Acousto-optic collinear filter with optoelectronic feedback

Манцевич, С. Н.; Balakshy, V. I.; Kuznetsov, Yuri A.

doi:10.1007/s00340-017-6689-8

Cited by 16 publications

(6 citation statements)

References 15 publications

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“…In this paper we consider how the introduction of an optoelectronic feedback loop affects the operation and characteristics of the collinear AO filter and what additional possibilities for controlling the optical radiation spectral composition appear in this case. The results of the similar system study presented earlier in [24]- [27] has shown that changing the feedback parameters it is possible to control the width of the AO filter transmission function and suppress its side lobes.…”

Section: Introductionmentioning

confidence: 63%

“…A distinctive feature of this AO system from the previously examined [24]- [27] is that the beamsplitter is mounted before of the output polarizers. The polarization plane of the input polarizer is oriented orthogonally to Y crystallographic axis.…”

Section: Examined System Descriptionmentioning

confidence: 99%

“…The second beam will pass through the analyzer, with the polarization plane oriented at an angle β = 45°to the Y axis (the case of maximal I 1 component). Thus, its intensity will be modulated by amplitude with the ultrasound frequency, excited in the AO cell [24]- [27], [33], which makes it possible to use it for signal generation at the feedback circuit input, so we will call it the feedback beam.…”

Section: Examined System Descriptionmentioning

confidence: 99%

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Collinear Acousto-Optic Filtration With Electronically Adjustable Transmission Function

Манцевич

Balakshy

2019

IEEE Photonics J.

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An acousto-optic system containing collinear acousto-optic filter fabricated from calcium molybdate crystal and a positive electronic feedback was examined. The feedback signal is formed due to the optical heterodyning effect that appears for the special geometry of polarizer and analyzer polarization planes mutual orientation between which the collinear filter is located. It is shown that the feedback circuit electrical parameters variation enable controlling the spectral characteristics of the acousto-optic collinear filtration, resulting in enhancing the maximal spectral resolution and transmission function side lobes suppression.

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Section: Introductionmentioning

confidence: 63%

Section: Examined System Descriptionmentioning

confidence: 99%

Section: Examined System Descriptionmentioning

confidence: 99%

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Collinear Acousto-Optic Filtration With Electronically Adjustable Transmission Function

Манцевич

Balakshy

2019

IEEE Photonics J.

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“…They are widely used as laser materials, phosphors, and optical functional media [18][19][20] as well as scintillation (cryogenic) detectors for rare-event and dark matter searches [21][22][23]. Scheelite-type molybdates, in particular CaMoO 4 and PbMoO 4 , possess high acousto-optical characteristics and are actively used as optical solid-state deflectors, modulators, adjustable filters, and surface acoustic wave devices [24,25]. In turn, single crystals of double rare-earth sodium tungstates and molybdates are of considerable interest as nonlinear elements for laser Raman shifting and active media for solid-state, tunable, thin-disk and ultrashort (<100 fs) pulsed lasers [20,25].…”

Section: Scheelite Family Compoundsmentioning

confidence: 99%

Peculiar Structural Effects in Pure and Doped Functional Single Crystals of Complex Compositions

Кузьмичева

Kaurova

2020

Molecules

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Results of a detailed structural characterization of nominally pure and doped single crystals of scheelite, eulytin, and perovskite families obtained by melt methods were considered and analyzed. The influence of growth and post-growth annealing conditions on actual compositions of crystals is shown. The reasons for the coloration of the crystals are explained. A change in crystal symmetry due to crystal–chemical and growth reasons is considered. The use of structural analysis and X-ray absorption spectroscopy is substantiated to reveal the role of activator ions in the formation of statistical and local structures, respectively. A relationship between the distribution of activator ions over crystallographic sites and photoluminescent parameters of materials is established, which allows selecting optimal systems for the application. The combined results of studying single-crystal compounds of other classes (huntite, sillenite, whitlockite, garnet, tetragonal bronzes) allow formulating and summarizing structural effects that appeared in the systems and caused by various factors and, in many cases, due to the local environment of cations. A principal difference in the structural behavior of solid solutions and doped compounds is shown. The methodology developed for single-crystal samples of complex compositions can be recommended for the systematic structural studies of functional materials of different compositions.

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“…The system considered in this paper belongs to the class of AO devices with an optoelectronic feedback [5,6]. Such systems are known for the complexity of their behavior and the variety of operating regimes [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Wide-angle acousto-optic diffraction spectral selectivity enhancement by optoelectronic feedback introduction

Mantsevich,

Slinkov

2022

Proceedings of the 10th Convention of the European Acoustics Association Forum Acusticum 2023

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One of the acousto-optic (AO) tunable filters applications is the filtration of divergent optical beams, for exampleimage spectral filtration. In this case, the so-called wideangle or tangential AO interaction geometry is used. Unfortunately, such AO devices usually do not have a high spectral resolution, and an increase in the light beam divergence leads to an even greater widening of the AO device transmission function, since the AO phase matching condition for the lateral components of the optical beam spatial spectrum differs from those for the axial components. In this paper we examine the possibility of improving the spectral resolution of a wide-angle AO tunable filter by introducing optoelectronic feedback connecting the optical output of the AO cell and its piezoelectric transducer. The study is carried on the example of collinear AO interaction (a special case of highfrequency wide-angle diffraction). It is shown that the feedback introduction makes it possible to improve the spectral contrast and narrow the AO filter passband up to 20 times, while AO cell transfer function, which determines the value of AO filter angular aperture, remains unchanged.

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Acousto-optic collinear filter with optoelectronic feedback

Cited by 16 publications

References 15 publications

Collinear Acousto-Optic Filtration With Electronically Adjustable Transmission Function

Collinear Acousto-Optic Filtration With Electronically Adjustable Transmission Function

Peculiar Structural Effects in Pure and Doped Functional Single Crystals of Complex Compositions

Wide-angle acousto-optic diffraction spectral selectivity enhancement by optoelectronic feedback introduction

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