Proceedings PaperComputerized Direct Real Time Infrared Detection As Applied To Five Different Temporally And Spectrally Varying Experiments
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Fourier Transform infrared spectroscopy using high quality cryogenic detectors offers the capability of producing very high signal to noise spectra with very short (approx. 30 ms) measurement times. This capability has been combined with the inherent wavelength accuracy and stability of these instruments to provide very high sensitivity achieved by long term signal averaging. Much of the commercial success of FT-IR can be attributed to this sensitivity and the resultant ability to detect and quantitate very small amounts of trace materials in a mixture using interactive absorbance subtraction techniques. More recently, however, the speed of FT-IR has been increasingly applied in commercial applications requiring time dependent spectral measurements. The time resolution required can vary from a few nanoseconds as in the case of time resolved spectroscopy to a few minutes for toxic gas analysis. Dedication of modern minicomputer technology to FT-IR applications has made most of these experiments possible.