Acoustooptical method of spectral-polarization image analysis

Anchutkin, V. S.; Bel'skiĭ, A. B.; Voloshinov, V. B.; Yushkov, Konstantin B.

doi:10.1364/jot.76.000473

Cited by 18 publications

(3 citation statements)

References 17 publications

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“…The test results demonstrate that the optimization strategy effectively corrects the spectral inconsistency of ±1 order light from the AOTF device at the same tuning frequency. This work is not only applicable to the proposed polarization multiplexing system, but also beneficial to AOTF polarization spectroscopy detection systems [ 38 ] and other AOTF detection systems that collect ±1 order light simultaneously.…”

Section: Discussionmentioning

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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Section: Discussionmentioning

confidence: 99%

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

Zhang,

Zhao,

Guo

et al. 2023

Materials

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“…When compared with traditional optical splitters, such as prism, grating and interferometer, it has advantages in terms of a large-angle aperture, high spectral resolution, arbitrary wavelength configuration, fast tuning speed and it does not require moving elements [ 2 , 3 ]. Therefore, it is widely used in many applications, such as spectral imaging [ 4 , 5 ], polarization analysis [ 6 , 7 ], stereoscopic imaging [ 8 ] and notch filtering [ 9 ], etc. In addition, in the case of monochromatic input light, AOTFs also have the abilities of spatial filtering and edge enhancement [ 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

Calibration of Acousto-Optic Interaction Geometry Based on the Analysis of AOTF Angular Performance

Zhang,

Zhao,

Guo

et al. 2023

Materials

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Acousto-optic interaction geometry determines the spectral and spatial response of an acousto-optic tunable filter (AOTF). The precise calibration of the acousto-optic interaction geometry of the device is a necessary process before designing and optimizing optical systems. In this paper, we develop a novel calibration method based on the polar angular performance of an AOTF. A commercial AOTF device with unknown geometry parameters was experimentally calibrated. The experimental results show high precision, in some cases falling within 0.01°. In addition, we analyzed the parameter sensitivity and Monte Carlo tolerance of the calibration method. The results of the parameter sensitivity analysis show that the principal refractive index has a large influence on the calibration results, while other factors have little influence. The results of the Monte Carlo tolerance analysis show that the probability of the results falling 0.1° using this method is greater than 99.7%. This work provides an accurate and easy-to-perform method for AOTF crystal calibration and can contribute to the characteristic analysis of AOTFs and the optical design of spectral imaging systems.

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“…Spectral image processing by means of AOTFs can also be used in various image processing techniques, for instance, optical coherence microscopy 13 and imaging spectropolarimetry. [14][15][16][17] In the case of monochromatic coherent input light, AOTFs perform spatial filtering of optical beams and can be used for such image processing operations as optical phase detection, edge enhancement, and low-pass and high-pass spatial filtering. [18][19][20][21][22][23][24][25] Optical phase detection by means of AOTFs is based on the angular selectivity of acousto-optic Bragg diffraction.…”

Section: Introductionmentioning

confidence: 99%

Contrast enhancement in microscopy of human thyroid tumors by means of acousto-optic adaptive spatial filtering

et al. 2016

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We report a method for edge enhancement in the images of transparent samples using analog image processing in coherent light. The experimental technique is based on adaptive spatial filtering with an acoustooptic tunable filter in a telecentric optical system. We demonstrate processing of microscopic images of unstained and stained histological sections of human thyroid tumor with improved contrast.

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Acoustooptical method of spectral-polarization image analysis

Cited by 18 publications

References 17 publications

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

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

Calibration of Acousto-Optic Interaction Geometry Based on the Analysis of AOTF Angular Performance

Contrast enhancement in microscopy of human thyroid tumors by means of acousto-optic adaptive spatial filtering

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