Mainz 2017 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 20: Nano-Optics II
Q 20.3: Talk
Tuesday, March 7, 2017, 11:30–11:45, P 11
Kerker Condition based Antenna for Collimation of Single NV Fluorescence — •Niko Nikolay1, Stefan Fasold2, Günter Kewes1, Isabelle Staude2, and Oliver Benson1 — 1Humboldt Universität zu Berlin, Germany — 2Friedrich-Schiller-University Jena, Germany
The main advantage of plasmonics compared to dielectric structures is their small size - typically in the subwavelength regime [1]. In combination with the concentration of the electromagnetic field in plasmonic antennae, a significant improvement of nanophotonic devices is expected. When high directivities are desired, these advantages however may vanish: Metallic collimating antennas, such as bull's eye or spiral antennas have sizes that are typically significantly larger than the operating wavelength [2]. With increasing size, also losses will become more prominent. When it comes to dielectric nanostructures the Kerker condition can be employed, as such structures can also support magnetic modes [3].
In this contribution we will introduce a dielectric antenna with a subwavelength size and discuss the coupling to the nitrogen vacancy center in nano diamond. Experimental results will be complemented by full numerical calculations.
[1] Schietinger, S. et al.,Nano letters, 9(4), 1694-1698.
[2] Lezec, H. J. et al., Science 297(5582), 820-822.
[3] Kerker, M. et al., JOSA, 73(6), 765-767.