Search Results - "Keo, Sam"

Solid-immersion metalenses for infrared focal plane arrays by Zhang, Shuyan, Soibel, Alexander, Keo, Sam A., Wilson, Daniel, Rafol, Sir. B., Ting, David Z., She, Alan, Gunapala, Sarath D., Capasso, Federico

“…Optical components based on metasurfaces (metalenses) offer an alternative methodology for microlens arrays. In particular, metalens arrays have the potential…”
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Mid-wavelength high operating temperature barrier infrared detector and focal plane array by Ting, David Z., Soibel, Alexander, Khoshakhlagh, Arezou, Rafol, Sir B., Keo, Sam A., Höglund, Linda, Fisher, Anita M., Luong, Edward M., Gunapala, Sarath D.

“…We analyze and compare different aspects of InAs/InAsSb and InAs/GaSb type-II superlattices for infrared detector applications and argue that the former is the…”
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Mid-wavelength infrared InAsSb/InAs nBn detectors and FPAs with very low dark current density by Soibel, Alexander, Ting, David Z., Rafol, Sir B., Fisher, Anita M., Keo, Sam A., Khoshakhlagh, Arezou, Gunapala, Sarath D.

“…There was a significant improvement in the performance of infrared nBn detectors utilizing InAs/InAsSb absorbers culminating in the development of infrared…”
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Mid-wavelength infrared InAsSb/InSb nBn detector with extended cut-off wavelength by Soibel, Alexander, Ting, David Z., Hill, Cory J., Fisher, Anita M., Hoglund, Linda, Keo, Sam. A., Gunapala, Sarath D.

“…We extended the cut-off wavelength λc of bulk InAsSb nBn detectors to λc  = 4.6 μm at T = 200 K by incorporating series of single InSb monolayer into InAsSb…”
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Room temperature performance of mid-wavelength infrared InAsSb nBn detectors by Soibel, Alexander, Hill, Cory J., Keo, Sam A., Hoglund, Linda, Rosenberg, Robert, Kowalczyk, Robert, Khoshakhlagh, Arezou, Fisher, Anita, Ting, David Z.-Y., Gunapala, Sarath D.

“…In this work, we investigate the high temperature performance of mid-wavelength infrared InAsSb-AlAsSb nBn detectors with cut-off wavelengths near 4.5 μm. The…”
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Long wavelength InAs/InAsSb superlattice barrier infrared detectors with p-type absorber quantum efficiency enhancement by Ting, David Z., Soibel, Alexander, Khoshakhlagh, Arezou, Keo, Sam A., Fisher, Anita M., Rafol, Sir B., Höglund, Linda, Hill, Cory J., Pepper, Brian J., Gunapala, Sarath D.

“…We studied long and very long wavelength InAs/InAsSb superlattice barrier infrared detectors that contain p-type absorber layers in order to take advantage of…”
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The effect of p-doping in mid- and long-wavelength InAs/InAsSb superlattice complementary barrier infrared detectors by Ting, David Z., Soibel, Alexander, Khoshakhlagh, Arezou, Keo, Sam A., Fisher, Anita M., Pepper, Brian J., Rafol, Sir B., Hill, Cory J., Gunapala, Sarath D.

“…We compare mid-wavelength InAs/InAsSb superlattice complementary barrier infrared detectors (CBIRDs) with n-type and p-type absorbers and also report results…”
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High operating temperature nBn detector with monolithically integrated microlens by Soibel, Alexander, Keo, Sam A., Fisher, Anita, Hill, Cory J., Luong, Edward, Ting, David Z., Gunapala, Sarath D., Lubyshev, Dmitri, Qiu, Yueming, Fastenau, Joel M., Liu, Amy W. K.

“…We demonstrate an InAsSb nBn detector monolithically integrated with a microlens fabricated on the back side of the detector. The increase in the optical…”
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Long and Very Long Wavelength InAs/InAsSb Superlattice Complementary Barrier Infrared Detectors by Ting, David Z., Khoshakhlagh, Arezou, Soibel, Alexander, Keo, Sam A., Fisher, Anita M., Pepper, Brian J., Höglund, Linda, Rafol, Sir B., Hill, Cory J., Gunapala, Sarath D.

“…While the n -type InAs/InAsSb type-II strained layer superlattice (T2SLS) has demonstrated excellent detector and focal plane array performance in the…”
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InAs/InAsSb Type-II Superlattice Mid-Wavelength Infrared Focal Plane Array With Significantly Higher Operating Temperature Than InSb by Ting, David Z., Rafol, Sir B., Keo, Sam A., Nguyen, Jean, Khoshakhlagh, Arezou, Soibel, Alexander, Hoglund, Linda, Fisher, Anita M., Luong, Edward M., Mumolo, Jason M., Liu, John K., Gunapala, Sarath D.

