analysismentioning

confidence: 99%

Polarization-Multiplexed High-Throughput AOTF-Based Spectral Imaging System

Zhang,

Zhao,

Guo

et al. 2023

Materials

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Spectral imaging detection using acousto-optical tunable filters (AOTFs) faces a significant challenge of low throughput due to the traditional design that only receives a single polarization light. To overcome this issue, we propose a novel polarization multiplexing design and eliminate the need for crossed polarizers in the system. Our design allows for simultaneous collection of ±1 order light from the AOTF device, resulting in a more than two-fold increase in system throughput. Our analysis and experimental results validate the effectiveness of our design in improving system throughput and enhancing the imaging signal-to-noise ratio (SNR) by approximately 8 dB. In addition, AOTF devices used in polarization multiplexing applications require optimized crystal geometry parameter design that does not follow the parallel tangent principle. This paper proposes an optimization strategy for arbitrary AOTF devices which can achieve similar spectral effects. The implications of this work are significant for target detection applications.

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is equivalent to the focal length (

) of the front lens1 [ 26 , 27 ].…”

Section: Methods and Analysismentioning

confidence: 99%

Polarization-Multiplexed High-Throughput AOTF-Based Spectral Imaging System

Zhang,

Zhao,

Guo

et al. 2023

Materials

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“…The testing machine provides the controlled uniaxial compression of a crystalline specimen installed between press plates with a specialized floating hinge. To demonstrate feasibility of the proposed technique we chose an anisotropic material widely utilized in spectral imaging devices and laser instrumentation [8][9][10][11][12], tetragonal form of tellurium dioxide α-TeO2. Layout of the experimental setup is shown in figure 1.…”

Section: Methodsmentioning

confidence: 99%

Mueller-Matrix Stress Mapping in TeO2 Crystals Under Dynamic Loading

Khokhlov,

Bykov,

Marchenkov

et al. 2023

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Components of optoelectronic devices installed in aircrafts and space vehicles experience significant mechanical loads during their operation. Excessive and cyclic loads may lead to the defect growth or the fatigue failure. In this paper, we describe a non-destructive imaging technique for stress mapping in anisotropic crystalline materials during bench test. The technique is based on Mueller-matrix imaging and the material photoelasticity. The results of experimental studies for two observation directions coinciding with different crystallographic axes of TeO2 are presented. Main limitations and further potential development of the technique are discussed.

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“…The light entering the optical system from the object under test is collimated by L0, the mutually parallel light is filtered by the AOTF, and then be focused on the CCD by the focusing lens L1. Non-uniformity of the central wavelength of the filtered light across the field of view can lead to specific image spectral distortions [28].…”

Section: Collimating 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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Spectral Imaging Experiments with Various Optical Schemes Based on the Same AOTF

Cited by 15 publications

References 19 publications

Polarization-Multiplexed High-Throughput AOTF-Based Spectral Imaging System

Polarization-Multiplexed High-Throughput AOTF-Based Spectral Imaging System

Mueller-Matrix Stress Mapping in TeO2 Crystals Under Dynamic Loading

Review of acousto-optic spectral systems and applications

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