Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Radek Čelechovský"'
Publikováno v:
Symmetry, Vol 14, Iss 5, p 990 (2022)
The optical purity of a chiral sample is of particular importance to the analytical chemistry and pharmaceutical industries. In recent years, the vibrational optical activity (VOA) has become established as a sensitive and nondestructive technique fo
Externí odkaz:
https://doaj.org/article/882832a13b8a479a98e29d40e8442b41
Autor:
Jaroslav Šebestík, Marie Berešová, Karthick Thangavel, Josef Kapitán, Pavel Michal, Petr Bouř, Milan Vůjtek, Radek Čelechovský, Michal Dudka
Publikováno v:
The Journal of Physical Chemistry B. 123:2147-2156
Spectroscopy of vibrational optical activity has been established as a powerful tool to study molecular structures and interactions. In most cases, only fundamental molecular transitions are analyzed. In the present study, we analyze a broader range
Publikováno v:
Localized Waves
Autor:
Radek Čelechovský, Zdeněk Bouchal
Publikováno v:
Journal of Modern Optics. 53:473-480
Recently, a transfer of information based on application of mixed vortex fields has been proposed and experimentally verified. A dynamical creation of vortex superpositions carrying an actual information code has been realized by the spatial light mo
Autor:
Radek Čelechovský, Vladimír Chlup, Zdeněk Bouchal, T. Medrik, M. Kalman, T. Kubina, A. Pochylý, V. Kollarova
Publikováno v:
Optics express. 17(2)
In the paper, the geometrical parameters and energetics of the extremely narrow pseudo-nondiffracting beams with the spot size of several micrometers are examined. The main attention is focused on design, realization and testing of the set-up enablin
Autor:
Radek Čelechovský, Zdeněk Bouchal
Publikováno v:
SPIE Proceedings.
In the paper, design of the phase-only mask enabling generation of variable superpositions of vortices is described and analyzed. A variability of the generated mixed vortex field is achieved by intensity modulation of an array of point sources illum
Publikováno v:
Optics Express. 22:12046
In contemporary optics, the spatial light modulator (SLM) is effectively used as a flexible optoelectronic device playing the key role in a number of experiments of science and technology. Its operation is optimal when using almost monochromatic ligh
Autor:
Zdeněk Bouchal, Radek Čelechovský
Publikováno v:
New Journal of Physics. 9:328-328
Recently, composed vortex fields generated by means of a spatial light modulator working in a dynamical regime have been examined as prospective information carriers. In this paper, an advanced optical set-up utilizing vortices for transfer of inform
Publikováno v:
New Journal of Physics. 7:125-125
A controllable excitation of fibre modes is examined theoretically and experimentally. We verify that the modes of a few-mode fibre can be selectively excited by means of a spatial light modulation of a laser beam focused to the fibre. The proposed m
Autor:
Zdenek Bouchal, Radek Čelechovský
Publikováno v:
New Journal of Physics. 6:131-131
An original method for encoding of information into the spatial structure of mixed vortex states of light is proposed. It is based on the creation of pseudo-nondiffracting vortex patterns representing a controllable superposition of optical vortices