Multifunction InGaAs detector with on-chip signal processing

Shkedy, Lior; Fraenkel, Rami; Fishman, Tal; Giladi, A.; Bykov, L.; Grimberg, I.; Ilan, E.; Vaserman, Shay; Koifman, A. I.

doi:10.1117/12.2015580

Cited by 10 publications

(3 citation statements)

References 4 publications

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“…Besides the Pelican series ROIC, SCD has developed the Cardinal series ROIC. The first Cardinal series, the Cardinal 640, is 640×512 VGA format with pixel pitch of 15μm, and more than 1000 units have been delivered [30,31]. This is followed by the Cardinal1280 with pixel pitch of 10μm and 1280×1024 SXGA format in 2016.…”

Section: The Cardinal Series Roicmentioning

confidence: 99%

Research progress on digital ROIC of infrared focal plane array detector

Zhao,

Zhang,

Yuan

et al. 2023

Fourteenth International Conference on Information Optics and Photonics (CIOP 2023)

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Section: The Cardinal Series Roicmentioning

confidence: 99%

Research progress on digital ROIC of infrared focal plane array detector

Zhao,

Zhang,

Yuan

et al. 2023

Fourteenth International Conference on Information Optics and Photonics (CIOP 2023)

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“…Finding laser pulses in the image is a difficult task as this laser pulse reflections are slightly above the readout noise. SCD has an established legacy of laser pulse detection [3][4] but thus far, the detection frame rate was limited to a few hundred hertz preventing useful decoding of pulse repetition frequency (PRF).…”

Section: Introductionmentioning

confidence: 99%

SWIFT EI: event-based SWIR sensor for tactical applications

Fraenkel,

Jakobson,

Ben Ari

et al. 2023

Infrared Technology and Applications XLIX

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Event-based imagers are an emerging class of sensors with demonstrated advantages relative to traditional imagers. Event-based vision sensors have a limited number of output bits that are only responsive to image variations, thus overcoming the speed and power constraints of the conventional imagers based on image integration. The SWIFT EI the first event-based InGaAs sensor that is sensitive in the Visible to SWIR band (600–1700nm). The main novelty of this sensor is that the event channel outputs in parallel to a conventional fast imaging channel. Moreover, we can reconfigure the event channel to provide a fast laser pulse detection mode (3rd generation ALPD), which also outputs in parallel to the integrated image. In that context we described in detail the architecture, key features, and preliminary simulations of the ROIC. The SWIFT EI is a low SWaP product optimized for tactical wide distribution applications that incorporates the event based FPA. We will present measurement results of the high frame rate (HFR) imaging channel; the event channel that can reach up to 25 kHz of negative, null, or positive signal, and the laser detection channel providing a single bit detection frame up to 50 kHz. This feature is ideal for multi spot tracking and pulse repetition frequency (PRF).

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“…16,17 Upon SWIR photo-activation, the incoming SWIR light, the writing light (k ¼ 1-1.5 lm) is absorbed in the InGaAs based heterojunction photodetectors that generate and drift to opposite directions electron-hole pairs, where the electrons are drifting towards the positive potential (Anode) and holes are drifted to the negative one (Cathode). This drift is caused within the depletion region located at the interface between the InGaAs and the InP layers.…”

mentioning

confidence: 99%

Infrared to visible image up-conversion using optically addressed spatial light modulator utilizing liquid crystal and InGaAs photodiodes

Solodar

Kumar

Sarusi

et al. 2016

Applied Physics Letters

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Combination of InGaAs/InP heterojunction photodetector with nematic liquid crystal (LC) as the electro-optic modulating material for optically addressed spatial light modulator for short wavelength infra-red (SWIR) to visible light image conversion was designed, fabricated, and tested. The photodetector layer is composed of 640 × 512 photodiodes array based on heterojunction InP/InGaAs having 15 μm pitch on InP substrate and with backside illumination architecture. The photodiodes exhibit extremely low, dark current at room temperature, with optimum photo-response in the SWIR region. The photocurrent generated in the heterojunction, due to the SWIR photons absorption, is drifted to the surface of the InP, thus modulating the electric field distribution which modifies the orientation of the LC molecules. This device can be attractive for SWIR to visible image upconversion, such as for uncooled night vision goggles under low ambient light conditions.

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Multifunction InGaAs detector with on-chip signal processing

Cited by 10 publications

References 4 publications

Research progress on digital ROIC of infrared focal plane array detector

Research progress on digital ROIC of infrared focal plane array detector

SWIFT EI: event-based SWIR sensor for tactical applications

Infrared to visible image up-conversion using optically addressed spatial light modulator utilizing liquid crystal and InGaAs photodiodes

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