Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Hallvard Angelskår"'
Autor:
Angela M. Baracu, Christopher A. Dirdal, Andrei M. Avram, Adrian Dinescu, Raluca Muller, Geir Uri Jensen, Paul Conrad Vaagen Thrane, Hallvard Angelskår
Publikováno v:
Micromachines, Vol 12, Iss 5, p 501 (2021)
The research field of metasurfaces has attracted considerable attention in recent years due to its high potential to achieve flat, ultrathin optical devices of high performance. Metasurfaces, consisting of artificial patterns of subwavelength dimensi
Externí odkaz:
https://doaj.org/article/303bbced3a674759b02a5aef8c2614b5
Publikováno v:
Ultrasonics. 96:160-164
We have investigated transmission of ultrasound signals from a speaker in air through a 400 µm thick borosilicate glass plate, similar to those found in consumer electronics products such as mobile phones and tablets. In order to enhance transmissio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6afa87b1da91971174a4bd0ed4073829
https://doi.org/10.1016/j.ultras.2019.01.011
https://doi.org/10.1016/j.ultras.2019.01.011
Autor:
Hallvard Angelskår, James S. Wilkinson, Carlos Domínguez, Øystein Ivar Helle, Ganapathy Senthil Murugan, David A. Coucheron, Balpreet Singh Ahluwalia
Publikováno v:
20735-20746
Optics Express
Optics Express
On-chip super-resolution optical microscopy is an emerging field relying on waveguide excitation with visible light. Here, we investigate two commonly used high-refractive index waveguide platforms, tantalum pentoxide (Ta2O5) and silicon nitride (Si3
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::32f6e1d8cc3a63dc61e4a1ff867a21bc
http://arxiv.org/abs/2101.10235
http://arxiv.org/abs/2101.10235
Autor:
Christopher A. Dirdal, Jo Gjessing, Hallvard Angelskår, Paul Conrad Vaagen Thrane, Geir Uri Jensen, Daniel Alfred Ordnung
We demonstrate the fabrication of diffraction-limited dielectric metasurface lenses for NIR by the use of standard industrial high-throughput silicon processing techniques: UV nano imprint lithography (UV-NIL) combined with continuous reactive ion et
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5183ad2035d7fab9040e7357cd493b49
http://arxiv.org/abs/2004.11133
http://arxiv.org/abs/2004.11133
Autor:
Adrian Dinescu, Angela Baracu, Hallvard Angelskår, Raluca Muller, Christopher A. Dirdal, Paul Conrad Vaagen Thrane, Andrei Avram, Geir Uri Jensen
Publikováno v:
Micromachines
Volume 12
Issue 5
Micromachines, Vol 12, Iss 501, p 501 (2021)
Volume 12
Issue 5
Micromachines, Vol 12, Iss 501, p 501 (2021)
The research field of metasurfaces has attracted considerable attention in recent years due to its high potential to achieve flat, ultrathin optical devices of high performance. Metasurfaces, consisting of artificial patterns of subwavelength dimensi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f2cd0f9ae7196746d2e04c35b617ec1b
https://doi.org/10.3390/mi12050501
https://doi.org/10.3390/mi12050501
Publikováno v:
Journal of Crystal Growth. 367:68-72
Oxygen induced stacking faults (OSFs) are mainly seen in oxygen rich wafers from the seed end of Cz-silicon crystals. In wafers this ring shaped OSF-region delineates a border between two defect regions; usually silicon self-interstitials dominate ou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f5056415804465576c7c5e690c07ca57
https://doi.org/10.1016/j.jcrysgro.2012.12.148
https://doi.org/10.1016/j.jcrysgro.2012.12.148
Publikováno v:
Conference on Lasers and Electro-Optics.
A low-power infrared source based on a silicon photonic-crystal membrane has been designed. Temperature distribution and reflection spectrum has been simulated. Large narrowband IR absorption is obtained with optimal material doping.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::361aae7c1893e8234967ae0a41e77005
https://doi.org/10.1364/cleo_at.2016.aw4k.6
https://doi.org/10.1364/cleo_at.2016.aw4k.6
Autor:
Halvard Haug, Tine Uberg Nærland, Hallvard Angelskår, Lars Arnberg, Rune Søndenå, Erik Stensrud Marstein
Publikováno v:
IEEE Journal of Photovoltaics
Twenty different boron-doped Czochralski silicon materials have been analyzed for light-induced degradation. The carrier lifetime degradation was monitored by an automated quasi-steady-state photoconductance setup with an externally controlled bias l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3ce484416d39dc4794c187b4255d5af3
http://hdl.handle.net/11250/2451701
http://hdl.handle.net/11250/2451701
Publikováno v:
Journal of Applied Physics
In this paper, we present a new method for studying the light induced degradation process, in which the minority carrier density is monitored directly during light soaking by photoluminescence imaging. We show experimentally that above a certain mino
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cd4908ff03e4b6eca3bffcb4046d7a95
https://hdl.handle.net/11250/2452033
https://hdl.handle.net/11250/2452033
Publikováno v:
Optics express. 18(16)
We report on simulations and measurements of focusing diffractive optical elements, fabricated as two-level binary optics. The diffractive optical elements are designed to separate and focus four specific wavelengths in the infrared. The simulations
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5ceffa638e9b3b927df3d49d094f8b21
https://pubmed.ncbi.nlm.nih.gov/20721109
https://pubmed.ncbi.nlm.nih.gov/20721109