“…We report focal plane array (FPA) results on a mid-wavelength InAs/InAsSb type-II strained layer superlattice (T2SLS) unipolar barrier infrared detector with a…”
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InAs/InAsSb Type-II Strained-Layer Superlattice Infrared Photodetectors by Ting, David Z., Rafol, Sir B., Khoshakhlagh, Arezou, Soibel, Alexander, Keo, Sam A., Fisher, Anita M., Pepper, Brian J., Hill, Cory J., Gunapala, Sarath D.

“…The InAs/InAsSb (Gallium-free) type-II strained-layer superlattice (T2SLS) has emerged in the last decade as a viable infrared detector material with a…”
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Enhancement of Predictive Bayesian Network Model for Corrosion Alarm of Steel Reinforcement with Uncertainty of NDT Measurements by Keo, Sam Ang, De Larrard, Thomas, Duprat, Frédéric, Geoffroy, Sandrine

“…In this paper, a methodology based on a Bayesian Network (BN) is proposed to create reliable corrosion alarm maps of first layer reinforcements, which is…”
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Type-II Superlattice Mid-Wavelength Infrared Focal Plane Arrays for CubeSat Hyperspectral Imaging by Ting, David Z., Rafol, Sir B., Khoshakhlagh, Arezou, Keo, Sam A., Soibel, Alexander, Fisher, Anita M., Pepper, Brian J., Hill, Cory J., Gunapala, Sarath D., Pagano, Thomas S.

“…InAs/InAsSb type-II strained layer superlattice high-operating temperature barrier infrared detector (HOT-BIRD) focal plane arrays (FPAs) were fabricated for…”
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Proton radiation effect on performance of InAs/GaSb complementary barrier infrared detector by Soibel, Alexander, Rafol, Sir B., Khoshakhlagh, Arezou, Nguyen, Jean, Hoglund, Linda, Fisher, Anita M., Keo, Sam. A., Ting, David Z.-Y., Gunapala, Sarath D.

“…In this work, we investigated the effect of proton irradiation on the performance of long wavelength infrared InAs/GaSb photodiodes (λc = 10.2 μm), based on…”
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Development of InAs/InAsSb Type II Strained-Layer Superlattice Unipolar Barrier Infrared Detectors by Ting, David Z., Soibel, Alexander, Khoshakhlagh, Arezou, Keo, Sam A., Rafol, Sir B., Höglund, Linda, Luong, Edward M., Fisher, Anita M., Hill, Cory J., Gunapala, Sarath D.

“…We recently reported mid-wavelength infrared (MWIR) InAs/InAsSb type II strained-layer superlattice (T2SLS) unipolar barrier detectors and focal-plane arrays…”
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Effect of Acrylate-Cement Grout on the Unconfined Compressive Strength of Silty Sand by Chhun, Kean-Thai, Lee, Su-Hyung, Keo, Sam-Ang, Yune, Chan-Young

“…Chemical grouting has been widely used to ensure the stability and durability of built structures by enhancing the engineering properties of soils. The…”
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640 × 512 Pixels Long-Wavelength Infrared (LWIR) Quantum-Dot Infrared Photodetector (QDIP) Imaging Focal Plane Array by Sarath D. Gunapala, Sarath D. Gunapala, Sumith V. Bandara, Sumith V. Bandara, Cory J. Hill, Cory J. Hill, David Z. Ting, David Z. Ting, John K. Liu, John K. Liu, Sir B. Rafol, Sir B. Rafol, Edward R. Blazejewski, Edward R. Blazejewski, Jason M. Mumolo, Jason M. Mumolo, Sam A. Keo, Sam A. Keo, Sanjay Krishna, Sanjay Krishna, Y.-C. Chang, Y.-C. Chang, Craig A. Shott, Craig A. Shott

“…Epitaxially grown self-assembled InAs-InGaAs-GaAs quantum dots (QDs) are exploited for the development of large-format long-wavelength infrared focal plane…”
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Complementary Barrier Infrared Detector Architecture for Long-Wavelength Infrared InAs/InAsSb Type-II Superlattice by Ting, David Z., Soibel, Alexander, Khoshakhlagh, Arezou, Fisher, Anita M., Pepper, Brian J., Keo, Sam A., Hill, Cory J., Rafol, Sir B., Gunapala, Sarath D.

“…We describe the challenges for long- and very long-wavelength InAs/InAsSb type-II strained-layer superlattice infrared detectors, and provide an overview of…”
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High-Temperature Characteristics of an InAsSb/AlAsSb n+Bn Detector by Ting, David Z., Soibel, Alexander, Höglund, Linda, Hill, Cory J., Keo, Sam A., Fisher, Anita, Gunapala, Sarath D.

“…The high-temperature characteristics of a mid-wavelength infrared (MWIR) detector based on the Maimon-Wicks InAsSb/AlAsSb nBn architecture was analyzed. The…”
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Midinfrared Interband Cascade Laser for Free Space Optical Communication by Soibel, A., Wright, M.W., Farr, W.H., Keo, S.A., Hill, C.J., Yang, R.Q., Liu, H.C.

“…A free space optical (FSO) link utilizing midinfrared (mid-IR) interband cascade lasers has been demonstrated in the 3- to 5-¿m atmospheric transmission window…”
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