We demonstrate helium-ion milled gold slot antennas with controllable 20-nm gap spacing that show large scattering polarization ratios of ~37× and resonance shifts with length. Antennas with larger gaps show comparable quality to gallium-milled antennas.

© 2016 Optical Society of America

PDF Article


You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
Login to access OSA Member Subscription