The Near and Short-Wave Infrared (NIR and SWIR) wavelength bands have long been important for scientific investigations and applications. Light in this region scatters less than visible wavelengths, permitting deeper penetration in obscurants, materials, or tissues. Light rays are also selectively absorbed when their wavelengths match the energy of the molecules they hit. This absorption creates unique spectral signatures in reflected or transmitted light. These signatures (or spectra) help to identify chemistries, or even to measure particle sizes by determining scattering behaviors. These capabilities enable in-vivo mapping of internal structures in tissues such as the eye, skin, or teeth. Astronomers image in the SWIR for both reasons, peering through cosmic dust, atmospheric turbulence, and to determine planet chemistries. Even art historians and restorers use SWIR images to study the masters’ methods and to authenticate art works by peering through surface layers and identifying the chemistry of the artists’ paint.
High performance image sensors, with low Size, Weight, and Power + cost (low SWaP-C), best serve scientists, researchers, and bio-medical clinicians. The SciCam1280 from Princeton Infrared Technologies (PIRT) is a research grade imaging tool with the on-board cooling capability to image the weakest light levels, but also with wide image dynamic range and great linearity over that range. It works great mounted on a spectrometer for cutting-edge spectroscopy research. The PIRT MVCam is a compact camera for use in tight quarters while also delivers fast frame rates, dynamic range, and linearity. Single-point spectrometers use the wide programmable gain range of the PIRT linear array or its sister linescan camera for capturing weak emission or strong absorbance spectra. These sensors provide the intensity resolution you need, whether at slow or fast acquisition rates.