Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Martin, Hafermann"'
Autor:
Alexander Koch, Hongyan Mei, Jura Rensberg, Martin Hafermann, Jad Salman, Chenghao Wan, Raymond Wambold, Daniel Blaschke, Heidemarie Schmidt, Jürgen Salfeld, Sebastian Geburt, Mikhail A. Kats, Carsten Ronning
Publikováno v:
Advanced Photonics Research, Vol 4, Iss 2, Pp n/a-n/a (2023)
Heavy and hyper doping of ZnO by a combination of gallium (Ga) ion implantation using a focused ion beam (FIB) system and post‐implantation laser annealing is demonstrated. Ion implantation allows for the incorporation of impurities with nearly arb
Externí odkaz:
https://doaj.org/article/e46dab54b73f4096a459f0aa4d857fa2
Autor:
Christian T. Plass, Valentina Bonino, Maurizio Ritzer, Lukas R. Jäger, Vicente Rey‐Bakaikoa, Martin Hafermann, Jaime Segura‐Ruiz, Gema Martínez‐Criado, Carsten Ronning
Publikováno v:
Advanced Science, Vol 10, Iss 1, Pp n/a-n/a (2023)
Abstract The dynamics of color centers, being a promising quantum technology, is strongly dependent on the local environment. A synergistic approach of X‐ray fluorescence analysis and X‐ray excited optical luminescence (XEOL) using a hard X‐ray
Externí odkaz:
https://doaj.org/article/b397b1deb97b4120a1e18283a1864e17
Autor:
Maximilian Zapf, Maurizio Ritzer, Lisa Liborius, Andreas Johannes, Martin Hafermann, Sven Schönherr, Jaime Segura-Ruiz, Gema Martínez-Criado, Werner Prost, Carsten Ronning
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-7 (2020)
Designing efficient nanowire chip-based electrical and optical devices remains a challenge. Here, the authors present an axial p-n junction GaAs nanowire X-ray detector that enables achieving a spatial resolution of 200 nm; probing the internal elect
Externí odkaz:
https://doaj.org/article/76e0867c35524acb9df7216ffe5817c9
Autor:
Christian T, Plass, Valentina, Bonino, Maurizio, Ritzer, Lukas R, Jäger, Vicente, Rey-Bakaikoa, Martin, Hafermann, Jaime, Segura-Ruiz, Gema, Martínez-Criado, Carsten, Ronning
Publikováno v:
Advanced science (Weinheim, Baden-Wurttemberg, Germany).
The dynamics of color centers, being a promising quantum technology, is strongly dependent on the local environment. A synergistic approach of X-ray fluorescence analysis and X-ray excited optical luminescence (XEOL) using a hard X-ray nanoprobe is a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::4668a9e4cb1632cc55241e927dd93f81
https://pubmed.ncbi.nlm.nih.gov/36403227
https://pubmed.ncbi.nlm.nih.gov/36403227
Autor:
Yang Liu, Zheru Qiu, Xinru Ji, Anton Lukashchuk, Jijun He, Johann Riemensberger, Martin Hafermann, Rui Ning Wang, Junqiu Liu, Carsten Ronning, Tobias J. Kippenberg
Publikováno v:
Science (New York, N.Y.). 376(6599)
Erbium-doped fiber amplifiers have revolutionized long-haul optical communications and laser technology. Erbium ions could equally provide a basis for efficient optical amplification in photonic integrated circuits. However, this approach has thus fa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1fb3ba019fb9d09668a5d05f186a77bd
https://pubmed.ncbi.nlm.nih.gov/35709282
https://pubmed.ncbi.nlm.nih.gov/35709282
Autor:
Chenghao Wan, Martin Hafermann, Tae Joon Park, Zhen Zhang, Yuzhe Xiao, Hongyan Mei, Shriram Ramanathan, Carsten Ronning, Mikhail Kats
Publikováno v:
Photonic and Phononic Properties of Engineered Nanostructures XII.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e733b13733e735533db475c2fc564bf3
https://doi.org/10.1117/12.2609034
https://doi.org/10.1117/12.2609034
Autor:
Maurizio Ritzer, Antonio Ambrosio, William L. Wilson, Axel Printschler, Maximilian Zapf, Martin Hafermann, Carsten Ronning, Yue Luo
Publikováno v:
ACS Applied Nano Materials. 3:4486-4493
The integration of phase-change materials into the design of optical metasurfaces already enables dynamically switchable, tunable, and reconfigurable optical devices. Their functionality is based o...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d877356b2459cd0a74b1f4a27d2ddff4
https://doi.org/10.1021/acsanm.0c00580
https://doi.org/10.1021/acsanm.0c00580
Autor:
Hongyan Mei, Alexander Koch, Chenghao Wan, Jura Rensberg, Zhen Zhang, Jad Salman, Martin Hafermann, Maximilian Schaal, Yuzhe Xiao, Raymond Wambold, Shriram Ramanathan, Carsten Ronning, Mikhail A. Kats
We demonstrate spatial modification of the optical properties of thin-film metal oxides, zinc oxide and vanadium dioxide as representatives, using a commercial focused ion beam (FIB) system. Using a Ga+ FIB and thermal annealing, we demonstrated vari
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4c7c692430088bd5e9991b23aef0de53
http://arxiv.org/abs/2202.01777
http://arxiv.org/abs/2202.01777
Autor:
Chenghao Wan, Martin Hafermann, Tae Joon Park, Zhen Zhang, Yuzhe Xiao, Hongyan Mei, Shriram Ramanathan, Carsten Ronning, Mikhail A. Kats
Publikováno v:
Conference on Lasers and Electro-Optics.
Using ion implantation, we engineered tunable thresholds of optical switches that incorporated frequency-selective surfaces (FSSs) with thin-film VO2. We also used a focused ion beam to selectively control any passband of an FSS-VO2 optical switch.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::78c0a1b7bf2a3143549874bad654ba6a
https://doi.org/10.1364/cleo_at.2022.jth6b.5
https://doi.org/10.1364/cleo_at.2022.jth6b.5
Autor:
Martin Hafermann, Sarah Walden
Semiconductor Metamaterials: Part One, Volume 116 in a two-part series surveys the state-of-the-art in material platforms for optical metasurfaces. Chapters cover Metasurfaces from materials with 2nd-order nonlinearity, Light Emitting Metasurfaces ba