Abstract
Recent efforts have targeted manipulation of nanomaterial vibrational modes in applications such as chemical/mass sensing, optical switching, and phonon-driven photochemistry. While impulsive photoexcitation can generate coherent phonons, multiple excitation pulses offer the prospect of control and manipulation of coherent phonon modes for functions of optical memory and logic. Here, we use such an approach to inject an arbitrary coherent phonon phase into a colloidal ensemble of highly monodisperse gold bipyramids. We then demonstrate that this technique can be applied to a system that exhibits plasmon-exciton coupling to further manipulate the hybridization of the system. This ability to manipulate acoustic phonons and hybridization can enable optical logic applications of acoustic phonons in addition to optical memory.
| Original language | English (US) |
|---|---|
| Article number | 153102 |
| Journal | Applied Physics Letters |
| Volume | 116 |
| Issue number | 15 |
| DOIs | |
| State | Published - Apr 13 2020 |
Funding
We acknowledge support from the Ultrafast Initiative of the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, through the Argonne National Laboratory under Contract No. DE-AC02-06CH11357. The use of the Center for Nanoscale Materials, an Office of Science user facility, was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357. We also acknowledge Professor Naomi Halas for generously providing us with TCC. The submitted manuscript has been created by UChicago Argonne, LLC, Operator of Argonne National Laboratory (“Argonne”). Argonne, a U.S. Department of Energy Office of Science Laboratory, operated under Contract No. DE-AC02-06CH11357. The U.S. Government retains for itself and others acting on its behalf, a paid-up nonexclusive, irrevocable worldwide license in the said article to reproduce and prepare derivative works, distribute copies to the public, and perform publicly and display publicly, by or on behalf of the Government. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan. http://energy.gov/downloads/doe-public-access-plan.
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)