Dispersive Fourier-Transform Spectroscopy

Research | Dispersive Fourier-Transform Spectroscopy

In contrast to traditional spectroscopy in which an optical spectrum is obtained by spatially dispersing light with a prism or diffraction grating onto a detector array, we employ a new type of spectroscopy method known as dispersive Fourier transformation – an optical process that maps the spectrum of an optical pulse into a time-domain waveform using group-velocity dispersion and simultaneously amplifies it in the optical domain. This technique removes spatial diffractive elements and a detector array in the conventional spectrometer and hence enables ultrafast real-time spectroscopic studies of various ultrafast phenomena for a better understanding of them as well as for developing a new class of applications.

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