8 February 2011 New tracks toward 3D light harnessing: high Q slow Bloch mode engineering and coupling to 0D nanophotonic structures
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Abstract
We will show in this paper that a new approach combining Photonic crystal (PC) and nano-antennas (NA's) allows for an efficient addressing of NA using a wide Gaussian beam. First, we will present results from a phenomenological approach (coupled mode theory in the time domain) of this mixed device. We derive the key factors that govern the coupling processes and show that high Q PC structures are required for efficient coupling. The design rules for high Q PC structures providing resonant slow Bloch modes above the light line are presented, on the basis of FDTD simulation results. We will end the presentation with FDTD simulations of the mixed structure (PC+NA), confirming the prediction of the coupled mode theory. Preliminary technological realization will be presented, together with a discussion on potential applications for optical trapping.
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T. Benyattou, T. Benyattou, A. Bellarouci, A. Bellarouci, X. Letartre, X. Letartre, E. Gerelli, E. Gerelli, T. Zhang, T. Zhang, P. Viktorovitch, P. Viktorovitch, } "New tracks toward 3D light harnessing: high Q slow Bloch mode engineering and coupling to 0D nanophotonic structures", Proc. SPIE 7941, Integrated Optics: Devices, Materials, and Technologies XV, 79410R (8 February 2011); doi: 10.1117/12.873806; https://doi.org/10.1117/12.873806
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