Zobrazeno 1 - 10
of 753
pro vyhledávání: '"Friberg, A. T."'
The concepts of geometric phase and wave-particle duality are interlinked to several fundamental phenomena in quantum physics, but their mutual relationship still forms an uncharted open problem. Here we address this question by studying the geometri
Externí odkaz:
http://arxiv.org/abs/2310.20273
We consider cross-spectral purity in random nonstationary electromagnetic beams in terms of the Stokes parameters representing the spectral density and the spectral polarization state. We show that a Stokes parameter being cross-spectrally pure is co
Externí odkaz:
http://arxiv.org/abs/2307.11103
Autor:
Asamoah, Benjamin O., Nečada, Marek, Liu, Wenzhe, Heikkinen, Janne, Mohamed, Sughra, Halder, Atri, Rekola, Heikki, Koivurova, Matias, Väkeväinen, Aaro I., Törmä, Päivi, Turunen, Jari, Setälä, Tero, Friberg, Ari T., Shi, Lei, Hakala, Tommi K.
Radiative properties of lasing plasmonic bound state in continuum are analyzed. The topological charge of the lasing signal is analyzed in the far field as well as in the source plane of the finite sized plasmonic lattice. The physical mechanism enab
Externí odkaz:
http://arxiv.org/abs/2206.05011
Publikováno v:
Phys. Rev. Applied 18 (2022), 044053
We propose a free-space, inverse design of nanostructure's effective mode-matching fields via a backward propagation of tightly focused vector beams to the pupil plane of an aplanatic system of high numerical aperture. First, we study the nanostructu
Externí odkaz:
http://arxiv.org/abs/2204.07379
Publikováno v:
In Optics and Laser Technology January 2025 180
Autor:
Koivurova, Matias, Hakala, Tommi, Turunen, Jari, Friberg, Ari T., Ornigotti, Marco, Caglayan, Humeyra
We examine layered metamaterial structures consisting of alternating films of epsilon-near-zero (ENZ) and dielectric material, and show that for such a stack it is possible to enhance the refractive, reflective or absorptive properties of the ENZ. Th
Externí odkaz:
http://arxiv.org/abs/2007.06297
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We demonstrate experimentally ghost optical coherence tomography using a broadband incoherent supercontinuum light source with shot-to-shot random spectral fluctuations. The technique is based on ghost imaging in the spectral domain where the object
Externí odkaz:
http://arxiv.org/abs/1810.03380
Ghost imaging is an unconventional imaging technique that generates high resolution images by correlating the intensity of two light beams, neither of which independently contains useful information about the shape of the object. Ghost imaging has gr
Externí odkaz:
http://arxiv.org/abs/1805.12424
Akademický článek
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