Abstract
Four-wave difference-frequency mixing (FWDFM) in Xe has been used as a reliable source of narrow-bandwidth radiation in the vacuum ultraviolet (VUV). Widely tunable radiation with a bandwidth of ≤0.1 cm−1 full-width at half maximum (FWHM) was generated in the 180-nm region. This radiation, ideal for spectroscopic measurements, has been employed in an exhaustive study of the atmospherically significant Schumann–Runge (SR) bands of O2.
© 1997 Optical Society of America
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