Engineered nonlinear materials using gold nanoantenna array

Vladimir P Drachev; Alexander V Kildishev; Joshua D Borneman; Kuo-Ping Chen; Vladimir M Shalaev; Konstantin Yamnitskiy; Robert A Norwood; Nasser Peyghambarian; Seth R Marder; Lazaro A Padilha; Scott Webster; Trenton R Ensley; David J Hagan; Eric W Van Stryland

doi:10.1038/s41598-017-19066-3

Engineered nonlinear materials using gold nanoantenna array

Sci Rep. 2018 Jan 15;8(1):780. doi: 10.1038/s41598-017-19066-3.

Authors

Vladimir P Drachev^{1

2}, Alexander V Kildishev³, Joshua D Borneman³, Kuo-Ping Chen³, Vladimir M Shalaev³, Konstantin Yamnitskiy⁴, Robert A Norwood⁴, Nasser Peyghambarian⁴, Seth R Marder⁵, Lazaro A Padilha^{6

7}, Scott Webster⁶, Trenton R Ensley^{6

8}, David J Hagan^{6

9}, Eric W Van Stryland^{6

9}

Affiliations

¹ Department of Physics and Advanced Materials & Manufacturing Institute, University of North Texas, Denton, Texas, 76203, USA. vladimir.drachev@unt.edu.
² Skolkovo Institute of Science and Technology, Moscow, 143026, Russia. vladimir.drachev@unt.edu.
³ School of Electrical and Computer Engineering and Birck Nanotechnology Center, Purdue University, West Lafayette, IN, 47907, USA.
⁴ College of Optical Sciences, University of Arizona, Tucson, AZ, 85721, USA.
⁵ Georgia Institute of Technology, Atlanta, GA, 30332, USA.
⁶ CREOL, The College of Optics and Photonics, University of Central Florida, Orlando, FL, 32816, USA.
⁷ Univ Estadual Campinas, UNICAMP, Sao Paulo, Brazil.
⁸ U.S. Army Research Laboratory, Adelphi, MD, 20783, USA.
⁹ Department of Physics, University of Central Florida, Orlando, FL, 32816, USA.

Abstract

Gold dipole nanoantennas embedded in an organic molecular film provide strong local electromagnetic fields to enhance both the nonlinear refractive index (n₂) and two-photon absorption (2PA) of the molecules. An enhancement of 53× for 2PA and 140× for nonlinear refraction is observed for BDPAS (4,4'-bis(diphenylamino)stilbene) at 600 nm with only 3.7% of gold volume fraction. The complex value of the third-order susceptibility enhancement results in a sign change of n₂ for the effective composite material relative to the pure BDPAS film. This complex nature of the enhancement and the tunability of the nanoantenna resonance allow for engineering the effective nonlinear response of the composite film.

Publication types

Research Support, U.S. Gov't, Non-P.H.S.