Electromagnetically induced transparency-enhanced conversion efficiency of coherent VUV generation in krypton

Summary form only given.Resonant sum-difference frequency mixing has been investigated in krypton. A two-photon resonant field tuned to 212.55 nm drove transitions between the ground state and the excited state. This excited state was coupled 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) at the frequency of the generated VUV field (123.6 nm). The predicted enhancement 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.