title: Local terahertz microspectroscopy with λ/100 spatial resolution.
abstract: We have extended the spectral range of a differential method of infrared microspectroscopy in order to operate in the terahertz spectral region. We show on samples of graphite embedded in a matrix of polymers that the spatial resolution is practically independent of the wavelength and is at least λ/100. This method aims at performing "chemical mapping" of various objects since it is sensitive only to the imaginary part of the index of refraction.
authors: F
authors: F
authors: Glotin
authors: J-M
authors: JM
authors: Ortega
authors: R
authors: R
authors: Prazeres