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High-Performance Enhancement of a GaAs Photodetector Using a Plasmonic Grating
摘要： In this study, we present and establish a gold surface plasmon polariton (SPP) GaAs photodetector that achieves high internal quantum efficiency (IQE). At a wavelength of 600 nm, the IQE with the SPP was 85%, while the IQE without the SPP was 42%, an enhancement of 43%. Also, at a wavelength of 675 nm, the IQE with SPP was 82%, whereas the IQE without SPP was 45%, which constitutes an increase of 37%. Such excellent performance is ascribed to the subwavelength scope of the optical power in the photoconductive-based gold SPP GaAs that provides high IQE. Moreover, the recombination of the SPP in the photodetector provides greater photocurrent and responsivity.
关键词： Surface plasmon polaritons,GaAs photodetector,Plasmonic photodetectors,Light trapping,Plasmonic grating
更新于2025-09-23 15:21:01
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[IEEE 2019 IEEE Research and Applications of Photonics in Defense Conference (RAPID) - Miramar Beach, FL, USA (2019.8.19-2019.8.21)] 2019 IEEE Research and Applications of Photonics in Defense Conference (RAPID) - Enhanced MWIR Led Performance with a Plasmonic Grating
摘要： To improve the efficiency of GaSb-based mid-wave infrared LEDs, we investigated the enhanced spontaneous emission by a dipole in a thin slab numerically. A Purcell factor around 5 was achieved by combining a thin waveguide and plasmonic grating.
关键词： surface plasmonic grating,Purcell effect,LED
更新于2025-09-16 10:30:52