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A method of modifying the spectral width of extreme ultraviolet light (EUV) has been developed by researchers at the Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy. The scientists used a novel phase-matching scheme in four-wave mixing, which allowed them to compress the spectral width of the initial broadband light by more than a hundred times.
The researchers specifically combined broadband white light in the visible portion of the spectrum with light exhibiting a broad spectrum in the vacuum ultraviolet (VUV) region. The light was then passed through a dense jet of krypton atoms, creating a new laser pulse in the EUV range. The spectral width of the new pulse was more than a hundred times narrower when…READ MORE