High dynamic solutions for short-wavelength infrared imaging based on InGaAs
| Autor: | N. Lagay, J. P. Truffer, Jean-Luc Reverchon, Jean Decobert, J. A. Robo, Eric Costard, Anis Djedidi, Bogdan Arion, Yang Ni, Pierre Potet, Jean-Louis Gentner, Yiming Zhu, A. Rouvie, Odile Huet |
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| Rok vydání: | 2011 |
| Předmět: |
Infrared
Computer science ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION Photodetector 02 engineering and technology 01 natural sciences Focal Plane Arrays law.invention Gallium arsenide chemistry.chemical_compound Optics law 0103 physical sciences Wide dynamic range 010302 applied physics CMOS sensor Pixel Video Graphics Array business.industry Photoresistor General Engineering 021001 nanoscience & nanotechnology Laser Atomic and Molecular Physics and Optics Photodiode chemistry CMOS Optoelectronics 0210 nano-technology business Indium gallium arsenide Dark current |
| Zdroj: | Optical Engineering |
| ISSN: | 0091-3286 |
| DOI: | 10.1117/1.3585661 |
| Popis: | Short-wavelength infrared image sensors based on p-i-n photodiode arrays present a tremendous interest in applications such as passive and active imagery for laser detection/warning, hot spot or detection for lasers sensors, enhanced vision systems or low light level sensors. The capability to work at room temperature with dark current equivalent to silicon-based devices is another motivation for the fast development of this technology. This paper presents several modules and camera based on InGaAs photodiode arrays from the III-VLab. First, we describe the electro-optics performance in terms of dark signal, sensitivity, and particularly the visible extension capability. We also present a nucless logarithmic sensor based on a 1/2 video graphics array (VGA) format at a pitch of 25 μm initially designed for visible CMOS camera chip. We will also present the next generation of focal plane arrays based on a VGA format of 640×512 pixels with a pitch of 15 μm. This array will be associated to a CTIA readout circuit and also to an innovative CMOS logarithmic wide dynamic range ROIC, developed by New Imaging Technologies. This VGA logarithmic device developed for automotive safety will involve visible extension capability in a European project named 2Wide_sense. |
| Databáze: | OpenAIRE |
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