Increase of an Output Optical Signal of an Acousto-Optic Monochromator upon Frequency Modulation of a Control Signal

Mazur, M. M.; Mazur, L. I.; Suddenok, Yu. A.; Shorin, V. N.

doi:10.1134/s0030400x18100156

Cited by 11 publications

(5 citation statements)

References 3 publications

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“…Fourth, one of the main AOTF drawbacks critical for some color reproduction applications is its low optical throughput due to its small angular aperture, narrow spectral band, linear polarization selection under anisotropic diffraction and other factors. Depending on the application, this problem may be solved in a few ways: using a light source with higher power, optimizing the optical coupling between the AOTF and other components, frequency modulation of ultrasonic waves [ 21 ], complicating the optical scheme to ensure simultaneous effective AO diffraction of both polarization components of a randomly polarized light, etc.…”

Section: Discussionmentioning

confidence: 99%

Color Reproduction by Multi-Wavelength Bragg Diffraction of White Light

et al. 2023

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Accurate color reproduction is highly important in multiple industrial, biomedical and scientific applications. Versatile and tunable light sources with high color-rendering quality are very much in demand. In this study, we demonstrate the feasibility of multi-wavelength Bragg diffraction of light for this task. Tuning the frequencies and amplitudes of bulk acoustic waves in the birefringent crystal demonstrates high precision in setting the number, wavelengths and intensities of the monochromatic components necessary to reproduce a specific color assigned according to its coordinates in the CIE XYZ 1931 space. We assembled a setup based on multi-bandpass acousto-optic (AO) filtration of white light and verified the reproduced color balance in multiple experiments. The proposed approach delivers almost full coverage of the CIE XYZ 1931 space and facilitates building compact color reproduction systems (CRSs) for various purposes.

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Section: Discussionmentioning

confidence: 99%

Color Reproduction by Multi-Wavelength Bragg Diffraction of White Light

et al. 2023

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“…Конструктивно АОФ может представлять собой одну или две ориентированные определенным образом и расположенные последовательно АО ячейки [19], в которых распространяется ультразвуковая волна и происходит дифракция света. Двойная монохроматизация излучения позволяет уменьшить пространственно-спектральные искажения, вносимые фильтром, за счет специального расположения одной АО ячейки относительно другой, а также повысить спектральное разрешение и спектральный контраст.…”

Section: схемы ао видеоспектрометров для исследования микрообъектовunclassified

Акустооптический Гиперспектральный Модуль Для Гистологического Исследования Микрообъектов

Данилычев¹,

Катунина²,

Данилычева³

et al. 2019

Журнал Технической Физики

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The problem of the development of an adjustable video-spectrometer unit based on an acousto-optic tunable filter has been considered. This unit is embedded into an optical system of microscopes for hyperspectral analysis of microscopic objects. For this purpose, light–energy conjugation of the filter with microscopes is performed. We have calculated the conjugating optical system, which yields an equality of field of view for a wideband and spectral channel. The experimental model of the developed device has been described. Examples of detection for test objects and histological sections along with the calculation results of the spectral parameters for various skin tissues are given. The developed video-spectrometer unit considerably extends the functionality of microscopes and can be widely used to solve various problems of biomedical diagnostics.

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“…Briefly, the 2-D-TD measurement is based on the TAOTF synchronized with a digital video camera (Machikhin et al, 2016). As shown in Machikhin et al (2017), Mazur et al (1996), and Wang and Zhang (2016), the tandem AO filtration system combines reliable spectral imaging with several important features: absence of image distortions and chromatic drift; high spectral contrast; and increased signal-to-noise ratio. The measured intensity in each pixel (x, y) of the TAOTF spectroscopic image is proportional to the intensity of light irradiated by the corresponding element of the specimen's surface at a given wavelength (l).…”

Section: Taotfmentioning

confidence: 99%

Simultaneous measurements of the two-dimensional distribution of infrared laser intensity and temperature in a single-sided laser-heated diamond anvil cell

Bulatov

Zinin

Mantrova

et al. 2018

Comptes Rendus. Géoscience

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In this report, we demonstrate that combining the laser heating system in a diamond anvil cell (LH-DAC) with a tandem acoustic-optical tunable filter (LH-DAC-TAOTF) allows for the simultaneous measurement of (a) the relative infrared (IR, 1070 nm) power distribution on a specimen surface in the DAC; (b) the temperature distribution under laser heating of a specimen under high-pressure in a DAC; it also (c) provides an opportunity to control the shape of the IR laser spot on the surface of the heated specimen.The effect of the p-shaper on the shape and the position of the focus of the IR laser beam on a specimen using a TAOTF is also presented. For a 10Â long-working distance objective, the smallest diameter of the IR laser was found to be around 10 mm, when the focal plane coincides with that of the imaging optical system of LH-DAC. The highest diameter of the IR laser was shown to be 20 mm when the rim of the p-shaper was set at 3 mm. It is demonstrated also that the TAOFT not only permits to measure the two-dimensional (2-D) distribution of the IR laser power, but also allows for the alignment of the laser before each heating event at different pressures.

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Increase of an Output Optical Signal of an Acousto-Optic Monochromator upon Frequency Modulation of a Control Signal

Cited by 11 publications

References 3 publications

Color Reproduction by Multi-Wavelength Bragg Diffraction of White Light

Color Reproduction by Multi-Wavelength Bragg Diffraction of White Light

Акустооптический Гиперспектральный Модуль Для Гистологического Исследования Микрообъектов

Simultaneous measurements of the two-dimensional distribution of infrared laser intensity and temperature in a single-sided laser-heated diamond anvil cell

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