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Opt Lett. 1982 Dec 01;7(12):575-6. doi: 10.1364/ol.7.000575.

Optical metal-oxide tunnel detectors with microstructured electrodes.

Optics letters

A M Glass, P F Liao, D H Olson, L M Humphrey

PMID: 19714096 DOI: 10.1364/ol.7.000575

Abstract

Order-of-magnitude improvement of the quantum efficiency of metal-oxide-metal detectors is achieved in the visible spectrum by fabricating the devices on silica substrates structured with a periodic array of bumps separated by about 0.25 microm. Structuring metallic films affords improved coupling of the detector to visible light by excitation of localized plasma resonances and surface-plasmon polariton modes. Voltage responsivities of 5 mV/W into a 50-Omega impedance has been demonstrated in preliminary devices. In suitable geometries, such detectors have the potential of subpicosecond response times.

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