Frequency modulation Fourier transform spectroscopy
classification
⚛️ physics.optics
keywords
spectroscopyfourierfrequencymodulationtransformabsorptionbroadbandc2h2
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A new method, FM-FTS, combining Frequency Modulation heterodyne laser spectroscopy and Fourier Transform Spectroscopy is presented. It provides simultaneous sensitive measurement of absorption and dispersion profiles with broadband spectral coverage capabilities. Experimental demonstration is made on the overtone spectrum of C2H2 in the 1.5 $\mu$m region.
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