Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Henri Partanen"'
Autor:
Aleksi Leinonen, Antti Hannonen, Henri Partanen, Janne Heikkinen, Tero Setälä, Ari T. Friberg, Tommi K. Hakala
Publikováno v:
Communications Physics, Vol 6, Iss 1, Pp 1-8 (2023)
Abstract The geometric phase for classical electromagnetic light beams, in its original formulation as introduced by Pancharatnam, concerns fields experiencing cyclic, discrete in-phase polarization-state changes. A similar phase was later recognized
Externí odkaz:
https://doaj.org/article/37eb0e63b6ae42de9b4792bb4fed8fbd
Autor:
Benjamin O Asamoah, Henri Partanen, Sughra Mohamed, Janne Heikkinen, Atri Halder, Matias Koivurova, Marek Nečada, Tero Setälä, Jari Turunen, Ari T Friberg, Tommi K Hakala
Publikováno v:
New Journal of Physics, Vol 23, Iss 6, p 063037 (2021)
We study beaming properties of laser light produced by a plasmonic lattice overlaid with organic fluorescent molecules. The crossover from spontaneous emission regime to stimulated emission regime is observed in response to increasing pump fluence. T
Externí odkaz:
https://doaj.org/article/3dc847a30e4a4873a2f12229e475235b
Publikováno v:
ACS Photonics. 7:1030-1035
Highly nonparaxial electromagnetic fields are increasingly met in modern nanophotonics. Their characterization is vital, but the traditional beam-field methods are not applicable. In this work we d...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b328151a41fd858d8bf038f4cb3c5898
https://doi.org/10.1021/acsphotonics.9b01745
https://doi.org/10.1021/acsphotonics.9b01745
Publikováno v:
Optics express. 30(4)
We address the specular properties of Bessel-correlated fields, generated by illuminating a tilted rotating plane-parallel glass plate with a coherent Gaussian beam and passing the output beam though a mirror-based wavefront folding interferometer. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::5a3ed7693a2241550168fa83ae5c5c11
https://pubmed.ncbi.nlm.nih.gov/35209527
https://pubmed.ncbi.nlm.nih.gov/35209527
Autor:
Sughra Mohamed, Tero Setälä, Henri Partanen, Tommi K. Hakala, Ari T. Friberg, Benjamin O. Asamoah, Jari Turunen, Matias Koivurova, Janne Heikkinen, Marek Nečada, Atri Halder
Funding Information: The work was funded by the Academy of Finland (Projects 322002, 308393, 310511). The work is part of the Academy of Finland Flagship Programme, Photonics Research and Innovation (PREIN), decisions 320166 and 320165. Publisher Cop
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1813ee21c05eda595660a7db65d433f5
https://aaltodoc.aalto.fi/handle/123456789/108845
https://aaltodoc.aalto.fi/handle/123456789/108845
Publikováno v:
Nanotechnology. 31(14)
The beaming effect in single apertures surrounded by periodic corrugations and the manipulation of beaming directions from such structures has gained considerable attention since discovered. Different materials and structural profiles have been studi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0cf9073c0793a4685da1fbd70bddd4dd
https://pubmed.ncbi.nlm.nih.gov/31887725
https://pubmed.ncbi.nlm.nih.gov/31887725
Publikováno v:
Physical Review A. 99
Young's two-beam interference and the Pancharatnam-Berry geometric phase constitute two landmark results in optical physics. Employing the spectral interference law of electromagnetic waves, we establish a general expression for the Pancharatnam-Berr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b0720962baa623fdadf92a0b76605876
https://doi.org/10.1103/physreva.99.053826
https://doi.org/10.1103/physreva.99.053826
Autor:
Bisrat G, Assefa, Markku, Pekkarinen, Henri, Partanen, Joris, Biskop, Jari, Turunen, Jyrki, Saarinen
Publikováno v:
Optics express. 27(9)
Three-dimensional (3D) printing of imaging-quality optics has been challenging due to the tight tolerances on surface shape and roughness. We report on manufacturing such optics with Print optical Technology, which is based on modified ink-jet printi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::05bd00c777a193a5b0b29b51bf0385a4
https://pubmed.ncbi.nlm.nih.gov/31052801
https://pubmed.ncbi.nlm.nih.gov/31052801
Publikováno v:
Optics express. 27(5)
We present modified scanning-type wavefront folding interferometers (WFIs), which allow spatial coherence measurements of non-uniformly correlated fields, where the degree of coherence is a function of two absolute spatial coordinates instead of coor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::6099d745ed4772c5a26dc8a1d064ac74
https://pubmed.ncbi.nlm.nih.gov/30876339
https://pubmed.ncbi.nlm.nih.gov/30876339
Autor:
Henri Partanen, Jari Turunen, Bisrat G. Assefa, Jyrki Saarinen, Joris Biskop, Markku Pekkarinen
Publikováno v:
Organic Photonic Materials and Devices XXI.
The demand for disposable optics, especially in biomedical fields involving point of care testing systems has led to navigation for new low-cost and high quality optics fabrication processes. We demonstrate that 3D-printing of optics allows on-demand
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::261b4c8cde9ae973ab109e4f5ef028b8
https://doi.org/10.1117/12.2506010
https://doi.org/10.1117/12.2506010