Abstract
We have demonstrated enhanced nondegenerate four-wave mixing by use of a resonant probe in a double- system consisting of an optically dense spectral hole–burning solid. The observed probe diffraction efficiency is in amplitude at 6 K, which is higher than for an off-resonant probe in a -type scheme. We have also observed two-photon coherence line narrowing, which has potential application to high-resolution spectroscopy.
© 1999 Optical Society of America
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