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