TY - JOUR
T1 - Toroidal dipolar excitations in all-dielectric nanostructures
AU - Xu, Lei
AU - Saadabad, Reza Masoudian
AU - Cai, Marcus
AU - Miroshnichenko, Andrey E.
N1 - Publisher Copyright:
© 2020 IOP Publishing Ltd.
PY - 2020/4/23
Y1 - 2020/4/23
N2 - We have numerically investigated toroidal dipolar excitation at optical frequencies in Si nanostructures. Our results show that, through either special structured pump illumination, or by adding an additional layer associated with geometric tuning, we are able to excite strong toroidal dipolar responses with suppressed electric dipolar excitations. These findings may further pave the way to exploit future applications of toroidal resonances including optical nonlinear enhancement, induced transparency for narrow-band filter, etc.
AB - We have numerically investigated toroidal dipolar excitation at optical frequencies in Si nanostructures. Our results show that, through either special structured pump illumination, or by adding an additional layer associated with geometric tuning, we are able to excite strong toroidal dipolar responses with suppressed electric dipolar excitations. These findings may further pave the way to exploit future applications of toroidal resonances including optical nonlinear enhancement, induced transparency for narrow-band filter, etc.
UR - http://www.scopus.com/inward/record.url?scp=85084132258&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/1461/1/012191
DO - 10.1088/1742-6596/1461/1/012191
M3 - Conference article
AN - SCOPUS:85084132258
SN - 1742-6588
VL - 1461
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012191
T2 - 4th International Conference on Metamaterials and Nanophotonics, METANANO 2019
Y2 - 15 July 2019 through 19 July 2019
ER -