Dr. Lidia Langof Profile

Dr. Lidia Langof

Product Development at SCD Semiconductor Devices

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Publications (11)

Proceedings Article | 13 June 2023 Presentation + Paper

SWIFT EI: event-based SWIR sensor for tactical applications

R. Fraenkel, C. Jakobson, N. Ben Ari, R. Dobromislin, N. Shiloah, M. Goldfarb, L. Langof, O. Ofer, R. Elishkov, E. Shunem, M. Labilov, M. Alcheck, E. Almog, M. Nitzani, Y. Karni, T. Markovitz, O. Dicker, B. Milgrom

Proceedings Volume 12534, 1253405 (2023) https://doi.org/10.1117/12.2663026

KEYWORDS: Sensors, Short wave infrared radiation, Readout integrated circuits, Pulsed laser operation, Video, Quantum channels, Video processing, Staring arrays, Pulse signals

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Proceedings Article | 27 May 2022 Presentation + Paper

Event-based SWIR sensor

Claudio Jakobson, Rami Fraenkel, Nimrod Ben Ari, Roman Dobromislin, Niv Shiloah, Tomer Argov, Willie Freiman, Gal Zohar, Lidia Langof, Oren Ofer, Rahel Elishkov, Edan Shunem, Michael Labilov, Menashe Alcheck, Yiftah Kalfa, Michal Nitzani, Yoram Karni, Itay Shtrichman, Tuvy Markovitz

Proceedings Volume 12107, 1210704 (2022) https://doi.org/10.1117/12.2618290

KEYWORDS: Readout integrated circuits, Sensors, Short wave infrared radiation, Imaging systems, Pulsed laser operation, Machine vision, Indium gallium arsenide

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Proceedings Article | 27 May 2022 Presentation + Paper

HOT MWIR technology at SCD

Philip Klipstein, Eran Armon, Eran Avnon, Yael Benny, Maya Brumer, Yossi Cohen, Nethanel Fraenkel, Sivan Gliksman, Alex Glozman, Noam Hadari, Itay Hirsch, Moti Katz, Olga Klin, Lidia Langof, Inna Lukomsky, Illia Marderfeld, Hadar Nahor, Michal Nitzani, David Rakhmilevich, Shai Schusterman, Ilana Shafir, Itay Shtrichman, Lior Shkedy, Noam Sicron, Noam Snapi, Nehemia Yaron

Proceedings Volume 12107, 121070Q (2022) https://doi.org/10.1117/12.2615622

KEYWORDS: Quantum efficiency, Sensors, Mid-IR, Staring arrays, Doping, Single crystal X-ray diffraction, Photodiodes, Image quality, Gallium antimonide, Temperature metrology

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Proceedings Article | 12 April 2021 Presentation + Paper

Type II superlattice detectors at SCD

P. Klipstein, Y. Benny, Y. Cohen, N. Fraenkel, R. Fraenkel, S. Gliksman, A. Glozman, I. Hirsch, O. Klin, L. Langof, I. Lukomsky, I. Marderfeld, B. Milgrom, H. Nahor, M. Nitzani, D. Rakhmilevich, L. Shkedy, N. Snapi, I. Shtrichman, E. Weiss, N. Yaron

Proceedings Volume 11741, 117410N (2021) https://doi.org/10.1117/12.2584601

KEYWORDS: Superlattices, Sensors, Single crystal X-ray diffraction, Quantum efficiency, Staring arrays, Mid-IR, Long wavelength infrared, Diffusion, Structural engineering, Photodiodes

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The InAs/InSb/GaSb/AlSb family of III-V alloys and superlattice materials offer unique possibilities for band structure engineering, because they can be grown on GaSb or InSb substrates with high quality and satisfactory control of strain, doping and composition. The band profiles and oscillator strengths are also quite predictable, enabling full simulation of detector performance from a basic knowledge of layer and stack thicknesses. In conventional III-V p-n devices, Shockley-Read-Hall (SRH) traps generate a significant flow of thermal carriers in the device depletion region. At SCD, we have overcome this problem by developing XBn and XBp barrier device architectures that suppress these depletion currents, leading to higher operating temperatures or lower dark currents. Our first barrier detector product was launched in 2013 and operates at 150K. It uses a mid-wave infrared (MWIR) XBn device with an InAsSb absorber well matched to the most transparent of the atmospheric windows, at wavelengths between 3 and 4.2μm. However to span the full MWIR and to sense the long-wave infrared (LWIR) spectrum, we have investigated InAs/GaSb type II superlattices (T2SLs), because they offer full tunability. In this work we show that minority carriers in n-type T2SLs are localized and diffuse by variable range hopping, even when the period is short and the valence miniband has a width of 30-40 meV. Unfortunately, this leads to sub-micron diffusion lengths and a low quantum efficiency (QE) of ~20% in a full MWIR XBn device. On the other hand, p-type layers exhibit “metallic” minority carrier transport with much longer diffusion lengths, typically ~7 μm in our LWIR device layers. The successful development of p-type devices has led to our second barrier detector product, which uses an XBp LWIR T2SL and operates at 77K with a cut-off wavelength of 9.5 μm, a focal plane array (FPA) QE of ~50% and background limited performance up to ~90K at F/3. Moreover, the FPA operability is typically above 99.5%, based on stringent production-line criteria. Together with high spatial uniformity and good temporal stability, these barrier detectors are already a realistic alternative to MCT photodiode arrays, and further products operating at other wavelengths will be launched in due course.

