Abstract

We reported that the spectral properties of surface plasmon resonance on the hybrid resonant structure of gold straight and curvilinear structures and demonstrated it showed the electromagnetically induced transparency (EIT)-like phenomenon [1]. At the frequency of EIT, the dark plasmon mode was excited on the gold straight rod, but it could not be observed by optical image due to the nonradiative nature. In this work, we introduced the photoemission electron microscope (PEEM) technique with a near-infrared femtosecond laser to visualize the field distribution of the plasmonic modes excited on the hybrid gold nanostructures.

© 2014 Japan Society of Applied Physics, Optical Society of America