A monolithically integrated plasmonic infrared quantum dot camera

Sang Jun Lee, Zahyun Ku, Ajit Barve, John Montoya, Woo-Yong Jang, S.R.J. Brueck, Mani Sundaram, Axel Reisinger, Sanjay Krishna () and Sam Kyu Noh ()
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Sang Jun Lee: Korea Research Institute of Standards and Science
Zahyun Ku: Center for High Technology Materials, University of New Mexico
Ajit Barve: Center for High Technology Materials, University of New Mexico
John Montoya: Center for High Technology Materials, University of New Mexico
Woo-Yong Jang: Center for High Technology Materials, University of New Mexico
S.R.J. Brueck: Center for High Technology Materials, University of New Mexico
Mani Sundaram: QmagiQ, LLC, 22 Cotton Road, Unit H, Suite 180, Nashua, New Hampshire 03063, USA.
Axel Reisinger: QmagiQ, LLC, 22 Cotton Road, Unit H, Suite 180, Nashua, New Hampshire 03063, USA.
Sanjay Krishna: Center for High Technology Materials, University of New Mexico
Sam Kyu Noh: Korea Research Institute of Standards and Science

Nature Communications, 2011, vol. 2, issue 1, 1-6

Abstract: Abstract In the past few years, there has been increasing interest in surface plasmon-polaritons, as a result of the strong near-field enhancement of the electric fields at a metal–dielectric interface. Here we show the first demonstration of a monolithically integrated plasmonic focal plane array (FPA) in the mid-infrared region, using a metal with a two-dimensional hole array on top of an intersubband quantum-dots-in-a-well (DWELL) heterostructure FPA coupled to a read-out integrated circuit. Excellent infrared imagery was obtained with over a 160% increase in the ratio of the signal voltage (Vs) to the noise voltage (Vn) of the DWELL camera at the resonant wavelength of λ=6.1 μm. This demonstration paves the way for the development of a new generation of pixel-level spectropolarimetric imagers, which will enable bio-inspired (for example, colour vision) infrared sensors with enhanced detectivity (D*) or higher operating temperatures.

Date: 2011
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DOI: 10.1038/ncomms1283

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