论文标题
Terahertz和长波红外状态中的平面双层二极管调谐器
In-plane hyperbolic polariton tuners in terahertz and long-wave infrared regimes
论文作者
论文摘要
Terahertz（THZ）和长波红外（LWIR）技术的开发主要是传统材料的内在响应有限的瓶颈。范德华半导体的双曲声子极化子（HPHP）与THZ和LWIR辐射非常强。然而，光子 - 珠制动量的不匹配使HPHP的远场激发具有挑战性。在这里，我们提出了一个基于图案化的范德华半导体（此处α-MOO3）的平面内双曲线调谐器。我们证明了此类调谐器直接对远场激发作出反应，并引起LWIR和THZ共振，高质量的因子高达300，这很大程度上取决于图案化的α-MOO3的平面内双曲线极性。我们进一步表明，使用此调谐器，可以实现反射和传播电磁波的强度调节，以及它们的波长和极化选择。这对于THZ和LWIR小型设备的开发很重要。
Development of terahertz (THz) and long-wave infrared (LWIR) technologies is mainly bottlenecked by the limited intrinsic response of traditional materials. Hyperbolic phonon polaritons (HPhPs) of van der Waals semiconductors couple strongly with THz and LWIR radiation. However, the mismatch of photon-polariton momentum makes far-field excitation of HPhPs challenging. Here, we propose an In-Plane Hyperbolic Polariton Tuner that is based on patterning van der Waals semiconductors, here α-MoO3, into ribbon arrays. We demonstrate that such tuners respond directly to far-field excitation and give rise to LWIR and THz resonances with high quality factors up to 300, which are strongly dependent on in-plane hyperbolic polariton of the patterned α-MoO3. We further show that with this tuner, intensity regulation of reflected and transmitted electromagnetic waves, as well as their wavelength and polarization selection can be achieved. This is important to development of THz and LWIR miniaturized devices.
