Hamamatsu’s compact MEMS-FPI spectrum sensors are suitable for portable NIR spectrometers used to identify materials. For example, as shown in this video, a MEMS-FPI sensor was integrated into a handheld device to identify textile materials based on their NIR reflection spectra.
To measure an NIR spectrum, MEMS-FPI spectrum sensors utilize a built-in MEMS Fabry-Perot interferometer and InGaAs PIN photodiode. They are sensitive to near-infrared wavelengths within 1350-2150 nm, and several models, with different wavelength sensitivity ranges, are available.
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