Figure 1: Schematic of the plasmonic dots-in-a-well (DWELL) focal plane array.
From: A monolithically integrated plasmonic infrared quantum dot camera
(a) Heterostructure schematic and band diagram of the DWELL absorber. (b)Schematic view of the surface plasmon (SP) structure defined on one half of the DWELL FPA after hybridization with a read-out integrated circuit (ROIC) and subsequent substrate removal. (c) Zoomed-in image showing the FPA bonded to the ROIC along with the SP electric field (Ez) profile. (d) Visible images of the two halves of the FPA clearly showing the non-plasmonic and plasmonic sections. The orthogonal pitches of the two-dimensional grating are both fixed at 1.79 μm (p). The metal thickness is about 50 nm. The circular aperture size (d) is fixed at 0.5 p.
