TY - GEN
T1 - Pure Nonlinear Optical Response in Plasmonic Nanoantennas
AU - Niv, Avi
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021/6/1
Y1 - 2021/6/1
N2 - In this talk, we present our study of a nonlinear optical effect distinct from current theory foresees [1]. To prove our claim, we have measured the SHG from arrays of gold-silver heterodimers and silver and gold homodimers such as the one shown in Fig 1(a). Our sample's unique feature is its size, which is smaller than the electromagnetic penetration depth in the respective metals - see the scale bar for comparison. The interaction, therefore, is highly dipolar, and thus nonexistent SHG should emerge. Non the less, What Fig 1(b) shows is that the Au-Ag nanoantenna produces substantial SHG while the Au-Au and Ag-Ag are negligible, as expected. Full-wave simulation of our samples, as shown in Fig. 1(c) , takes into account all known plasmonic confinement and enhancement effect, such as localized plasmons [2] , multimode interactions [3] , [4] , hybridization [5] , [6] , gap plasmons [7] , cascaded plasmons [8] , multipolar effects [9] , and silencing [10]. The simulation predicts little to none SHG for all material combinations in this case, with the topmost SHG from the Ag-Ag structure and without the experimental spectral peak. It is clear, therefore, that our results are beyond the conventional theory embedded in the simulation.
AB - In this talk, we present our study of a nonlinear optical effect distinct from current theory foresees [1]. To prove our claim, we have measured the SHG from arrays of gold-silver heterodimers and silver and gold homodimers such as the one shown in Fig 1(a). Our sample's unique feature is its size, which is smaller than the electromagnetic penetration depth in the respective metals - see the scale bar for comparison. The interaction, therefore, is highly dipolar, and thus nonexistent SHG should emerge. Non the less, What Fig 1(b) shows is that the Au-Ag nanoantenna produces substantial SHG while the Au-Au and Ag-Ag are negligible, as expected. Full-wave simulation of our samples, as shown in Fig. 1(c) , takes into account all known plasmonic confinement and enhancement effect, such as localized plasmons [2] , multimode interactions [3] , [4] , hybridization [5] , [6] , gap plasmons [7] , cascaded plasmons [8] , multipolar effects [9] , and silencing [10]. The simulation predicts little to none SHG for all material combinations in this case, with the topmost SHG from the Ag-Ag structure and without the experimental spectral peak. It is clear, therefore, that our results are beyond the conventional theory embedded in the simulation.
UR - http://www.scopus.com/inward/record.url?scp=85117596493&partnerID=8YFLogxK
U2 - 10.1109/CLEO/Europe-EQEC52157.2021.9542603
DO - 10.1109/CLEO/Europe-EQEC52157.2021.9542603
M3 - Conference contribution
T3 - Optics InfoBase Conference Papers
BT - 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021
PB - Institute of Electrical and Electronics Engineers
T2 - 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021
Y2 - 21 June 2021 through 25 June 2021
ER -