TY - JOUR
T1 - Resonant meta-atoms with nonlinearities on demand
AU - Filonov, Dmitry
AU - Kramer, Yotam
AU - Kozlov, Vitali
AU - Malomed, Boris A.
AU - Ginzburg, Pavel
N1 - Publisher Copyright:
© 2016 Author(s).
PY - 2016/9/12
Y1 - 2016/9/12
N2 - Nonlinear light-matter interactions and their applications are constrained by properties of available materials. The use of metamaterials opens the way to achieve precise control over electromagnetic properties at a microscopic level, providing tools for experimental studies of complex nonlinear phenomena in photonics. Here, a doubly resonant nonlinear meta-atom is proposed, analyzed, and characterized in the GHz spectral range. The underlying structure is composed of a pair of split rings, resonant at both fundamental and nonlinear frequencies. The rings share a varactor diode, which serves as a microscopic source of nonlinearity. Flexible control over the coupling and near- and far-field patterns are reported, favoring the doubly resonant structure over other realizations. Relative efficiencies of the second and third harmonics, generated by the diode, are tailored by dint of the double-ring geometry, providing a guideline for selecting one frequency against another, using the design of the auxiliary structures. The on-demand control over the microscopic nonlinear properties enables developing a toolbox for experimental emulation of complex nonlinear phenomena.
AB - Nonlinear light-matter interactions and their applications are constrained by properties of available materials. The use of metamaterials opens the way to achieve precise control over electromagnetic properties at a microscopic level, providing tools for experimental studies of complex nonlinear phenomena in photonics. Here, a doubly resonant nonlinear meta-atom is proposed, analyzed, and characterized in the GHz spectral range. The underlying structure is composed of a pair of split rings, resonant at both fundamental and nonlinear frequencies. The rings share a varactor diode, which serves as a microscopic source of nonlinearity. Flexible control over the coupling and near- and far-field patterns are reported, favoring the doubly resonant structure over other realizations. Relative efficiencies of the second and third harmonics, generated by the diode, are tailored by dint of the double-ring geometry, providing a guideline for selecting one frequency against another, using the design of the auxiliary structures. The on-demand control over the microscopic nonlinear properties enables developing a toolbox for experimental emulation of complex nonlinear phenomena.
UR - http://www.scopus.com/inward/record.url?scp=84988484614&partnerID=8YFLogxK
U2 - 10.1063/1.4962838
DO - 10.1063/1.4962838
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AN - SCOPUS:84988484614
SN - 0003-6951
VL - 109
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 11
M1 - 111904
ER -