Abstract
We combine photonic and electronic band structure engineering to create a surface-emitting quantum cascade microcavity laser. A high-index contrast two-dimensional photonic crystal is used to form a micro-resonator that simultaneously provides feedback for laser action and diffracts light vertically from the surface of the semiconductor surface. A top metallic contact allows electrical current injection and provides vertical optical confinement through a bound surface plasmon wave. The miniaturization and tailorable emission properties of this design are potentially important for sensing applications, while electrical pumping can allow new studies of photonic crystal and surface plasmon structures in nonlinear and near-field optics.
Highlights
More detailed expositions on these topics will be available in upcoming articles (S1,S2)
An electrically-insulating silicon nitride (SixNy) layer is deposited, and hexagonal windows are opened at the PC device sites
No mesa is etched around the devices, and only the openings in the SixNy define the regions of current injection
Summary
Colombelli, Raffaele, Kartik Srinivasan, Mariano Troccoli, Oskar Painter, Claire F.
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