Few layered transition metal dichalcogenides (TMD), with an absence of crystal inversion symmetry and outstanding optical characteristics, are frequently applied in studies of nonlinear optics (NLO) for harmonic generation. Related materials are regarded as potential candidates for many optoelectronics applications. In order to enhance and manipulate the intrinsically weak NLO responses, TMD’s have been fabricated into heterostructures in recent years. The basic physics of harmonic generation and of TMD optical responses, as well as the interactions in TMD hybrid structures are introduced briefly, and the current state-of-the-art in the performance of TMDs in harmonic generation are reviewed. A particular focus is made on heterostructure studies to enhance and manipulate the response, which represent the core issues for devices and applications.

很少有层状过渡金属二硫属化物 (TMD) 缺乏晶体反转对称性和出色的光学特性，经常应用于非线性光学 (NLO) 的谐波生成研究。相关材料被认为是许多光电应用的潜在候选材料。为了增强和操纵本质上较弱的 NLO 响应，近年来已将 TMD 制成异质结构。简要介绍了谐波产生和 TMD 光学响应的​​基本物理原理，以及 TMD 混合结构中的相互作用，并回顾了 TMD 在谐波产生方面的最新性能。特别关注异质结构研究以增强和操纵响应，这代表了设备和应用程序的核心问题。