Abstract
Resonant sum-difference frequency mixing has been investigated in krypton (Fig. 1). A two-photon resonant field tuned to 212.55 nm drove transitions between the 4p6 1S|1) ground state and the 4p55p [0, 1/2] |2) excited state. This excited state was coupled to the 4p55s [1,1/2] |3〉 state by a near-resonant field at 759 nm. The infrared coupling field was near transform limited and under these conditions should result in electromagnetically induced transparency (EIT)1,2 at the frequency of the generated vacuum ultraviolet (VUV) field (123.6 nm). The predicted enhancement1 in the conversion efficiency of the scheme was investigated by studying the dependence of the VUV signal on intensity and detuning of the coupling field.
© 1998 Optical Society of America
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