Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Atri Halder"'
Autor:
Isaac Doughan, Atsu L. Asilevi, Atri Halder, Tian-Long Guo, Erika Mogni, Michele Celebrano, Marco Finazzi, Giovanni Pellegrini, Paolo Biagioni, Emiliano Descrovi, Matthieu Roussey, Jari Turunen
Publikováno v:
APL Photonics, Vol 9, Iss 4, Pp 046106-046106-8 (2024)
The resonant excitation of Bloch Surface Waves (BSWs) in dielectric one-dimensional photonic crystals is becoming a realistic photonic solution for surface integration in many domains, from spectroscopy to local field management. Bringing BSWs to ult
Externí odkaz:
https://doaj.org/article/c7ed5db6560f44cd9e6ed88fbd8bda6c
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
Autor:
Jyrki Laatikainen, Meilan Luo, Atri Halder, Matias Koivurova, Tero Setälä, Jari Turunen, Ari Tapio Friberg
Publikováno v:
Journal of the Optical Society of America A.
Publikováno v:
Journal of the Optical Society of America. A, Optics, image science, and vision. 39(12)
The most frequently used experimental techniques for measuring the spatial coherence properties of classical light fields in the space–frequency and space–time domains are reviewed and compared, with some attention to polarization effects. In add
Single-shot measurement of overall degree of spectral coherence : Bulk-generated supercontinuum case
Spectral and temporal correlations determine the majority of pulse properties, and a high degree of coherence is needed for minimizing the pulse length. However, there is no simple way to quantify these correlations experimentally, and nonlinear meth
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fd66711f5beb9cb108795bc1200f507d
https://trepo.tuni.fi/handle/10024/144386
https://trepo.tuni.fi/handle/10024/144386
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
Poincaré sphere representation of scalar two-beam interference under spatial unitary transformations
Publikováno v:
Optics letters. 46(22)
We consider two partially correlated scalar light beams in a spatially unitary interference setup. We introduce a state vector in a Poincaré-sphere-like geometrical configuration that fully specifies such an optical system and its evolution under sp
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
Autor:
Asamoah, Benjamin O, Partanen, Henri, Sughra Mohamed, Heikkinen, Janne, Atri Halder, Koivurova, Matias, Neˇcada, Marek, Setala, Tero, Turunen, Jari, Friberg, Ari T, Hakala, Tommi K
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0fb30e6bb24862006c2a74020d1f3f98
Publikováno v:
Journal of Optics. 23:035501
We consider the spectral spatial coherence characteristics of scalar light fields in second-harmonic generation in an optically non-linear medium. Specifically, we take the fundamental-frequency (incident) field to be a Gaussian Schell-model (GSM) be