Structural second-order nonlinearity in plasmonic metamaterials

TY - JOUR

T1 - Structural second-order nonlinearity in plasmonic metamaterials

AU - Wells, Brian

AU - Bykov, Anton Yu

AU - Marino, Giuseppe

AU - Nasir, Mazhar E.

AU - Zayats, Anatoly V.

AU - Podolskiy, Viktor A.

PY - 2018/12/20

Y1 - 2018/12/20

N2 - Nonlinear processes are at the core of many optical technologies whose further development require optimized materials suitable for nanoscale integration. Here we demonstrate the emergence of a strong bulk second-order nonlinear response in a plasmonic nanorod composite comprised of centrosymmetric materials. We develop an effective-medium description of the underlying physics, compare its predictions to the experimental results, and analyze the limits of its applicability. We demonstrate strong tunable generation of the p-polarized second-harmonic light in response to either s-orp-polarized excitation. High second-harmonic enhancement is observed for fundamental frequencies in the epsilon-near-zero spectral range. The work demonstrates emergence of structurally tunable nonlinear optical response in plasmonic composites and presents a new nonlinear optical platform suitable for integrated nonlinear photonics.

AB - Nonlinear processes are at the core of many optical technologies whose further development require optimized materials suitable for nanoscale integration. Here we demonstrate the emergence of a strong bulk second-order nonlinear response in a plasmonic nanorod composite comprised of centrosymmetric materials. We develop an effective-medium description of the underlying physics, compare its predictions to the experimental results, and analyze the limits of its applicability. We demonstrate strong tunable generation of the p-polarized second-harmonic light in response to either s-orp-polarized excitation. High second-harmonic enhancement is observed for fundamental frequencies in the epsilon-near-zero spectral range. The work demonstrates emergence of structurally tunable nonlinear optical response in plasmonic composites and presents a new nonlinear optical platform suitable for integrated nonlinear photonics.

UR - http://www.scopus.com/inward/record.url?scp=85059098523&partnerID=8YFLogxK

U2 - 10.1364/OPTICA.5.001502

DO - 10.1364/OPTICA.5.001502

M3 - Article

AN - SCOPUS:85059098523

SN - 2334-2536

VL - 5

SP - 1502

EP - 1507

JO - Optica

JF - Optica

IS - 12

ER -