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. 2020 Jul 15;11(7):686. doi: 10.3390/mi11070686

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Comparison of the theoretical and the computational second harmonic generation efficiencies for $f_{input}$ = 100 THz and d = $1.21 \times 10^{- 21}$ C/V, versus the source wave amplitude.