Resonator-quantum well infrared photodetectors

We applied a recent electromagnetic model to design the resonator-quantum well infrared photodetector (R-QWIP). In this design, we used an array of rings as diffractive elements to diffract normal incident light into parallel propagation and used the pixel volume as a resonator to intensify the diff...

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Bibliographic Details
Published in:Applied physics letters 2013-11, Vol.103 (20)
Main Authors: Choi, K. K., Jhabvala, M. D., Sun, J., Jhabvala, C. A., Waczynski, A., Olver, K.
Format: Article
Language:English
Subjects:
Applied physics
Arrays
DESIGN
Diffraction
Incident light
Infrared
INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
Light diffraction
NANOSCIENCE AND NANOTECHNOLOGY
PHOTODETECTORS
Photometers
Pixels
QUANTUM EFFICIENCY
Quantum well infrared photodetectors
QUANTUM WELLS
RESONATORS
Sensors
Wavelengths
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Summary:We applied a recent electromagnetic model to design the resonator-quantum well infrared photodetector (R-QWIP). In this design, we used an array of rings as diffractive elements to diffract normal incident light into parallel propagation and used the pixel volume as a resonator to intensify the diffracted light. With a proper pixel size, the detector resonates at certain optical wavelengths and thus yields a high quantum efficiency (QE). To test this detector concept, we fabricated a number of R-QWIPs with different quantum well materials and detector geometries. The experimental result agrees satisfactorily with the prediction, and the highest QE achieved is 71%.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4831797