Zobrazeno 1 - 10
of 95
pro vyhledávání: '"Cedrik Meier"'
Autor:
David Hähnel, Christian Golla, Maximilian Albert, Thomas Zentgraf, Viktor Myroshnychenko, Jens Förstner, Cedrik Meier
Publikováno v:
Light: Science & Applications, Vol 12, Iss 1, Pp 1-8 (2023)
Abstract We present strong enhancement of third harmonic generation in an amorphous silicon metasurface consisting of elliptical nano resonators. We show that this enhancement originates from a new type of multi-mode Fano mechanism. These ‘Super-Fa
Externí odkaz:
https://doaj.org/article/ca6d796a37084a8c93180d0c159be6c4
Stimulation and Enhancement of Near‐Band‐Edge Emission in Zinc Oxide by Distributed Bragg Reflectors
Publikováno v:
Advanced Materials Interfaces, Vol 9, Iss 10, Pp n/a-n/a (2022)
Abstract The free exciton transition (near‐band‐edge emission, NBE) of ZnO at ≈388 nm can be strongly enhanced and even stimulated by an underlying photonic structure. 1D Photonic crystals, so‐called distributed Bragg reflectors, are utilized
Externí odkaz:
https://doaj.org/article/83d5353a8900474f9d71e9bc5361e8f5
Publikováno v:
Photonics, Vol 9, Iss 12, p 985 (2022)
We study the influence of gold nanoantennas on the photoluminescence signal of silicon nanocrystals. Unlike bulk silicon, which only exhibits low photoluminescence at room temperature due to its indirect band gap, silicon nanocrystals have the advant
Externí odkaz:
https://doaj.org/article/017892f88a7d4cb4bf1a5c947f984d31
Autor:
Marcel Ruth, Cedrik Meier
Publikováno v:
AIP Advances, Vol 3, Iss 7, Pp 072114-072114 (2013)
Multi-layer thin films are often the basis of photonic devices. Zinc oxide (ZnO) with its excellent optoelectronic properties can serve as a high quality emitter in structures like microdisks or photonic crystals. Here, we present a detailed study on
Externí odkaz:
https://doaj.org/article/6d55eec8419d43b6af7fb7acde28cd2c
Publikováno v:
Optics express. 30(4)
Electric-field-induced second harmonic generation (EFISH) as a third order nonlinear process is of high practical interest for the realization of functional nonlinear structures. EFISH in materials with vanishing χ(2) and non-zero χ(3) offers huge
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aeb791e8db55eda7841940da2db11410
https://pubmed.ncbi.nlm.nih.gov/35209459
https://pubmed.ncbi.nlm.nih.gov/35209459
Publikováno v:
Physical Review B. 103
Optical second harmonic generation (SHG) on excitons is studied in polar ZnO/(Zn,Mg)O quantum wells grown on ZnO and sapphire substrates. We observe SHG signal on exciton resonances in a symmetry-forbidden geometry for light propagation along the $c$
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::263bf3a0fa44411752d99f3deb70bf75
https://doi.org/10.1103/physrevb.103.195311
https://doi.org/10.1103/physrevb.103.195311
Autor:
Tobias Henksmeier, Bernhard Reineke, Martin Eppinger, Dirk Reuter, Thomas Zentgraf, Cedrik Meier
Publikováno v:
physica status solidi (a)
GaAs-(111)-nanostructures exhibiting second harmonic generation are new building blocks in nonlinear optics. Such structures can be fabricated through epitaxial lift-off employing selective etching of Al-containing layers and subsequent transfer to g
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b6a01680ae9167605eda805e89256e45
Autor:
Manfred Hammer, Maximilian Protte, Christine Silberhorn, Jens Förstner, Lena Ebers, Tim J. Bartley, Viktor Quiring, Jan Philipp Höpker, M. Albert, Cedrik Meier
Publikováno v:
OSA Quantum 2.0 Conference.
We fabricate silicon tapers to increase the mode overlap of superconducting detectors on Ti:LiNbO3 waveguides. Mode images show a reduction in mode size from 6 µm to 2 µm FWHM, agreeing with beam propagation simulations.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::561e53bcafb3c26bee0e4af3808f4422
https://doi.org/10.1364/quantum.2020.qth7a.8
https://doi.org/10.1364/quantum.2020.qth7a.8
Autor:
Sandro Phil Hoffmann, Thomas Zentgraf, Jens Förstner, M. Albert, Nils Weber, Cedrik Meier, Denis Sievers
Publikováno v:
ACS Photonics. 5:1933-1942
For many applications in photonics, e.g., free-space telecommunication, efficient UV sources are needed. However, optical excitation of such sources requires photons of even higher energies, which are difficult to integrate into photonic circuits. He
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1ee9d6587c9965d586207d3d30117f43
https://doi.org/10.1021/acsphotonics.7b01228
https://doi.org/10.1021/acsphotonics.7b01228
Publikováno v:
Nano Letters. 17:3171-3175
Security of optical information is of great importance in modern society. Many cryptography techniques based on classical and quantum optics have been widely explored in the linear optical regime. Nonlinear optical encryption in which encoding and de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f16d813d05066a340a6d1f7bb8f7576d
https://doi.org/10.1021/acs.nanolett.7b00676
https://doi.org/10.1021/acs.nanolett.7b00676