Plasmonic nanoslit array enhanced metal-semiconductor-metal optical detectors
Eryilmaz, S. B.
Okyay, Ali Kemal
IEEE Photonics Technology Letters
Institute of Electrical and Electronics Engineers
548 - 550
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Metallic nanoslit arrays integrated on germanium metal-semiconductor-metal photodetectors show many folds of absorption enhancement for transverse-magnetic polarization in the telecommunication C-band. Such high enhancement is attributed to resonant interference of surface plasmon modes at the metal-semiconductor interface. Horizontal surface plasmon modes were reported earlier to inhibit photodetector performance. We computationally show, however, that horizontal modes enhance the efficiency of surface devices despite reducing transmitted light in the far field.
Metal semiconductor interface
Metal semiconductor metal
Metal semiconductor metal photodetector
Metallic nanoslit arrays
Surface plasmon modes
Published Version (Please cite this version)http://dx.doi.org/10.1109/LPT.2012.2183342
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