A plasmonic dipole optical antenna coupled quantum dot infrared photodetector

Mojaverian, Neda; Gu, Guiru; Lu, Xuejun

doi:10.1088/0022-3727/48/47/475102

Cited by 13 publications

(5 citation statements)

References 17 publications

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“…Several similar structures were reported since then, including a plasmonic optical antenna coupled with a LWIR QDIP [218]. The antenna consists of a pair of halfwavelength dipole antennas with a 20 nm gap in between.…”

Section: Optical Antennamentioning

confidence: 95%

Emerging technologies for high performance infrared detectors

2017

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Infrared photodetectors (IRPDs) have become important devices in various applications such as night vision, military missile tracking, medical imaging, industry defect imaging, environmental sensing, and exoplanet exploration. Mature semiconductor technologies such as mercury cadmium telluride and III-V material-based photodetectors have been dominating the industry. However, in the last few decades, significant funding and research has been focused to improve the performance of IRPDs such as lowering the fabrication cost, simplifying the fabrication processes, increasing the production yield, and increasing the operating temperature by making use of advances in nanofabrication and nanotechnology. We will first review the nanomaterial with suitable electronic and mechanical properties, such as two-dimensional material, graphene, transition metal dichalcogenides, and metal oxides. We compare these with more traditional lowdimensional material such as quantum well, quantum dot, quantum dot in well, semiconductor superlattice, nanowires, nanotube, and colloid quantum dot. We will also review the nanostructures used for enhanced lightmatter interaction to boost the IRPD sensitivity. These include nanostructured antireflection coatings, optical antennas, plasmonic, and metamaterials.

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Section: Optical Antennamentioning

confidence: 95%

Emerging technologies for high performance infrared detectors

2017

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“…Since the overall device enhancement depends on the ratio of the area with the SPR enhancement to the overall device area, 6 i.e. the filling factor of the MCDA optical antenna, higher density MCDA optical antennas can lead to a stronger enhancement.…”

Section: Mcda Plasmonic Structure and Simulationmentioning

confidence: 99%

“…[1][2][3] Various optical antennas have been developed, including metallic nanoparticles, 2,4 bowties, 5 dipoles, 6,7 and metallic circular disk arrays (MCDA). 8,9 Light can be coupled to localized surface plasmonic resonance (LSPR) modes in optical antennas.…”

Section: Introductionmentioning

confidence: 99%

Angular-dependent photodetection enhancement by a metallic circular disk optical antenna

Kemsri

Zhang

et al. 2017

AIP Advances

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In this paper, we analyze the plasmonic resonance excited by linearly polarized longwave infrared (LWIR) plane waves in a metallic circular disk optical antenna (MCDA). The surface current distributions are simulated at different wavelengths, incident angles, and polarizations. The excited surface plasmonic resonance waves (SPRs) are different from the Bessel-type of SPR modes and closely resemble those in a monopole antenna. An MCDA coupled LWIR quantum dot infrared photodetector (QDIP) was fabricated and measured at different LWIR plane wave wavelengths and incident angles. A linear correlation between the enhancement ratio and the integrated square of the current is obtained, indicating the monopole antenna effect is a dominating factor for the plasmonic enhancement.

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“…Depending on the optical antenna structures, localized surface plasmonic resonance (LSPR) modes 12, 13 can be excited in optical antennas 1–5, 14–16 , which are referred to as plasmonic optical antennas (POAs). POA enhanced quantum dot infrared photodetectors (QDIPs) have been reported with enhanced photocurrents and directional antenna gains 6, 17, 18 . The analysis of the near-field of POAs and their roles in the plasmonic enhancement have also been reported 6 .…”

Section: Introductionmentioning

confidence: 99%

Analysis of mutual couplings in a concentric circular ring plasmonic optical antenna array

Lin

Zhang

et al. 2017

Sci Rep

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In this paper, we report the analysis of a concentric circular ring plasmonic optical antenna (POA) array using a simple lumped coupled circuit (LCC) model. The currents in the circular rings of the POA array and their mutual couplings are analyzed using the LCC model. The results agree well with the numerical simulation using CST’s Microwave Studio®. The LCC model reveals the mutual couplings between the antenna rings. It is found that the mutual couplings are not only between the adjacent antenna rings, but also involve their second (2nd) nearest or farther neighbors. Since the near-fields of the optical antennas are related to the currents in the optical antennas, the LCC model provides a useful tool for the analysis of the near-field and their mutual interactions in the circular ring POA array.

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A plasmonic dipole optical antenna coupled quantum dot infrared photodetector

Cited by 13 publications

References 17 publications

Emerging technologies for high performance infrared detectors

Emerging technologies for high performance infrared detectors

Angular-dependent photodetection enhancement by a metallic circular disk optical antenna

Analysis of mutual couplings in a concentric circular ring plasmonic optical antenna array

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