Mid-wave Infrared (MWIR) Dielectric Resonator Antenna Coupled Antimonide Detector (DRACAD)
Abstract
The objective of the proposed project is to demonstrate a novel, high operating temperature infrared detection and imaging approach that combines state-of-the-art research in antimonide-based detectors and resonant antenna structures. The proposed technology will measure photons with improved detectivity over conventional detectors by incorporating a low-loss dielectric resonator antenna with a sub-wavelength InAsSb infrared detector. This architecture enables the detector to shrink, reducing its thermal noise. The resonator antenna, however, remains relatively large and enhances the collection of photons with a resonant structure that is impedance matched to the detector at infrared wavelengths. We estimate that dark current limited D* at 225 K will be comparable to recent results from a state-of-the-art large area detector operating at significantly lower temperature (150 K). The estimated results make conservative assumptions about dark current density that may be improved substantially by optimal passivation techniques, thereby enabling increased performance and even higher operating temperatures. The proposed three-year research effort will leverage PI Sanjay KrishnaÕs pioneering work in antimonide-based detectors and plasmonic antenna coupled detectors, and co-PI Anthony GrbicÕs foundational work on metallic and all-dielectric metasurfaces, to devise next-generation, high efficiency antenna coupled detectors based on low-loss, dielectric resonator antennas. The end result will be a verified infrared detection concept that can be further developed in support of the ArmyÕs portfolio of infrared detection technologies for enhanced situational awareness (night vision, obscurant penetration, target recognition, etc.).
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jun 10, 2019
- Source ID
- W911NF1910359
Entities
People
- Sanjay Krishna
Organizations
- Army Contracting Command
- Ohio State University
- United States Army