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Abstract
Three of the headings of Table 1, which have been switched by mistake in our paper, are corrected here. The rest of the paper, including all results and conclusions, remain intact.
© 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
Three of the column headings of Table 1 in our recent publication [1] have been switched by mistake. Headings of the last three columns should be Δℰ/ℰp [%], Qe [pC] and η [%], respectively. The corrections are now introduced in Table 1 below. In the original paper nothing was incorrectly calculated and our conclusions remain the same.
Table 1. Electron acceleration by mJ laser fields. Results from this work and recent studies, and the parameters used, are given. Here, ℰL is the laser pulse energy, P0 = ℰL/τp the paraxial beam power, τp the pulse duration, w0 the waist radius at focus, ℰp the peak electron energy, Δℰ/ℰp the energy spread, Qe the total charge, and η = (Qe/e)(ℰp/ℰL) measures acceleration efficiency.