论文标题
逆设计的THZ光谱拆分器
Inverse Designed THz Spectral Splitters
论文作者
论文摘要
这封信报告了基于衍射的光学元素（DID）的3D可打印，低成本和紧凑的THZ光谱拆分器的原则证明，旨在以预先指定的距离分散事件准入的宽带THZ辐射（0.5 THz-0.7 THz）。通过逆设计，我们表明可以设计出这样的衍射视神经器，该视神经元件可以以任何所需的方式拆分宽带事件频谱，这可以从FDTD模拟和使用500-750 GHz VNA进行测量的强度曲线中证明。由于其直接构造而没有任何可移动零件的使用，因此我们的方法原则上可以具有各种应用，例如在便携式，低成本光谱以及无线THZ通信系统中，作为THZ Exultiplexer。
This letter reports proof-of-principle demonstration of 3D printable, low-cost, and compact THz spectral splitters based on diffractive optical elements (DOEs) designed to disperse the incident collimated broadband THz radiation (0.5 THz - 0.7 THz) at a pre-specified distance. Via inverse design, we show that it is possible to design such a diffractive optic, which can split the broadband incident spectrum in any desired fashion, as is evidenced from both FDTD simulations and measured intensity profiles using a 500-750 GHz VNA. Due to its straightforward construction without the usage of any movable parts, our approach, in principle, can have various applications such as in portable, low-cost spectroscopy as well as in wireless THz communication systems as a THz demultiplexer.
