Abstract
InfraRed (IR) MicroSpectroscopy is a quantitative analytical and non-destructive technique that has undergone a renaissance since its coupling to synchrotron radiation (SR) [1]. The primary advantages of an SR IR source with respect to BlackBody (BB) are a wide broadband spectrum, high brightness/brilliance, intrinsic light polarization, and temporal pulse structure. SR IR spans a larger spectral distribution, also covering the far-IR (or THz region), and can be up to 1000 times brighter in the mid-IR than thermal sources. Fourier Transform IR (FTIR) interferometry has proven extremely effective for performing IR absorption spectroscopy, i.e. for quantifying optically active vibrational modes of molecular components. SR's high brightness benefits FTIR spectromicroscopy with a signal-to-noise ratio unreachable by other broadband sources at diffraction limited spatial resolution at the microscopic scale and in confocal geometry.
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