Zobrazeno 1 - 10
of 181
pro vyhledávání: '"Jürgen Jahns"'
Autor:
Stephanie Supp, Jürgen Jahns
Publikováno v:
Journal of the European Optical Society-Rapid Publications, Vol 14, Iss 1, Pp 1-9 (2018)
Abstract Background A diffractive spiral axicon can be used for the generation of a vortex beam with orbital angular momentum. The coaxial superposition of multiple vortices can generate a complex field with off-axis optical vortices. These fields ar
Externí odkaz:
https://doaj.org/article/24df51670d4c4b65bc6371a305bd8441
Autor:
Ulrich Lohmann, Jürgen Jahns
Publikováno v:
2021 International Conference on Electrical, Computer, Communications and Mechatronics Engineering (ICECCME).
Rapid growth in computing and communications, novel computing concepts and applications require permanent advances and increasing flexibility in data networks and data centers. Here, we discuss architecture and physical implementation of an adaptive
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eee588b5cf4a76dcd94a2de37711ba8f
https://doi.org/10.1109/iceccme52200.2021.9591012
https://doi.org/10.1109/iceccme52200.2021.9591012
Autor:
Jürgen Jahns, Stefan Helfert
Publikováno v:
OSA Optical Design and Fabrication 2021 (Flat Optics, Freeform, IODC, OFT).
The performance of dielectric dipoles with high refractive index is investigated for the implementation of a polarization-multiplexed metalens. Purpose is the implemention of two different phase profiles for two orthogonal polarization states.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::54d0a68ac848417099e7163afe1c3ef2
https://doi.org/10.1364/flatoptics.2021.jtu1a.12
https://doi.org/10.1364/flatoptics.2021.jtu1a.12
Publikováno v:
Optics Letters. 47:2024
We present an artificial birefringent space-variant polarization converter for the near infrared, λ = 1550 nm. Each hollow waveguide has a rectangular shape with lateral dimensions of 1550 nm in the x-direction and 1034 nm as the largest length in t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8bfd6e5916fe1199636fd58290fc484f
https://doi.org/10.1364/ol.455217
https://doi.org/10.1364/ol.455217
Publikováno v:
Advanced Fabrication Technologies for Micro/Nano Optics and Photonics XIII.
In this contribution, we present the fabrication of space-variant quarter- and half-wave plates, by combining 3D laser direct writing with electroplating. A negative of the space-variant wave plates was fabricated with 3D laser direct writing in a po
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c2631dd744fce449cd354a37c7109a6e
https://doi.org/10.1117/12.2543560
https://doi.org/10.1117/12.2543560
Autor:
Jürgen Jahns, Stephanie Supp
Publikováno v:
Journal of the European Optical Society-Rapid Publications, Vol 14, Iss 1, Pp 1-9 (2018)
Background A diffractive spiral axicon can be used for the generation of a vortex beam with orbital angular momentum. The coaxial superposition of multiple vortices can generate a complex field with off-axis optical vortices. These fields are known a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b301d4bcd013fff73a00b5f16690bd84
http://link.springer.com/article/10.1186/s41476-018-0086-8
http://link.springer.com/article/10.1186/s41476-018-0086-8
Autor:
Jürgen Jahns
Publikováno v:
Fourth International Conference on Applications of Optics and Photonics.
Symmetries in the propagation of a wavefield occur due to constraints, imposed either by the structure of an optical element/system or by the propagation medium. The spatial properties of a wavefield may be influenced by mirror symmetry, lateral inve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d88b73de098f4e0ff4194699a460301
https://doi.org/10.1117/12.2523115
https://doi.org/10.1117/12.2523115
Publikováno v:
Optical and Quantum Electronics. 51
The bidirectional propagation and collision of counter-propagating optical solitons in a two-level resonant medium is analyzed. For sufficiently short duration of the pulses and sufficiently high power levels, self-induced transparency allows the pul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a3b8e5eb38bd9aa82d69987ed245fe47
https://doi.org/10.1007/s11082-019-1785-0
https://doi.org/10.1007/s11082-019-1785-0
Autor:
Ruediger Grunwald, Thomas Seiler, Alexander Treffer, Martin Bock, T. Elsässer, Max Liebmann, Jürgen Jahns
Publikováno v:
Complex Light and Optical Forces XIII.
Recently it was reported that free-space propagating, ultrashort-pulsed polychromatic beams with orbital angular momentum (OAM) show a spectral Gouy rotation (SGR) of red- and blue-shifted areas around singularities. In femtosecond laser experiments
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::62de773d0a8dd1576d4a7b3e926d3591
https://doi.org/10.1117/12.2507934
https://doi.org/10.1117/12.2507934
Autor:
Stefan F. Helfert, Jürgen Jahns
Publikováno v:
Optical and Quantum Electronics. 51
A hollow-waveguide array with sub-wavelength dimensions was suggested earlier as a space-variant polarization converter. For optimum light transmission through the array, periodic structured illumination is generated by using a dielectric grating wit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::596122636b2858a3519cafab9dcd66d3
https://doi.org/10.1007/s11082-019-1787-y
https://doi.org/10.1007/s11082-019-1787-y