Gigahertz optical modulation resulting from coherent lattice oscillations induced by femtosecond laser pumping of 2D photonic crystals of gold-capped polystyrene microspheres

TitleGigahertz optical modulation resulting from coherent lattice oscillations induced by femtosecond laser pumping of 2D photonic crystals of gold-capped polystyrene microspheres
Publication TypeJournal Article
Year of Publication2008
AuthorsHuang, WY, Qian, W, EL-Sayed, MA
JournalAdvanced Materials
Volume20
Pagination733-+
Date PublishedFeb
ISBN Number0935-9648
Accession NumberWOS:000253741400012
Abstract

A gigahertz all-optical modulation technique, based on a mechanism in which the modulation of the transmitted light is caused by the coherent oscillation of the phonon modes of gold caps on periodic polystyrene sphere monolayer arrays, is demonstrated. The modulation frequency can be tuned by changing the size of the polystyrene spheres.

DOI10.1002/adma.200701543