论文标题
表面声子 - 波利顿共振的近场红外纳米谱镜检查
Near-field infrared nano-spectroscopy of surface phonon-polariton resonances
论文作者
论文摘要
我们介绍了在纳米长度尺度下的光结合相互作用的合并实验和数值工作。我们报告了近场红外纳米镜检查的新型数值模拟，该模拟首次考虑详细的尖端几何形状且没有免费参数。我们的结果匹配了幅度和相测量的光谱形状，即使是强烈共振的表面声子 - 果龙（SPHP）模式。他们还首次验证发布的绝对散射幅度。一种新型的超人物光源使近红外光谱范围的近场幅度和相相获取。这使我们能够在大约24微米的入射光波长下发现极性介电SRTIO3（STO）中的强烈SPHP共振。
We present combined experimental and numerical work on light-matter interactions at nanometer length scales. We report novel numerical simulations of near-field infrared nanospectroscopy that consider, for the first time, detailed tip geometry and have no free parameters. Our results match published spectral shapes of amplitude and phase measurements even for strongly resonant surface phonon-polariton (SPhP) modes. They also verify published absolute scattering amplitudes for the first time. A novel, ultrabroadband light source enables near-field amplitude and phase acquisition into the far-infrared spectral range. This allowed us to discover a strong SPhP resonance in the polar dielectric SrTiO3 (STO) at approximately 24 micrometer wavelength of incident light.
