Browsing SINTEF Open by Author "Grepstad, Jon Olav"
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Detection of single nano-defects in photonic crystals between crossed polarizers
Grepstad, Jon Olav; Kaspar, Peter; Johansen, Ib-Rune; Solgaard, Olav; Sudbø, Aasmund (Journal article, 2013)We investigate, by simulations and experiments, the light scattering of small particles trapped in photonic crystal membranes supporting guided resonance modes. Our results show that, due to amplified Rayleigh small particle ... -
Finite-size limitations on quality factor of guided resonance modes in 2D photonic crystals
Grepstad, Jon Olav; Greve, Martin Møller; Holst, Bodil; Johansen, Ib-Rune; Solgaard, Olav; Sudbø, Aasmund (Journal article, 2013)High-Q guided resonance modes in two-dimensional photonic crystals, enable high field intensity in small volumes that can be exploited to realize high performance sensors. We show through simulations and experiments how ... -
Photonic-crystal membranes for optical detection of single nano-particles, designed for biosensor application
Grepstad, Jon Olav; Kaspar, Peter; Solgaard, Olav; Johansen, Ib-Rune; Sudbø, Aasmund (Journal article, 2012)A sensor designed to detect bio-molecules is presented. The sensor exploits a planar 2D photonic crystal (PC) membrane with sub-micron thickness and through holes, to induce high optical fields that allow detection of ...