Research output per year
Research output per year
Ali A. Darki*, Aurélien Dantan, Jens V. Nygaard, Søren P. Madsen, Alexios Parthenopoulos, Christian Toft-Vandborg, Christian Vandborg
Research output: Contribution to book/anthology/report/proceeding › Article in proceedings › Research › peer-review
We investigate spatial differentiation of optical beams using guided mode resonances in suspended dielectric one-dimensional photonic crystals. Various SiN grating structures are characterized under various incidence, polarization and beam size illuminations. We first observe first- and second-order spatial differentiation in transmission of Gaussian beams impinging at oblique and normal incidence, respectively, on gratings designed to be resonant for either TE- or TM-polarized incident light. Polarization-independent first-order spatial differentiation is then demonstrated with a specifically designed, doubly-resonant, one-dimensional and symmetric grating structure. Such ultrathin and essentially lossfree nanostructured dielectric films are promising for various optical processing, optomechanics and sensing applications.
Original language | English |
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Title of host publication | Optics, Photonics and Digital Technologies for Imaging Applications VII |
Editors | Peter Schelkens, Tomasz Kozacki |
Publisher | SPIE - International Society for Optical Engineering |
Publication date | May 2022 |
Article number | 121380D |
ISBN (Electronic) | 9781510651524 |
DOIs | |
Publication status | Published - May 2022 |
Event | Optics, Photonics and Digital Technologies for Imaging Applications VII 2022 - Virtual, Online Duration: 9 May 2022 → 15 May 2022 |
Conference | Optics, Photonics and Digital Technologies for Imaging Applications VII 2022 |
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City | Virtual, Online |
Period | 09/05/2022 → 15/05/2022 |
Series | Proceedings of SPIE - The International Society for Optical Engineering |
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Volume | 12138 |
ISSN | 0277-786X |
Research output: Book/anthology/dissertation/report › Ph.D. thesis