@article{59cf4338b48f4050ace9f2758120dce8,
title = "Engineered nonlinear materials using gold nanoantenna array",
abstract = "Gold dipole nanoantennas embedded in an organic molecular film provide strong local electromagnetic fields to enhance both the nonlinear refractive index (n 2) 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 n 2 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.",
author = "Drachev, {Vladimir P.} and Kildishev, {Alexander V.} and Borneman, {Joshua D.} and Chen, {Kuo Ping} and Shalaev, {Vladimir M.} and Konstantin Yamnitskiy and Norwood, {Robert A.} and Nasser Peyghambarian and Marder, {Seth R.} and Padilha, {Lazaro A.} and Scott Webster and Ensley, {Trenton R.} and Hagan, {David J.} and {Van Stryland}, {Eric W.}",
note = "Funding Information: E.V.S. and D.J.H. thank the Air Force Office of Scientific Research MURI grant FA9550-10-1-0558, the National Science Foundation grant DMR-1609895 and Army Research Laboratory (W911NF-15-2-0090). Purdue University acknowledges the Air Force Office of Scientific Research (AFOSR) MURI grant (FA9550-12-1-0389). AVK would like to acknowledge support from DARPA/DSO Extreme Optics and Imaging (EXTREME) Program. Publisher Copyright: {\textcopyright} 2018 The Author(s).",
year = "2018",
month = dec,
day = "1",
doi = "10.1038/s41598-017-19066-3",
language = "English (US)",
volume = "8",
journal = "Scientific Reports",
issn = "2045-2322",
publisher = "Nature Publishing Group",
number = "1",
}