Abstract
We present a theory of third harmonic generation with XUV radiation through a double resonance, and examine the possibilities of enhancing the conversion efficiency by an additional laser field. We apply the theory to He where a photon of 21.22 eV leads to a one-photon resonance with the bound state , and a three-photon resonance with the autoionizing state .
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More From: Journal of Physics B: Atomic, Molecular and Optical Physics
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