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arXiv · 1309.1384

Enhanced Harmonic Generation from M=1 aligned Ar+

A. C. Brown·Hugo W. van der Hart
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Abstract

We investigate harmonic generation (HG) from ground-state Ar+ aligned with M=1 at a laser wavelength of 390-nm and intensity of 4x10(14) Wcm-2. Using time-dependent R-matrix theory, we find that an initial state with magnetic quantum number M=1 provides a 4-fold increase in harmonic yield over M=0. HG arises primarily from channels associated with the (3)Pe threshold of Ar2+, in contrast with M=0 for which channels associated with the excited, (1)De threshold dominate HG. Multichannel and multielectron interferences lead to a more marked suppression of HG for M=1 than M=0.

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A. C. Brown, Hugo W. van der Hart. 2013-09-05. Enhanced Harmonic Generation from M=1 aligned Ar+. https://doi.org/10.1103/physreva.88.033419

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