Picosecond optomechanical oscillations in metal-polymer microcavities

Katherine Akulov, Tal Schwartz

Research output: Contribution to journalArticlepeer-review

Abstract

We experimentally study mechanical vibrations in planar Fabry–Perot microcavities made of metallic mirrors and a polymer spacer, using broadband pump-probe spectroscopy. These acoustic waves oscillate at a picosecond time-scale and result in spectral oscillations of the cavity transmission spectrum. We find that the oscillations are initiated at the metal mirrors and that their temporal dynamics match the elastic modes of the polymer layer, indicating that mechanical momentum is transferred within the structure. Such structures combine the strong optical absorption of metals with the elasticity and the processability of polymers, which open the road to a new class of optomechanical devices.

Original languageEnglish
Pages (from-to)2411-2414
Number of pages4
JournalOptics Letters
Volume42
Issue number13
DOIs
StatePublished - 1 Jul 2017

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