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High-responsivity plasmonics-based GaAs metal-semiconductor-metal photodetectors

Karar, Ayman; Das, Narottam; Leong Tan, Chee; Alameh, Kamal; Tak Lee, Yong; Karouta, Fouad


We report the experimental characterization of high-responsivity plasmonics-based GaAsmetal-semiconductor-metalphotodetector (MSM-PD) employing metal nano-gratings. Both the geometry and light absorption near the designed wavelength are theoretically and experimentally investigated. The measured photocurrent enhancement is 4-times in comparison with a conventional single-slit MSM-PD. We observe reduction in the responsivity as the bias voltage increases and the input light polarization varies....[Show more]

CollectionsANU Research Publications
Date published: 2011-09-28
Type: Journal article
Source: Applied Physics Letters
DOI: 10.1063/1.3625937


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