The MD-SHG spectrum is obtained without tilting the sample ( = 0°) in a magnetic field of 0 H = +50 mT along the [010] axis at T = 12 K in the canted AFM phase. The ED-SHG spectrum is measured...

2021年9月22日 · Here, we demonstrate the significant enhancement of SHG and THG in a transition-metal-dichalcogenide (TMDC) MoS 2 metasurface in the sub-diffractive, single-beam nonlinear emission in the visible...

2021年4月16日 · We show that a giant nonreciprocal optical response can occur when transferring from linear to nonlinear optics, specifically second harmonic generation (SHG). CuB 2 O 4 exhibits SHG transmission changes by almost …

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2023年9月28日 · Here we report the experimental demonstration of optical second-harmonic generation (SHG) in a magnetic Weyl semimetal Co 3 Sn 2 S 2 from the electric quadrupole contribution.

2013年1月1日 · Spectroscopic studies of magnetically ordered materials, multiferroic insulators, and magnetic semiconductors reveal several previously unexplored mechanisms of optical second harmonic generation (SHG). In contrast to non-magnetic materials, SHG in such systems is determined by arrangements of both charges and spins.

一个例子： C_{2v}\ (mm2) 点群的SHG. 实验中SHG测量方法有很多，但光路基本如下： 这里我们以ED-SHG为例，需要考虑入射 \omega 光的偏振 \hat{e}(\omega) ，出射 2\omega 光的偏振 \hat{e}(2\omega) ，一般的测量方法有转动入射偏振片、转动出射偏振片、转动样品等等。这里我 …

2024年4月8日 · 近日，东京大学Toshiya Ideue利用光学二次谐波发生（SHG）技术，研究了范德华多铁性CuCrP2S6的对称性和磁电响应。 通过温度相关的SHG信号成功地探测了结构和磁性相变，揭示了通过施加反映磁电效应的磁场而发生的显著变化。 此外，研究还发现，通过调控层数，可以有效调制材料的对称性和磁电响应。 这些结果为多铁性的控制提供了新策略，并预示着二维范德华多铁性材料在功能纳米器件领域具有巨大的应用潜力。

光学二次谐波可以由电偶极子ED，电四极子EQ，磁偶极子MD产生。 MD产生ED-SHG吗？ 知乎，中文互联网高质量的问答社区和创作者聚集的原创内容平台，于 2011 年 1 月正式上线，以「让人们更好的分享知识、经验和见解，找到自己的解答」为品牌使命。 知乎凭借认真、专业、友善的社区氛围、独特的产品机制以及结构化和易获得的优质内容，聚集了中文互联网科技、商业、影视、时尚、文化等领域最具创造力的人群，已成为综合性、全品类、在诸多领域具有关键影响力 …

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