Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Lyubomir Stoyanov"'
Autor:
Lyubomir Stoyanov, Maya Zhekova, Aleksander Stefanov, Ivan Stefanov, Gerhard G. Paulus, Alexander Dreischuh
Publikováno v:
Scientific Reports, Vol 10, Iss 1, Pp 1-13 (2020)
Abstract We demonstrate an alternative approach for generating zeroth- and first-order long range non-diffracting Gauss–Bessel beams (GBBs). Starting from a Gaussian beam, the key point is the creation of a bright ring-shaped beam with a large radi
Externí odkaz:
https://doaj.org/article/38dbc2c62419435abd271b8ca746c377
Publikováno v:
Optics Express. 31:13683
It is well-known that the wave of a freely propagating Gaussian beam experiences an additional π phase shift compared to a plane wave. This phase shift, known as the Gouy phase, has significant consequences in, e.g., nonlinear optics, since the nonl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0928f7d28f771935f27965ce38dfc2f9
https://doi.org/10.1364/oe.480761
https://doi.org/10.1364/oe.480761
Publikováno v:
Optical and quantum electronics 54(1), 34 (2022). doi:10.1007/s11082-021-03399-5
Optical and quantum electronics 54(1), 34 (2022). doi:10.1007/s11082-021-03399-5
Published by Springer Science + Business Media B.V, Dordrecht [u.a.]
Published by Springer Science + Business Media B.V, Dordrecht [u.a.]
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::af7b62588fcd45e09fe6e905fdab85ce
Autor:
Alexander Dreischuh, I. L. Stefanov, Georgi Maleshkov, Maya Zhekova, Lyubomir Stoyanov, Gerhard G. Paulus
Publikováno v:
Optics Communications. 449:110-116
In this work, we present numerical simulations and experimental evidence for the creation of controllable multi-spot focal arrays composed of bright beams with flat phase profiles. The input phase structures sent to spatial light modulators were squa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::39d184caa5bb6fc3376b568a61c3fab1
https://doi.org/10.1016/j.optcom.2019.05.051
https://doi.org/10.1016/j.optcom.2019.05.051
Autor:
Giuseppe Leo, F Fouad Karouta, Rocio Camacho-Morales, Chennupati Jagadish, Lyubomir Stoyanov, Andrei Komar, Davide Rocco, Alexander Dreischuh, Andrey E. Miroshnichenko, Valerio F. Gili, Zhonghua Ma, Mykhaylo Lysevych, Hark Hoe Tan, Nikolay Dimitrov, Costantino De Angelis, Lei Xu, Dragomir N. Neshev, Mohsen Rahmani
Publikováno v:
Advanced Photonics
Infrared imaging is a crucial technique in a multitude of applications, including night vision, autonomous vehicles navigation, optical tomography, and food quality control. Conventional infrared imaging technologies, however, require the use of mate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c45082415492c8a01f17c4ce58babf16
Autor:
Alexander Dreischuh, Ljiljana Janicijevic, I. L. Stefanov, Suzana Topuzoski, Lyubomir Stoyanov
Publikováno v:
Optics Communications. 428:206-215
By theoretical and experimental methods it is demonstrated how a beam whose amplitude profile is X-modulated in azimuthal direction, with central dark non-vortex core, can be transformed into an array of five-vortex spot patterns. This beam undergoes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::58e163c6bfe4ef7016b189d1ec511925
https://doi.org/10.1016/j.optcom.2018.07.059
https://doi.org/10.1016/j.optcom.2018.07.059
Diffraction of a Gaussian beam by a four-sector binary grating with a shift between adjacent sectors
Publikováno v:
Optics Communications. 389:203-211
In this article as a diffractive optical element we consider a composed four-sector binary grating under Gaussian laser beam illumination. The angular sectors are bounded by the directions y = x and y = − x , and consist of parts of a binary rectil
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::194e33b45905a575698fea2664e8e99e
https://doi.org/10.1016/j.optcom.2016.12.041
https://doi.org/10.1016/j.optcom.2016.12.041
Publikováno v:
Optical and Quantum Electronics. 51
The study of Fraunhofer diffraction of a Gaussian laser beam by a computer-generated, binary four-sector grating (FSG) is presented. In the four equal angular sectors of the FSG, parts of a binary rectilinear grating are embedded in such a way that,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3a18e5a63c460931ae1aa74c61537f8c
https://doi.org/10.1007/s11082-019-1783-2
https://doi.org/10.1007/s11082-019-1783-2
Publikováno v:
20th International Conference and School on Quantum Electronics: Laser Physics and Applications.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4bb571b8fe3d7ce560eeaaa918f1b3e4
https://doi.org/10.1117/12.2516531
https://doi.org/10.1117/12.2516531
Autor:
Maya Zhekova, Lyubomir Stoyanov, Gerhard G. Paulus, Alexander Dreischuh, I. L. Stefanov, Georgi Maleshkov
Publikováno v:
Scientific reports 9(1), 2128 (2019). doi:10.1038/s41598-019-38608-5
Scientific Reports
Scientific Reports, Vol 9, Iss 1, Pp 1-9 (2019)
Scientific Reports
Scientific Reports, Vol 9, Iss 1, Pp 1-9 (2019)
Scientific reports 9(1), 2128 (2019). doi:10.1038/s41598-019-38608-5
Published by Macmillan Publishers Limited, part of Springer Nature, [London]
Published by Macmillan Publishers Limited, part of Springer Nature, [London]
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::40763365ea1f6dfedfdbccb3f9beebaf