具有高功率耐久性的单斜二维 KNbO3 中的三次谐波生成

Fei Zhou, Yang Li, Haizeng Song, Xianhua Wei, Bo Dai
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引用次数: 0

摘要

二维(2D)KNbO3 是由二维 KNbO2 在 530 ℃ 的空气中通过拓扑转变制备而成的,它具有沿 [101¯]pc 区轴的单一自发极化(Ps)方向。强烈的 Ps 各向异性导致激光垂直入射到样品上时,二维 KNbO3 产生的二次谐波可以忽略不计。然而,却观察到了强烈的三次谐波产生。通过与石墨烯的χeff(3)进行比较,可以估算出二维 KNbO3 的有效三阶电感量为∼10-19 m2 V-2。二维 KNbO3 强大的功率耐受性使其在应用高功率三次谐波生成二维器件方面具有巨大潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Third harmonic generation in monoclinic 2D KNbO3 with high power endurance
Two-dimensional (2D) KNbO3 is prepared by topotactic transition from 2D KNbO2 at 530 °C in air, which has a single spontaneous polarization (Ps) direction along the [101¯]pc zone axis. The strong Ps anisotropy leads to a negligible second harmonic generation of 2D KNbO3 with laser vertically incident on the sample. However, a strong third harmonic generation is observed. The effective third-order susceptibility of 2D KNbO3 with the order of ∼10−19 m2 V−2 is estimated by comparing it with the χeff(3) of graphene. The robust power tolerance of 2D KNbO3 endows it great potential in the application of high-power third harmonic generation 2D devices.
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