Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Rasmus E. Christiansen"'
Autor:
Corey A. Richards, Christian R. Ocier, Dajie Xie, Haibo Gao, Taylor Robertson, Lynford L. Goddard, Rasmus E. Christiansen, David G. Cahill, Paul V. Braun
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-11 (2023)
Abstract Compact visible wavelength achromats are essential for miniaturized and lightweight optics. However, fabrication of such achromats has proved to be exceptionally challenging. Here, using subsurface 3D printing inside mesoporous hosts we dens
Externí odkaz:
https://doaj.org/article/eb671b63c3a044b5ab7d3015a2f6c2f3
Publikováno v:
Yao, W, Verdugo, F, Everitt, H O, Christiansen, R E & Johnson, S G 2023, ' Designing structures that maximize spatially averaged surface-enhanced Raman spectra ', Optics Express, vol. 31, no. 3, pp. 4964-4977 . https://doi.org/10.1364/OE.472646
We present a general framework for inverse design of nanopatterned surfaces that maximize spatially averaged surface-enhanced Raman (SERS) spectra from molecules distributed randomly throughout a material or fluid, building upon a recently proposed t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::05eb1285f8324f2c1dd1209507f8e49b
https://orbit.dtu.dk/en/publications/0c6709ff-5134-4b68-840b-5b147eaf0c82
https://orbit.dtu.dk/en/publications/0c6709ff-5134-4b68-840b-5b147eaf0c82
Publikováno v:
Science China Physics, Mechanics & Astronomy. 65
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0c4a3ab37789ae10ac67745734399996
https://doi.org/10.1007/s11433-021-1854-2
https://doi.org/10.1007/s11433-021-1854-2
Publikováno v:
Yao, W, Verdugo, F, Christiansen, R E & Johnson, S G 2022, ' Trace formulation for photonic inverse design with incoherent sources ', Structural and Multidisciplinary Optimization, vol. 65, no. 11, 336 . https://doi.org/10.1007/s00158-022-03389-5
Spatially incoherent light sources, such as spontaneously emitting atoms, naively require Maxwell's equations to be solved many times to obtain the total emission, which becomes computationally intractable in conjunction with large-scale optimization
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3f968642e1a5b6485f0d1091b63fc02a
https://orbit.dtu.dk/en/publications/7989f126-c495-4560-997e-428a91f838e8
https://orbit.dtu.dk/en/publications/7989f126-c495-4560-997e-428a91f838e8
Publikováno v:
Christiansen, R E, Kristensen, P T, Mørk, J & Sigmund, O 2023, ' Impact of figures of merit in photonic inverse design ', Optics Express, vol. 31, no. 5, pp. 8363-8374 . https://doi.org/10.1364/OE.482380
The rates of optical processes, such as two-photon absorption and spontaneous photon emission, are strongly dependent on the environment in which they take place, easily varying by orders of magnitude between different settings. Using topology optimi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c3e517ba258d1bdef3cae60a8d0f9519
https://doi.org/10.1364/oe.482380
https://doi.org/10.1364/oe.482380
Autor:
Steven G. Johnson, Mohammed Benzaouia, Alexander Cerjan, Charles Roques-Carmes, Rasmus E. Christiansen, Francesc Verdugo, Wenjie Yao, Zin Lin
Publikováno v:
Active Photonic Platforms XIII.
Periodic wavelength-scale surface patterns have long been used in the context of lasing and spontaneous emission to enhance emission by light trapping (distributed Bragg resonances). Buried within these well-known devices, however, are theoretical my
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4dba3a289947708d04ca2099be0d9b85
https://doi.org/10.1117/12.2595792
https://doi.org/10.1117/12.2595792
Autor:
Søren Engelberth Hansen, Jesper Moerk, Rasmus E. Christiansen, Søren Stobbe, Babak Vosoughi Lahijani, Marcus Albrechtsen, Nicolas Stenger, Laura Casses, Vy Thi Hoang Nguyen, Henri Jansen, Ole Sigmund
Optical nanocavities confine and store light, which is essential to increase the interaction between photons and electrons in semiconductor devices, enabling, e.g., lasers and emerging quantum technologies. While temporal confinement has improved by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::76742366324375467839aaecf7bbea9e
https://doi.org/10.21203/rs.3.rs-738060/v1
https://doi.org/10.21203/rs.3.rs-738060/v1
Autor:
Charles Roques-Carmes, Zin Lin, Rasmus E. Christiansen, Yannick Salamin, Steven E. Kooi, John D. Joannopoulos, Steven G. Johnson, Marin Soljačić
Optical metasurfaces have been heralded as the platform to integrate multiple functionalities in a compact form-factor, potentially replacing bulky components. A central stepping stone towards realizing this promise is the demonstration of multifunct
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a231a7c93fadaca2a4388f6e0b109417
http://arxiv.org/abs/2105.11326
http://arxiv.org/abs/2105.11326
Publikováno v:
Pan, Y, Christiansen, R E, Michon, J, Hu, J & Johnson, S G 2021, ' Topology Optimization of Surface-enhanced Raman Scattering Substrates ', Applied Physics Letters, vol. 119, 061601 . https://doi.org/10.1063/5.0055148
Surface-enhanced Raman spectroscopy is a powerful and versatile sensing method with a detection limit down to the single molecule level. In this article, we demonstrate how topology optimization (TopOpt) can be used for designing surface enhanced Ram
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::78d33d48b8ba8203cff0f67f40a8ad10
http://arxiv.org/abs/2101.11352
http://arxiv.org/abs/2101.11352
Autor:
Rasmus E. Christiansen, Ole Sigmund
Publikováno v:
Christiansen, R E & Sigmund, O 2021, ' Inverse design in photonics by topology optimization: tutorial ', Journal of the Optical Society of America-B, vol. 38, no. 2, pp. 496-509 . https://doi.org/10.1364/JOSAB.406048
Topology optimization methods for inverse design of nano-photonic systems have recently become extremely popular and are presented in various forms and under various names. Approaches comprise gradient and non-gradient based algorithms combined with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3d4f8db58930222a795f0723e7e95f88
https://orbit.dtu.dk/en/publications/1e507209-ce84-4abe-8cb9-75cd30bbc97b
https://orbit.dtu.dk/en/publications/1e507209-ce84-4abe-8cb9-75cd30bbc97b