TY - JOUR
T1 - Experimental verification of the concept of all-dielectric nanoantennas
AU - Filonov, Dmitry S.
AU - Krasnok, Alexander E.
AU - Slobozhanyuk, Alexey P.
AU - Kapitanova, Polina V.
AU - Nenasheva, Elizaveta A.
AU - Kivshar, Yuri S.
AU - Belov, Pavel A.
PY - 2012/5/14
Y1 - 2012/5/14
N2 - Being motivated by the recent theoretical proposal of nanoantennas based on high-permittivity dielectric spheres [A. E. Krasnok, JETP Lett. 94, 22113 (2011)], we suggest and verify experimentally the concept of all-dielectric antennas in the microwave frequency range. In addition to the electric resonance, each sphere exhibits a very strong magnetic resonance, resulting in a narrow radiation pattern and overall high directivity of such antennas. We find an excellent agreement between the experimental data and numerical results and verify directly high-performance characteristics of such all-dielectric antennas potentially scalable to the nanoscale and operation at the optical frequency range.
AB - Being motivated by the recent theoretical proposal of nanoantennas based on high-permittivity dielectric spheres [A. E. Krasnok, JETP Lett. 94, 22113 (2011)], we suggest and verify experimentally the concept of all-dielectric antennas in the microwave frequency range. In addition to the electric resonance, each sphere exhibits a very strong magnetic resonance, resulting in a narrow radiation pattern and overall high directivity of such antennas. We find an excellent agreement between the experimental data and numerical results and verify directly high-performance characteristics of such all-dielectric antennas potentially scalable to the nanoscale and operation at the optical frequency range.
UR - http://www.scopus.com/inward/record.url?scp=84861801531&partnerID=8YFLogxK
U2 - 10.1063/1.4719209
DO - 10.1063/1.4719209
M3 - Article
SN - 0003-6951
VL - 100
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 20
M1 - 201113
ER -