Strong-Field Control of Plasmonic Properties in Core-Shell Nanoparticles

Powell JA, Li J, Summers A, Robatjazi SJ, Davino M, Rupp P, Saydanzad E, Sorensen CM, Rolles D, Kling MF, Trallero C, Thumm U, Rudenko A (2022)

Publication Type: Journal article

Publication year: 2022

Journal

ACS Photonics American Chemical Society

Book Volume: 9

Pages Range: 3515-3521

Journal Issue: 11

DOI: 10.1021/acsphotonics.2c00663

Abstract

Utilization of the plasmonic response in nanosystems is a key component of nanophotonics that is typically altered by varying the incident optical frequency or the material configuration. However, in this work we demonstrate that employing intense, femtosecond laser fields unlock nonlinear light-matter interactions such that precise control of the optical response is achieved solely by adjusting the incident intensity. The plasmonic properties of Au/SiO2nanoshells are manipulated by exploiting the nonlinear index of refraction of gold and experimentally observed by employing photoelectrons emitted during the interaction as a sensitive, sub-wavelength probe. A striking transition seen in the photoelectron energy spectrum between the weak and strong-field regime is verified by a modified Mie theory simulation that incorporates the nonlinear dielectric nanoshell response. The exhibited intensity-dependent optical control of the plasmonic response in prototypical core-shell nanoparticles paves the way toward ultrafast switching and opto-electronic signal modulation with more complex nanostructures.

Involved external institutions

Kansas State University US United States (USA) (US) University of Connecticut US United States (USA) (US) Ludwig-Maximilians-Universität (LMU) DE Germany (DE) Stanford National Accelerator Laboratory (SLAC) US United States (USA) (US)

How to cite

APA:

Powell, J.A., Li, J., Summers, A., Robatjazi, S.J., Davino, M., Rupp, P.,... Rudenko, A. (2022). Strong-Field Control of Plasmonic Properties in Core-Shell Nanoparticles. ACS Photonics, 9(11), 3515-3521. https://doi.org/10.1021/acsphotonics.2c00663

MLA:

Powell, Jeffrey A., et al. "Strong-Field Control of Plasmonic Properties in Core-Shell Nanoparticles." ACS Photonics 9.11 (2022): 3515-3521.

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