Author
V. S. Terentyev
Bio: V. S. Terentyev is an academic researcher from Russian Academy of Sciences. The author has contributed to research in topics: Interferometry & Fabry–Pérot interferometer. The author has an hindex of 1, co-authored 3 publications receiving 4 citations.
Papers
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TL;DR: In this paper, the parameters of diffractive optical elements are calculated and optimized in the approximation of the Fresnel-Kirchhoff diffraction theory in order to transform one laser beam with small divergence to a matrix of converging beams with a diffraction size of focused spots in the plane of object illumination and their application for problems of DNA sequencing and microscopy are considered.
Abstract: Various issues of creation of diffractive optical elements transforming one laser beam with small divergence to a matrix of converging beams with a diffraction size of focused spots in the plane of object illumination and their application for problems of DNA sequencing and microscopy are considered. The parameters of diffractive elements are calculated and optimized in the approximation of the Fresnel–Kirchhoff diffraction theory. Diffractive elements are fabricated by the method of direct laser writing on a photoresist by using a circular laser writing system. Experimental characteristics of a diffractive element creating a matrix consisting of 33 × 33 beams, which are focused in one plane at a distance of 210 mm, are presented. The degree of nonuniformity of beam intensities determined by the ratio of beam intensities in the central region to intensities of peripheral beams is 1/2.5, which is potentially sufficient to be used in DNA sequencing problems. The maximum distortions of spot positions in the entire focusing field is <0.15%.
3 citations
TL;DR: In this article, the exact solution to the main equation for the interferometer and expressions for its transfer functions, i.e., generalized reflection and transmission factors, are obtained in a plane-wave approximation.
Abstract: A multibeam interferometer with oscillating mirrors is theoretically investigated. The exact solution to the main equation for the interferometer and expressions for its transfer functions, i.e., generalized reflection and transmission factors, are obtained in a plane-wave approximation.
1 citations
TL;DR: In this paper, a multibeam interferometer with oscillating mirrors is theoretically investigated and transfer functions are presented and analyzed for two extreme cases, namely, for an interferer with stationary mirrors and an inter-ferometer operating in the mode of "superslow" mirror oscillations.
Abstract: A multibeam interferometer with oscillating mirrors is theoretically investigated. Transfer functions are presented and analyzed for two extreme cases, namely, for an interferometer with stationary mirrors and an interferometer operating in the mode of “superslow” mirror oscillations.
Cited by
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TL;DR: In this paper, the possibility of using computer-generated Fresnel holograms to determine phase aberrations of a wavefront is studied, and the results of computer simulation of the propagation of an elementary signal based on the Fresnel integral transform are presented.
Abstract: The possibility of using computer-generated Fresnel holograms to determine phase aberrations of a wavefront is studied. The results of computer simulation of the propagation of an elementary signal based on the Fresnel integral transform are presented. The principle of operation of a hologram for a wavefront sensor is discussed.
12 citations
TL;DR: In this paper, an implementation of a laser scanning confocal microscope is described, where the specimen is scanned by an array of illuminating beams, which significantly increases the velocity of object image construction.
Abstract: Implementation of a laser scanning confocal microscope is described, where the specimen is scanned by an array of illuminating beams, which significantly increases the velocity of object image construction. The array formation is provided by using a diffractive optical element. Scanning by the array of laser beams over the specimen is performed by galvanometric scanners with moving refractive plane-parallel plates. Owing to application of such a scanning device, the beams in the illuminating channel and the signal beams in the receiving channel pass through one motionless array of confocal diaphragms; as a result, the scanning beams in the specimen plane and the signal beams in the plane of the photodetector matrix can be used without an additional synchronized pair of scanners. The proposed confocal microscope can be applied in problems that require a fast response.
1 citations
TL;DR: In this paper, a multibeam interferometer with oscillating mirrors is theoretically investigated and transfer functions are presented and analyzed for two extreme cases, namely, for an interferer with stationary mirrors and an inter-ferometer operating in the mode of "superslow" mirror oscillations.
Abstract: A multibeam interferometer with oscillating mirrors is theoretically investigated. Transfer functions are presented and analyzed for two extreme cases, namely, for an interferometer with stationary mirrors and an interferometer operating in the mode of “superslow” mirror oscillations.
TL;DR: In this article, the autocollimation optical scheme of a fluorimeter is described, which allows detecting different reactions from multiple wells of a microplate at the same time, and the image focusing is implemented a spherical mirror that excludes the presence of background illumination and chromatic aberration.
Abstract: This paper describes the autocollimation optical scheme of a fluorimeter that allows detecting different reactions from multiple wells of a microplate at the same time. The image focusing is implemented a spherical mirror that excludes the presence of background illumination and chromatic aberration. The operation of the fluorimeter is demonstrated by measuring a signal from the microplate with 96 and 384 individual wells.