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Raptor Photonics Limited is a global leader and manufacturer of high-performance, industrial-grade and extremely rugged ultra low light digital and analog cameras. Raptor specializes in complete cameras and core engine solutions using EMCCD, CCD and SWIR sensor technology. The extreme low light capability of Raptor’s cameras makes them ideal for day/night surveillance, homeland security, aerospace, industrial and scientific markets. Raptor Photonics Limited is a registered ISO 9001:2015 company and is headquartered in Larne, Northern Ireland.

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High Performance SWIR Imaging Cameras

POSTED 08/24/2021

High Performance SWIR Imaging Cameras
Raptor Photonics
Geoff Martin

Silicon  based  area  detectors  (e.g.  CCDs  or  CMOS) are   widely   used   in   high-performance   imaging applications, detecting wavelengths from soft x-ray through to near-infrared (NIR). Typically, the quantum efficiency (QE) of these detectors decreases rapidly as the detection wavelength increases further into the NIR region. Above 1100nm, Silicon is transparent and therefore cannot be used to directly detect photons of these wavelengths, however many other materials do  have  photon  sensitivity  at  wavelengths  of  1μm and longer. The definition for each ‘sub-region’ within VIS-IR wavelength range is outlined in Figure 1, along with  some  commonly  used  detector  materials  and their typical detection ranges. Each of the materials highlighted below present their own advantages and challenges and therefore prior to detector 
selection, the  user  must  consider  all  aspects  of  the  intended application, in addition to the wavelength response.

See the rest of the paper here: https://www.raptorphotonics.com/wp-content/uploads/2018/01/Ninox-White-Paper-July-2020.pdf