Abstract

An important goal in nano science is to unlock previously inaccessible physics and dynamics within nanoscale systems by combining the efficient nanoscale field confinement/optical resolution (~10 nm) of optical antennae and the ultrafast temporal resolution (fs) inherent in optical studies with the capabilities of modern scanning probe techniques. Here we report on a significant step toward this goal using a novel nanofabricated coaxial antenna tip capable of recording useful Raman spectra in ~50 ms to acquire 256 by 256 pixel images on dielectric substrates with a full spectrum at each pixel.

© 2011 Optical Society of America