Second harmonic generation spectroscopy on hybrid plasmonic/dielectric nanoantennas

Light, Science & Applications
Heiko LinnenbankStefan Linden

Abstract

Plasmonic nanoantennas provide unprecedented opportunities to concentrate light fields in subwavelength-sized volumes. By placing a nonlinear dielectric nanoparticle in such a hot spot, one can hope to take advantage of both the field enhancement provided by nanoantennas and the large, nonlinear optical susceptibility of dielectric nanoparticles. To test this concept, we combine gold gap nanoantennas with second-order, nonlinear zinc sulfide nanoparticles, and perform second harmonic generation (SHG) spectroscopy on the combined hybrid dielectric/plasmonic nanoantennas as well as on the individual constituents. We find that SHG from the bare gold nanoantennas, even though it should be forbidden due to symmetry reasons, is several orders of magnitude larger than that of the bare zinc sulfide nanoparticles. Even stronger second harmonic signals are generated by the hybrid dielectric/plasmonic nanoantennas. Control experiments with nanoantennas containing linear lanthanum fluoride nanoparticles reveal; however, that the increased SHG efficiency of the hybrid dielectric/plasmonic nanoantennas does not depend on the nonlinear optical susceptibility of the dielectric nanoparticles but is an effect of the modification of the dielectri...Continue Reading

References

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Citations

Jun 28, 2019·Advanced Materials·Mariola O RamírezLuisa E Bausá
Nov 13, 2018·Beilstein Journal of Nanotechnology·Jérémy ButetOlivier J F Martin
Feb 12, 2017·Advanced Materials·Alejandro Gómez-TorneroMariola O Ramírez
Aug 9, 2017·Optics Express·Adi PickSteven G Johnson
Oct 1, 2019·Optics Letters·Tonglei ChengYasutake Ohishi
Jan 18, 2019·Optics Express·Rashid A GaneevChunlei Guo
Mar 7, 2019·Light, Science & Applications·Matan GalantyAdi Salomon
Apr 25, 2020·Research : a Science Partner Journal·Xuanmiao HongPeixiang Lu
Dec 17, 2019·ACS Nano·Yun-Hang QiuQu-Quan Wang
Feb 10, 2017·Nano Letters·Bernd MetzgerHarald Giessen
Aug 6, 2016·Nano Letters·Lili GuiHarald Giessen
Mar 28, 2018·Nano Letters·Godofredo BautistaMonika Fleischer
Jan 4, 2019·Nano Letters·Claude RenautRachel Grange
Feb 11, 2020·ACS Sensors·Ediz HerkertHarald Giessen
Jun 8, 2017·ACS Omega·Gelon AlbrechtHarald Giessen
Jun 16, 2017·Nano Letters·Manuel PeterStefan Linden

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Methods Mentioned

BETA
electron beam lithography

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