Andriy Shevchenko
Overview
Explore the profile of Andriy Shevchenko including associated specialties, affiliations and a list of published articles.
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Articles
18
Citations
15
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Recent Articles
1.
Kolkowski R, Shevchenko A
Nanophotonics
. 2024 Dec;
12(17):3443-3454.
PMID: 39633867
Resonant optical structures have widespread applications in science and technology. However, their quality () factors can be significantly deteriorated, if some of their parts exhibit optical absorption. Here, we show...
2.
Sehrawat S, Shevchenko A
Opt Express
. 2024 Nov;
32(21):37624-37634.
PMID: 39573622
Near-field enhancement of light by dipole excitations in plasmonic nanoparticles plays an important role in many applications of optical nanotechnology, including solar cells, plasmonic sensors, and nonlinear optical devices. Recently,...
3.
Sehrawat S, Shevchenko A
Opt Lett
. 2024 Jun;
49(12):3432-3435.
PMID: 38875638
Metal nanoparticles are extensively used in science and technology to resonantly confine and enhance optical fields. Highest enhancement factors are achieved in nanosized gaps of metal dimers. It is commonly...
4.
Hilden P, Shevchenko A
Opt Express
. 2023 May;
31(7):11102-11115.
PMID: 37155753
A common drawback of high-resolution optical imaging systems is a short depth of field. In this work, we address this problem by considering a 4f-type imaging system with a ring-shaped...
5.
Hilden P, Kaivola M, Shevchenko A
Opt Express
. 2022 Oct;
30(14):24716-24729.
PMID: 36237019
Light sheets are optical beam-like fields with one-dimensional intensity localization. Ideally, the field intensity should be independent of the longitudinal and one of the transverse coordinates, which is difficult to...
6.
Ilina E, Nyman M, Mondal T, Kaivola M, Setala T, Shevchenko A
Opt Express
. 2020 Mar;
28(2):1817-1826.
PMID: 32121886
Some imaging techniques reduce the effect of optical aberrations either by detecting and actively compensating for them or by utilizing interferometry. A microscope based on a Mach-Zehnder interferometer has been...
7.
Maurya S, Nyman M, Kaivola M, Shevchenko A
Opt Express
. 2019 Nov;
27(19):27335-27344.
PMID: 31674596
We consider a highly anisotropic metamaterial structure, composed of parallel metal nanostripes, and show that a thin layer of the material can be used as a tunable partial polarizer. The...
8.
Nyman M, Maurya S, Kaivola M, Shevchenko A
Opt Lett
. 2019 Jun;
44(12):3102-3105.
PMID: 31199391
Wave retarders, including quarter- and half-wave plates, are used in many optical systems for polarization conversion. They are usually realized with anisotropic crystalline materials. However, much thinner and possibly also...
9.
Kivijarvi V, Nyman M, Shevchenko A, Kaivola M
Opt Express
. 2018 May;
26(7):9134-9147.
PMID: 29715869
Planar optical waveguides made of designable spatially dispersive nanomaterials can offer new capabilities for nanophotonic components. As an example, a thin slab waveguide can be designed to compensate for optical...
10.
Shevchenko A, Nyman M, Kivijarvi V, Kaivola M
Opt Express
. 2017 Apr;
25(8):8550-8562.
PMID: 28437933
Spatial dispersion is an intriguing property of essentially all nanostructured optical media. In particular, it makes optical waves with equal frequencies and polarizations have different wavelengths, if they propagate in...