Results 11 to 20 of about 148,524 (149)

Multimode nematicon waveguides [PDF]

open access: yesOptics Letters, 2011
We report on the first experimental observation of higher-order modes guided by soliton-induced waveguides in unbiased nematic liquid crystals. We find that the nematicon waveguides operate in a bounded power region specific to each guided mode. Below this region the guided beams diffract, above it the mode mixing and coupling give rise to an unstable ...
Izdebskaya, Yana   +3 more
openaire   +5 more sources

Freeform Phononic Waveguides [PDF]

open access: yesCrystals, 2017
We employ a recently introduced class of artificial structurally-disordered phononic structures that exhibit large and robust elastic frequency band gaps for efficient phonon guiding. Phononic crystals are periodic structures that prohibit the propagation of elastic waves through destructive interference and exhibit large band gaps and ballistic ...
Georgios Gkantzounis, Marian Florescu
openaire   +6 more sources

Scattering in twisted waveguides

open access: yesJournal of Functional Analysis, 2014
28 pages; typos corrected; to appear in Journal of Functional ...
Georgi Raikov   +3 more
openaire   +6 more sources

Terahertz Waveguide Prism

open access: yesAdvanced Photonics 2013, 2013
We present an easily fabricated waveguide prism for the terahertz (THz) frequency range. The prism is made of polypropylene and uses waveguide dispersion to spatially separate frequencies over the range of 0.1 to 0.7 THz. The diffraction properties of the prism were determined using electromagnetic field simulations and the waveguide parameters were ...
Maik Scheller   +4 more
openaire   +4 more sources

Holographic waveguides in photopolymers

open access: yesOptics Express, 2019
The possibilities that offer the holographic optical elements for photovoltaic and "see through display" applications open new windows for holographic recording materials. In this sense, some specific characteristics are required for each particular application. Waveguides are one of the key elements for these applications. Photopolymers are one of the
R. Fernández   +7 more
openaire   +3 more sources

Optofluidics: waveguides and devices

open access: yesSPIE Proceedings, 2012
In this work we review recent results of our work on optofluidics. We show that single mode optofluidic waveguides with low loss can be realized using antiresonant reflecting optical confinement (ARROW). These waveguides can be fabricated using full standard silicon technology or hybrid silicon-polymer processes.
Testa G   +4 more
openaire   +5 more sources

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