Infrared Digital Focal Plane Arrays for Earth Remote Sensing Instruments

Gunapala, Sarath D.; Rafol, Sir B.; Ting, David Z.; Soibel, Alexander; Khoshakhlagh, Arezou; Keo, Sam A.; Pepper, Brian; Fisher, Anita M.; Hill, Cory J.; Luong, Edward M.; Choi, K. K.; D'Souza, Arvind I.; Masterjohn, Christopher; Babu, Sachidananda; Ghuman, Parminder

doi:10.3390/proceedings2019027054

Cited by 3 publications

(2 citation statements)

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“…[ 21–23,190,240–243 ] For the FPA detectors, it is a crucial requirement to not only reduce the cooling power by enabling the noncryogenic operation but also to achieve good operability, uniformity, stability, reproducibility, and scalability via fabricating large format and small pitch FPAs. In recent years, developments of Ga‐based InAs/Ga(In)Sb and Ga‐free InAs/InAsSb T2SL have been carried out by several groups targeted at MWIR [ 57,226,244–247 ] and LWIR [ 247–249 ] FPAs. Figure a summarizes the quantum efficiency of current state‐of‐the‐art detector technologies including MCT, QWIP, nBn , and T2SL FPAs in the MWIR regime.…”

Section: Recent Advances In Ir Detection Technologiesmentioning

confidence: 99%

Emerging Type‐II Superlattices of InAs/InAsSb and InAs/GaSb for Mid‐Wavelength Infrared Photodetectors

Alshahrani

Kesaria

Anyebe

et al. 2021

Advanced Photonics Research

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Mid‐wavelength infrared (MWIR) photodetectors (PDs) are highly essential for environmental sensing of hazardous gases, security, defense, and medical applications. Mercury cadmium telluride (MCT) materials have been the most used detector in the MWIR range. However, it is plagued by several challenges including toxicity concerns, a high rate of Auger nonradiative recombination, a large band‐to‐band (BTB) tunneling current, nonuniformity, and the need for cryogenic cooling. Theoretically, it is predicted that type‐II superlattice (T2SL) materials can emerge as an alternative with the potential to outperform the current state‐of‐the‐art MCT PDs due to suppression of Auger recombination associated with bandgap engineering and reduced BTB tunneling current caused by the larger effective mass. Based on this theoretical prediction, it is believed that T2SL have the potential to operate at high temperatures and overcome the size, weight, and power consumption limitations of MCT. Herein, a detailed review of the fundamental material properties of T2SL PDs is provided while providing a comparison of the optical and electrical performances of Ga‐free (InAs/InAsSb) and Ga‐based (InAs/GaSb) T2SL PDs. Finally, recent advances in IR detection technologies including focal plane arrays and quantum cascade infrared photodetectors are explored.

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Section: Recent Advances In Ir Detection Technologiesmentioning

confidence: 99%

Emerging Type‐II Superlattices of InAs/InAsSb and InAs/GaSb for Mid‐Wavelength Infrared Photodetectors

Alshahrani

Kesaria

Anyebe

et al. 2021

Advanced Photonics Research

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“…Infrared technology is still widely used in everyday life, for example in television remotes. Another example being developed is long-wavelength digital infrared for remote sensing earth applications [6]. The wide use of infrared can be developed for future technological needs.…”

Section: Introductionmentioning

confidence: 99%

Development of Student Worksheet for Infrared Technology Material Using Project Based Learning and Science Technology Engineering Mathematics Learning Model

Melania¹,

Pantjawati²,

Mulyanti³

2021

Proceedings of the 6th UPI International Conference on TVET 2020 (TVET 2020)

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The rapid advancement of technology demands the ability of students to apply knowledge in solving problems that occur in society. This paper proposes the development of student worksheets for Infrared Technology material using the PjBL-STEM learning model. This study aims to determine the feasibility level of the student worksheets and students' responses after using that. This study involved two teachers and 43 students from 2 Vocational High School who were taking Electronic Circuit Application subjects. The level of feasibility was seen from the teacher's assessment, while the students' responses were seen from the questionnaire. The feasibility assessment instrument and student response questionnaire were prepared based on the Teaching Material Assessment Standards by the National Education Standards Agency (BSNP). This research was conducted using the ADDIE approach. Based on the teacher assessment, the feasibility level of the PjBL-STEM-based worksheets was categorized as very good or very feasible (91%). Meanwhile, from the students' responses, the score was 87.61% in the very good or very satisfied category. The conclusion from this research is that the PjBL-STEM-based student worksheets are very suitable to be used as teaching materials for Infrared Technology material in the subject of Electronic Circuit Application.

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InAsSb-Based Infrared Photodetectors: Thirty Years Later On

Rogalski

Martyniuk

Kopytko

et al. 2020

Sensors

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In 1989, one author of this paper (A.R.) published the very first review paper on InAsSb infrared detectors. During the last thirty years, many scientific breakthroughs and technological advances for InAsSb-based photodetectors have been made. Progress in advanced epitaxial methods contributed considerably to the InAsSb improvement. Current efforts are directed towards the photodetector’s cut-off wavelength extension beyond lattice-available and lattice-strained binary substrates. It is suspected that further improvement of metamorphic buffers for epitaxial layers will lead to lower-cost InAsSb-based focal plane arrays on large-area alternative substrates like GaAs and silicon. Most photodetector reports in the last decade are devoted to the heterostructure and barrier architectures operating in high operating temperature conditions. In the paper, at first InAsSb growth methods are briefly described. Next, the fundamental material properties are reviewed, stressing electrical and optical aspects limiting the photodetector performance. The last part of the paper highlights new ideas in design of InAsSb-based bulk and superlattice infrared detectors and focal plane arrays. Their performance is compared with the state-of-the-art infrared detector technologies.

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Infrared Digital Focal Plane Arrays for Earth Remote Sensing Instruments

Abstract: In this presentation, we will discuss the advantages of using an in-pixel digital read out integrated circuit and type-II strained layer superlattice detector array technology to elevate the operating temperature of the focal plane array for Earth remote sensing instruments.

Cited by 3 publications

References 1 publication

Emerging Type‐II Superlattices of InAs/InAsSb and InAs/GaSb for Mid‐Wavelength Infrared Photodetectors

Emerging Type‐II Superlattices of InAs/InAsSb and InAs/GaSb for Mid‐Wavelength Infrared Photodetectors

Development of Student Worksheet for Infrared Technology Material Using Project Based Learning and Science Technology Engineering Mathematics Learning Model

InAsSb-Based Infrared Photodetectors: Thirty Years Later On

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