Fourier-transform spectroscopy offers high resolution, wavelength accuracy and broad tunability, but is so far limited to the mid-ultraviolet range, down to wavelengths of 140 nm. Now, based on a wavefront-division scanning interferometer, researchers present a Fourier-transform spectroscopy scheme that covers a broad wavelength range of 40–250 nm with 7% tunability and an extrinsic absolute wavelength accuracy of 10−7.
- Nelson de Oliveira
- Mourad Roudjane
- Laurent Nahon
