Zobrazeno 1 - 10
of 61
pro vyhledávání: '"Urszula A. Laudyn"'
Autor:
Jacek Piłka, Michał Kwaśny, Adam Filipkowski, Ryszard Buczyński, Mirosław A. Karpierz, Urszula A. Laudyn
Publikováno v:
Materials, Vol 15, Iss 21, p 7794 (2022)
We study an optical device designed for converting the polarized Gaussian beam into an optical vortex of tunable polarization. The proposed device comprised a set of three specially prepared nematic liquid crystal cells and a nano-spherical phase pla
Externí odkaz:
https://doaj.org/article/b518fe55d56c44f3a82866d244861263
Publikováno v:
Materials, Vol 15, Iss 16, p 5604 (2022)
Our study investigated the partially degenerate intermodal four-wave mixing (IM-FWM) process in nonlinear multimode optical fibers with strain-induced birefringence. The difference in the refractive index along the two orthogonal directions was due t
Externí odkaz:
https://doaj.org/article/71b5bbd50cdf4d10b8cd75547a0035b7
Publikováno v:
Materials, Vol 15, Iss 13, p 4550 (2022)
We demonstrate a partially degenerated intermodal four-wave mixing (FWM) process realized in a few-mode nonlinear optical fiber, leading to the effective generation of visible red and blue light from 532 nm sub-nanosecond pulses. We present a self-se
Externí odkaz:
https://doaj.org/article/aba8a936d2a8425684bf447a2046423c
Autor:
Michal Kwasny, Urszula A. Laudyn
Publikováno v:
Crystals, Vol 12, Iss 3, p 325 (2022)
This work investigates nematic liquid crystal (NLC) optical guiding structures designed in typical sandwich-like NLC cells. With the support of an electrically controlled spatial topology of director orientation, we manage a linear and nonlinear ligh
Externí odkaz:
https://doaj.org/article/056a8f536d0b4ad7bfee63d7eafbd83a
Autor:
Urszula A. Laudyn, Armando Piccardi, Michal Kwasny, Bartlomiej Klus, Miroslaw A. Karpierz, Gaetano Assanto
Publikováno v:
Materials, Vol 11, Iss 10, p 1837 (2018)
Employing several nematic liquid crystal mixtures, we investigate how the thermo-optic response of nonlinear birefringent soft-matter affects the propagation of light beams and the features of self-induced waveguides. We address the formation of opti
Externí odkaz:
https://doaj.org/article/69987ff385d74c9da991b272cf906da3
Publikováno v:
Applied Sciences, Vol 14, Iss 11, p 4682 (2024)
This paper develops an optical power limiter (OPL) utilizing dye-doped nematic liquid crystals (NLCs) in a twisted nematic configuration designed to protect charged-coupled devices from intense light damage. The device harnesses the intrinsic optical
Externí odkaz:
https://doaj.org/article/83b3945c50d84aa7b3d64afb8e1276fe
Publikováno v:
Materials, Vol 17, Iss 5, p 999 (2024)
Optical spatial solitons are self-guided wave packets that maintain their transverse profile due to the self-focusing effect of light. In nematic liquid crystals (NLC), such light beams, called nematicons, can be induced by two principal mechanisms:
Externí odkaz:
https://doaj.org/article/ff1edef0ac9f457d9a6c7b953bf8da93
Gaussian to Vector Vortex Beams with Tunable Polarization Converter Based on Nematic Liquid Crystals
Autor:
Urszula Anna Laudyn, Jacek Pilka, Michal Kwasny, Adam Filipkowski, Ryszard Buczynski, Miroslaw Karpierz
Publikováno v:
SSRN Electronic Journal.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7552a9c49086706cf928478cc91b8571
https://doi.org/10.2139/ssrn.4115765
https://doi.org/10.2139/ssrn.4115765
Publikováno v:
Optics letters. 45(8)
We report on vortex-solitons generated in dye-doped nematic liquid crystals by a purely optothermal nonlocal nonlinearity. This response not only supports stable doughnut-shaped ordinary-wave beams with orbital angular momentum, but also provides sel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a1ad45e7d08c42d9f9107995822fdd07
https://pubmed.ncbi.nlm.nih.gov/32287256
https://pubmed.ncbi.nlm.nih.gov/32287256
Autor:
Urszula Anna Laudyn, Michal Kwasny
Publikováno v:
Crystals; Volume 12; Issue 3; Pages: 325
This work investigates nematic liquid crystal (NLC) optical guiding structures designed in typical sandwich-like NLC cells. With the support of an electrically controlled spatial topology of director orientation, we manage a linear and nonlinear ligh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::62120ec2277cb372a0a88e826d47dae8
https://doi.org/10.3390/cryst12030325
https://doi.org/10.3390/cryst12030325