Shenoi, R. V. and Rosenberg, J. and Vandervelde, T. E. and Painter, O. J. and Krishna, S. (2009) Multispectral infrared detection using plasmon-assisted cavities. In: Infrared Technology and Applications XXXV. Proceedings of SPIE. No.7298. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 729808. ISBN 9780819475640. https://resolver.caltech.edu/CaltechAUTHORS:20180530-114424999
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Abstract
We report the demonstration of multi-spectral quantum dots-in-a-well infrared photo-detectors through the coupling of incident light to resonant modes of surface plasmons. The integration of a surface plasmon assisted cavity with the detector results in shifting the peak wavelength of absorption of the detector to that of the resonant wavelength of the cavity. The cavity consists of a square lattice structure with square holes in it. A wavelength tuning of 8.5 to 9 μm was observed, by changing the pitch of the fabricated pattern forming the cavity. Polarization sensitive detectors can be fabricated by breaking the symmetry of the lattice. This is achieved by stretching the lattice constants along the x and y directions. A DWELL detector with resonant frequency at 6.8 μm where the response of the 0 ° polarization is twice as strong as the 90° polarization is reported. This technique, in principle, is detector agnostic and shows promise in fabrication of multi-spectral focal plane arrays (FPA).
Item Type: | Book Section | ||||||
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Additional Information: | © 2009 Society of Photo-Optical Instrumentation Engineers (SPIE). This work was funded by AFOSR. | ||||||
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Subject Keywords: | Quantum Dots, Infrared detector, Dots-in-a-Well Detector, Multi-spectral detection, Plasmons | ||||||
Series Name: | Proceedings of SPIE | ||||||
Issue or Number: | 7298 | ||||||
Record Number: | CaltechAUTHORS:20180530-114424999 | ||||||
Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20180530-114424999 | ||||||
Official Citation: | R. V. Shenoi, J. Rosenberg, T. E Vandervelde, O. J. Painter, S. Krishna, "Multispectral infrared detection using plasmon-assisted cavities," Proc. SPIE 7298, Infrared Technology and Applications XXXV, 729808 (7 May 2009) | ||||||
Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||
ID Code: | 86715 | ||||||
Collection: | CaltechAUTHORS | ||||||
Deposited By: | George Porter | ||||||
Deposited On: | 30 May 2018 23:17 | ||||||
Last Modified: | 09 Mar 2020 13:19 |
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