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Issue 9, 2016
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[A3X][Ga3PS8] (A = K, Rb; X = Cl, Br): promising IR non-linear optical materials exhibiting concurrently strong second-harmonic generation and high laser induced damage thresholds

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Abstract

Mid-far infrared (IR) non-linear optical (NLO) materials are of great importance in military and civil fields. However, commercial IR-NLO crystals (such as AgGaS2, AgGaSe2 and ZnGeP2) do not currently satisfy the requirements of large second-harmonic generation (SHG) and high laser induced damage thresholds (LIDTs), which seriously limits their practical applications. Herein, we have developed a new series of salt-inclusion chalcogenides, [A3X][Ga3PS8] (A = K, Rb; X = Cl, Br), which are constructed from alternate stacking of adamantane-like [Ga3PS10]6− cluster layers and cationic [A3X]2+ salt layers. Importantly, they display both large SHG responses of several-fold and high LIDTs for dozens of times that of commercial AgGaS2, which exhibit the highest LIDTs among the reported IR-NLO materials with a larger SHG conversion efficiency than that of AgGaS2. These properties together with wide transparent region, type I phase-matching features and congruent-melting behaviors indicate they are promising IR-NLO materials.

Graphical abstract: [A3X][Ga3PS8] (A = K, Rb; X = Cl, Br): promising IR non-linear optical materials exhibiting concurrently strong second-harmonic generation and high laser induced damage thresholds

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Publication details

The article was received on 01 May 2016, accepted on 01 Jun 2016 and first published on 01 Jun 2016


Article type: Edge Article
DOI: 10.1039/C6SC01907B
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Chem. Sci., 2016,7, 6273-6277
  • Open access: Creative Commons BY-NC license
    All publication charges for this article have been paid for by the Royal Society of Chemistry

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    [A3X][Ga3PS8] (A = K, Rb; X = Cl, Br): promising IR non-linear optical materials exhibiting concurrently strong second-harmonic generation and high laser induced damage thresholds

    B. Liu, H. Zeng, X. Jiang, G. Wang, S. Li, L. Xu and G. Guo, Chem. Sci., 2016, 7, 6273
    DOI: 10.1039/C6SC01907B

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