Digital phase control in a Y-coupled plasmonic terahertz laser system

摘要

Electrically independent terahertz quantum cascade lasers in a Y configuration are coupled via the evanescent electromagnetic field in their shared substrate. Switchable lasing mode solutions are defined in one laser by a longitudinal computer generated hologram introduced to it's plasmonic waveguide. When operated together, this control is extended to the coupled, unmodified laser. © 2012 IEEE.