Study of the MTF of a MWIR T2SL focal plane array in IDDCA configuration
| Autor: | Eric Costard, Edouard Huard, S. Bernhardt, M. Caes, Sophie Derelle, Riad Haïdar, Linda Höglund, Philippe Christol, Jean Nghiem, Jean-Baptiste Rodriguez, Jérôme Primot, J. Jaeck, I. Ribet-Mohamed |
|---|---|
| Přispěvatelé: | DOTA, ONERA, Université Paris Saclay (COmUE) [Palaiseau], ONERA-Université Paris Saclay (COmUE), Electrum 236 (IRnova AB), Institut d’Electronique et des Systèmes (IES), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Composants à Nanostructure pour le moyen infrarouge (NANOMIR), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), ONERA, Université Paris Saclay (COmUE) [Palaiseau] |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Photodetector
02 engineering and technology Grating 01 natural sciences 010309 optics [SPI]Engineering Sciences [physics] Optics Optical transfer function 0103 physical sciences Talbot effect ComputingMilieux_MISCELLANEOUS Physics [PHYS]Physics [physics] Spatial filter business.industry Detector CSIG FPA MWIR 021001 nanoscience & nanotechnology Condensed Matter Physics IDDCA Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials [SPI.TRON]Engineering Sciences [physics]/Electronics Cardinal point MTF [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic T2SL Spatial frequency 0210 nano-technology business |
| Zdroj: | QSIP2018 QSIP2018, Jun 2018, Stockholm, Sweden. pp.192-198, ⟨10.1016/j.infrared.2018.11.004⟩ Infrared Physics and Technology Infrared Physics and Technology, Elsevier, 2019, 96, pp.192-198. ⟨10.1016/j.infrared.2018.11.004⟩ |
| ISSN: | 1350-4495 |
| DOI: | 10.1016/j.infrared.2018.11.004⟩ |
| Popis: | International audience; Type-II InAs/GaSb superlattice (T2SL) has recently matured into a commercially available technology addressing both MWIR and LWIR spectral domains. As the prerequisites such as Quantum Efficiency (QE) and dark current were met, more advanced figures of merits related to the ElectroOptic (EO) system as a whole can now be studied to position this technology. In this paper, we focus on modulation transfer function (MTF) measurements. Knowing the MTF of a detector is indeed of primary importance for the EO system designers, since spatial filtering affects the system range. We realized MTF measurements on a 320 × 256 MWIR T2SL FPA provided by IRnova, using a Continuously Self Imaging Grating (CSIG). The advantage of this experimental configuration is that no high performance projection optics is required thanks to the self-imaging property (known as Talbot effect) to project a pattern with known spatial frequencies on the photodetector. Besides, the pattern being propagation invariant, alignment is easier and the bench does not require exact knowledge of the focal plane distance to operate, opening measurement in Integrated Detector Dewar Cooler Assembly (IDDCA) configuration. Extracted from measurements, the pixel size is 26 µm for a pitch of 30 µm. |
| Databáze: | OpenAIRE |
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