Proceedings Article | 12 April 2021 Presentation + Paper

Performance of low noise InGaAs detector

O. Ofer, R. Elishkova, R. Friedman, I. Hirsh, L. Langof, M. Nitzani, Y. Reem, C. Jakobson, I. Pivnik, E. Louzon, R. Fraenkel, B. Milgrom, I. Shtrichman

Proceedings Volume 11741, 1174108 (2021) https://doi.org/10.1117/12.2585674

KEYWORDS: Sensors, Indium gallium arsenide, Staring arrays, Short wave infrared radiation, High dynamic range imaging, Video, Readout integrated circuits, Infrared radiation, Infrared imaging, Imaging systems

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Proceedings Article | 20 May 2016 Paper

Type II superlattice technology for LWIR detectors

P. Klipstein, E. Avnon, D. Azulai, Y. Benny, R. Fraenkel, A. Glozman, E. Hojman, O. Klin, L. Krasovitsky, L. Langof, I. Lukomsky, M. Nitzani, I. Shtrichman, N. Rappaport, N. Snapi, E. Weiss, A. Tuito

Proceedings Volume 9819, 98190T (2016) https://doi.org/10.1117/12.2222776

KEYWORDS: Sensors, Staring arrays, Long wavelength infrared, Superlattices, Single crystal X-ray diffraction, Quantum efficiency, Readout integrated circuits, Gallium antimonide, Polishing, Diffusion

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Proceedings Article | 4 June 2015 Paper

Type-II superlattice detector for long-wave infrared imaging

P. Klipstein, E. Avnon, Y. Benny, A. Fraenkel, A. Glozman, E. Hojman, E. Ilan, E. Kahanov, O. Klin, L. Langof, Y. Livneh, I. Lukomsky, M. Nitzani, L. Shkedy, I. Shtrichman, N. Snapi, R. Talmor, A. Tuito, S. Vaserman, E. Weiss

Proceedings Volume 9451, 94510K (2015) https://doi.org/10.1117/12.2175848

KEYWORDS: Sensors, Staring arrays, Quantum efficiency, Long wavelength infrared, Superlattices, Readout integrated circuits, Mid-IR, Single crystal X-ray diffraction, Diffusion, Diodes

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Proceedings Article | 24 June 2014 Paper

InAs/GaSb Type II superlattice barrier devices with a low dark current and a high-quantum efficiency

P. Klipstein, E. Avnon, Y. Benny, R. Fraenkel, A. Glozman, S. Grossman, O. Klin, L. Langoff, Y. Livneh, I. Lukomsky, M. Nitzani, L. Shkedy, I. Shtrichman, N. Snapi, A. Tuito, E. Weiss

Proceedings Volume 9070, 90700U (2014) https://doi.org/10.1117/12.2049825

KEYWORDS: Quantum efficiency, Diffusion, Sensors, Superlattices, Long wavelength infrared, Staring arrays, Mid-IR, Absorption, Indium arsenide, Diodes

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Proceedings Article | 31 May 2012 Paper

SCD's cooled and uncooled photo detectors for NIR SWIR

Rami Fraenkel, Daniel Aronov, Yael Benny, Eyal Berkowicz, Leonid Bykov, Zipi Calahorra, Tal Fishman, Avihoo Giladi, Elad Ilan, Philip Klipstein, Lidia Langof, Inna Lukomsky, David Mistele, Udi Mizrahi, Dan Nussinson, Avi Twitto, Michael Yassen, Ami Zemel

Proceedings Volume 8353, 835305 (2012) https://doi.org/10.1117/12.918098

KEYWORDS: Sensors, Short wave infrared radiation, Indium gallium arsenide, Staring arrays, Quantum efficiency, Diffusion, Absorption, Single crystal X-ray diffraction, Readout integrated circuits, Gallium antimonide

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Proceedings Article | 21 May 2011 Paper

Advanced multi-function infrared detector with on-chip processing

Lidia Langof, Dan Nussinson, Elad Ilan, Shimon Elkind, Roman Dobromislin, Itzik Nevo, Fanny Khinich, Michael Labilov, Zipora Calahorra, Shay Vaserman, Tuvy Markovitz, Ofer Manela, David Elooz, Avi Tuito, Dov Oster

Proceedings Volume 8012, 80120F (2011) https://doi.org/10.1117/12.883248

KEYWORDS: Sensors, Pulsed laser operation, Laser range finders, Thermography, Mid-IR, Short wave infrared radiation, Readout integrated circuits, Capacitors, Infrared imaging, Signal detection

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Proceedings Article | 5 October 1999 Paper

Atmospheric PSF caused by light scattering: comparison of a Monte Carlo model to experimental results

Tal Carmon, Lidia Langof, Uri Oppenheim, Adam Devir

Proceedings Volume 3763, (1999) https://doi.org/10.1117/12.363614

KEYWORDS: Scattering, Aerosols, Point spread functions, Atmospheric particles, Atmospheric modeling, Light scattering, Monte Carlo methods, Electro optical modeling, Laser scattering, Rayleigh scattering

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Showing 5 of 11 publications

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