Ultra-thin enhanced-absorption long-wave infrared detectors

Shao-hua, Wang; Yoon, Narae; Kamboj, Abhilasha; Petluru, Priyanka; Zheng, Wanhua; Wasserman, D.

doi:10.1063/1.5017704

Cited by 24 publications

(6 citation statements)

References 29 publications

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“…With this photo-electric coupling mode, the photocurrent response is enhanced by a factor of 25 one compared to a normal device. In 2018, Wang et al (2018) proposed an ultra-thin class II superlattice detector structure. The thickness of the detector IR absorbing material is 1/50th of the wavelength, and by introducing heavily doped InAs and a surface nano-antenna structure, the incident light at the resonant wavelength is localised in the ultra-thin absorber layer, achieving nearly 50% of the detector absorption.…”

Section: Current Status Of Research In Micro-nano Opticsmentioning

confidence: 99%

The Development and Progression of Micro-Nano Optics

et al. 2022

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Micro-Nano optics is one of the most active frontiers in the current development of optics. It combines the cutting-edge achievements of photonics and nanotechnology, which can realize many brand-new functions on the basis of local electromagnetic interactions and become an indispensable key science and technology of the 21st century. Micro-Nano optics is also an important development direction of the new optoelectronics industry at present. It plays an irreplaceable role in optical communication, optical interconnection, optical storage, sensing imaging, sensing measurement, display, solid-state lighting, biomedicine, security, green energy, and other fields. In this paper, we will summarize the research status of micro-nano optics, and analyze it from four aspects: micro-nano luminescent materials and devices, micro-nano optical waveguide materials and devices, micro-nano photoelectric detection materials and devices, and micro-nano optical structures and devices. Finally, the future development of micro-nano optics will be prospected.

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Section: Current Status Of Research In Micro-nano Opticsmentioning

confidence: 99%

The Development and Progression of Micro-Nano Optics

et al. 2022

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“…The result will be a strong drop in the noise of the device, which makes it possible to enhance the operational temperature of semiconductor detectors. Such advances have already been exploited using metal antennas in QWIPs to push operation to room temperature [17], and has been proposed for T2SL using related approaches [18,148]. Extending this approach to SPhPs seems to us a natural next step.…”

Section: B Semiconductor Detectorsmentioning

confidence: 99%

Perspective: Phonon polaritons for infrared optoelectronics

Gubbin,

De Liberato,

Folland

2021

Preprint

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In recent years there has been significant fundamental research into phonon polaritons, owing to their ability to compress light to extremely small dimensions, low-losses, and ability to support anisotropic propagation. In this perspective, after briefly reviewing the present state of mid-infrared optoelectronics, we will assess the potential of phonon-polariton based nanophotonics for infrared (3-100µm) light sources, detectors and modulators. These will operate in the Reststrahlen region where conventional semiconductor light sources become ineffective. Drawing on the results from the past few years, we will sketch some promising paths to create such devices and we will evaluate their practical advantages and disadvantages when compared to other approaches to infrared optoelectronics.

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“…In the operational bandwidth, nearly perfect absorption efficiency can be achieved on the subwavelength scale for the incident light. It gives metamaterials or plasmonic nanostructures an enormous scope of development in the fields of thermal emission [2], detectors [3], and photovoltaics [4].…”

Section: Introductionmentioning

confidence: 99%

Enhanced ultra-broadband metamaterial absorber enabled by anti-reflection coating

Lei

2023

14th International Photonics and Optoelectronics Meetings (POEM 2022)

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High-performance optical absorbers have garnered great interest because of their wide applications in solar thermophotovoltaic systems, sensors, photo-thermal modulators, etc. In this work, we experimentally realize an omnidirectional ultra-broadband metamaterial absorber with a 90% absorption bandwidth from 440-2124 nm and an average absorption higher than 95%. The peak absorption reaches up to 99.57%. Apart from multiple substructures in the pattern layer, which preliminarily broadens the absorption bandwidth due to the corresponding multiple resonance modes, a silica anti-reflection layer is additionally coated on the top to manipulate the impedance of the nanostructure to match that of the air. Physical mechanism is discussed in detail in the paper. With the assistance of the anti-reflection coating, the proposed nanostructure exhibits an increase of the absorption bandwidth by more than 590 nm while maintains high average absorptance. The anti-reflection layer can be replaced with silicon nitride to broaden the absorption bandwidth further. Nearly angle-independent spectral performance for both TE and TM polarizations are observed in both case. Moreover, for the fabrication, only one electron beam lithography is required to construct the metasurface atoms, eliminating the process of multiple lithography or pattern alignment. The proposed absorber shows a promising prospect in versatile utilizations such as solar energy harvesting, thermal emitters, photodetectors, and so on.

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Ultra-thin enhanced-absorption long-wave infrared detectors

Cited by 24 publications

References 29 publications

The Development and Progression of Micro-Nano Optics

The Development and Progression of Micro-Nano Optics

Perspective: Phonon polaritons for infrared optoelectronics

Enhanced ultra-broadband metamaterial absorber enabled by anti-reflection coating

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