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.
| Original language | English (US) |
|---|---|
| Article number | 780 |
| Journal | Scientific Reports |
| Volume | 8 |
| Issue number | 1 |
| DOIs | |
| State | Published - Dec 1 2018 |
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ASJC Scopus subject areas
- General
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Engineered nonlinear materials using gold nanoantenna array. / Drachev, Vladimir P.; Kildishev, Alexander V.; Borneman, Joshua D.; Chen, Kuo Ping; Shalaev, Vladimir M.; Yamnitskiy, Konstantin; Norwood, Robert A; Peyghambarian, Nasser N; Marder, Seth R.; Padilha, Lazaro A.; Webster, Scott; Ensley, Trenton R.; Hagan, David J.; Van Stryland, Eric W.
In: Scientific Reports, Vol. 8, No. 1, 780, 01.12.2018.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Engineered nonlinear materials using gold nanoantenna array
AU - Drachev, Vladimir P.
AU - Kildishev, Alexander V.
AU - Borneman, Joshua D.
AU - Chen, Kuo Ping
AU - Shalaev, Vladimir M.
AU - Yamnitskiy, Konstantin
AU - Norwood, Robert A
AU - Peyghambarian, Nasser N
AU - Marder, Seth R.
AU - Padilha, Lazaro A.
AU - Webster, Scott
AU - Ensley, Trenton R.
AU - Hagan, David J.
AU - Van Stryland, Eric W.
PY - 2018/12/1
Y1 - 2018/12/1
N2 - 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.
AB - 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.
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U2 - 10.1038/s41598-017-19066-3
DO - 10.1038/s41598-017-19066-3
M3 - Article
VL - 8
JO - Scientific Reports
JF - Scientific Reports
SN - 2045-2322
IS - 1
M1 - 780
ER -