Simon Grosche, Alexander Szameit, Marco Ornigotti
We present a theoretical study of the spatial Goos-Hänchen shift occurring at the interface between two different photonic graphene lattices. Numerical simulations of light propagation in such a wave guiding system are also presented to corroborate our findings.
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Goos-H$\ddot{a}$nchen shifts of bilayer meta-grating with unidirectional guide resonance
本文研究了双层超光栅中单向导模共振引起的Goos-H\"anchen位移的异常行为，发现其与品质因子和群速度相关，并通过时间耦合模理论及数值模拟进行了验证。
Goos-H$\ddot{a}$nchen shift of normally incident beam on magneto-optical meta-grating
该研究通过磁光超光栅在正入射下增强Goos-H$\"a$nchen位移，并发现位移随光束宽度变化，为光束操控提供新机制。
Coherent Goos-H$\ddot{a}$nchen shifts of meta-grating with radiation asymmetry
本文提出超光栅的相干Goos-H\"anchen位移，通过两束相干光相对相位差控制出射光束位移，并利用单向导引共振和圆偏振态增强位移，可用于折射率传感。
Optical Amplification with Large Goos-H$\ddot{a}$nchen Shift Driven by Non-Hermitian Bilayer Meta-Grating Under Lasing State
利用宇称-时间对称双层超光栅中的增益与损耗，将连续谱束缚态转化为激光阈值模式，实现反射和透射光束的强放大及大古斯-汉欣位移，位移幅度和符号与共振频率虚部成反比，通过调谐入射频率可控制位移符号翻转。
Refractive index sensing based on large negative Goos-H$\ddot{a}$nchen shifts of wavy dielectric grating
本研究利用波浪形介质光栅的准连续谱束缚态激发产生的大负Goos-Hänchen位移，通过测量耦合到相连平板波导的能流实现背景介质折射率传感，该方案可与光路波导集成。
We report the first observation of the Goos-H$\rm \ddot{\textbf{a}}$nchen shift of a light beam incident on a metal surface. This phenomenon is particularly interesting because the Goos-H$\rm \ddot{\textbf{a}}$nchen shift for $p$ polarized light in metals is negative and much bigger than the positive shift for $s$ polarized light. The experimental result for the measured shifts as a function of the angle of incidence is in excellent agreement with theoretical predictions. In an energy-flux interpretation, our measurement shows the existence of a backward energy flow at the bare metal surface w…
The effect of surface termination on the inverse Goos Hanchen (GH) shift of two dimensional (2D) negatively refractive photonic crystal (NRPhC) containing air holes arranged in hexagonal lattice in a dielectric background is investigated for TM polarization. Results show that the magnitude of the inverse GH shift of 2DNRPhC strongly depends on surface termination even for an incident beam with a fixed frequency and incidence angle. Further study by calculating the dispersion of surface mode of 2D-NRPhC as a function of surface termination reveals that 2DNRPhC presents large inverse Goos Hanche…
We perform a theoretical investigation on the Goos-Hächen (GH) shift in one-dimensional photonic crystals (1DPCs) containing left-handed metamaterials (LHMs). We find an unusal effect of the GH shift near the photonic band-crossing structure, which is located at the condition, $% -k_{z}^{(A)}d_{A}=k_{z}^{(B)}d_{B}=mπ$ $(m=1,2,3...)$, under the inclined incident angle, here A denotes the LHM layer and B denotes the dielectric layer. Above the frequency of the band-crossing point (BCP), the GH shift changes from negative to positive as the incident angle increases, while the GH shift changes rev…
Goos-Hänchen Shift and Photonic Spin Hall Effect in Semi-Dirac Material Heterostructures
本研究通过理论建模揭示了半狄拉克材料的各向异性介电函数及无质量狄拉克电子漂移对光子自旋霍尔效应和古斯-汉欣位移的调制作用，为设计可调光子器件提供了新平台。
The energy flux patterns of inverse Goos-Hanchen (GH) shift around the interface between air and negatively refractive photonic crystal (NRPhC) with different surface terminations is investigated. Results show that NRPhC exhibits inverse GH shift in TM and TE polarization, and the localization and pattern of energy flux differ in TM and TE polarizations and are strongly affected by surface termination. This is different to the condition of negative permittivity materials (i.e., metal), which only presents inverse GH shift in TM polarization. In the case of TE polarization, the energy flux patt…
Goos-Hanchen-Shift Photonic Sensor for Nanometer-Scale Delayering and Tamper Detection in Semiconductor Packages
该研究提出一种共封装光子篡改传感器，利用古斯-汉申位移检测半导体封装的层减薄与局部钻孔，其灵敏度约为传统全内反射结构的三倍，响应稳定且难以模仿，可用于半导体封装的篡改检测。
We study experimentally the Goos-Hanchen effect observed at the reflection of a self-collimated beam from the surface of a two-dimensional photonic crystal and describe a method for controlling the beam reflection through surface engineering. The microwave photonic crystal, fabricated from alumina rods, allows control of the output position of a reflected beam undergoing an internal Goos-Hanchen shift by changing the rod diameter at the reflection surface. The experimental data is in good agreement with the results of the finite-difference time-domain numerical calculations.
Photonic scattering in 2D waveguide QED: Quantum Goos-Hänchen shift
该研究针对二维波导量子电动力学中未被充分探索的散射问题，基于格林函数方法提出完整散射理论，发现量子古斯-汉欣位移及其调控规律，为复杂WQED网络的光子散射研究提供通用框架。
A formalism for giant Goos-Hänchen shift in metasurface sensors with phase singularity
本文提出了一种描述超表面传感器中巨量Goos-Hänchen位移的理论框架，通过设计高灵敏度的BSW超表面，实现了比现有传感器高5个数量级的灵敏度，并揭示了检测极限的理论下限。
Motivated by the realization of the Dirac point (DP) with a double-cone structure for optical field in the negative-zero-positive index metamaterial (NZPIM), the reflection, transmission, and Goos-Hänchen (GH) shifts inside the NZPIM slab are investigated. Due to the linear Dirac dispersion, the transmission as the function of the frequency has a gap, thus the correspond reflection has a frequency or wavelength window for the perfect reflection, which is similar to the Bragg reflection in the one-dimensional photonic crystals. Near the DP, the associated GH shifts in the transmission and refle…
Optical beam shifts from a free-standing two-dimensional atomic crystal are investigated. In contrast to a three-dimensional crystal the magnitude of the Goos-H$\rm \ddot{a}$nchen shift depends on the surface susceptibility of the crystal and not on the wavelength of the incident light beam. The surface conductivity of the atomically thin crystal is less important in this context because it enters in the expression of the shifts only as a second order parameter. In analogy to a three-dimensional crystal the magnitudes of the Imbert-Fedorov shift and of the angular shifts depend respectively on…
Omnidirectional wave impedance matching and Goos-Hanchen shifts in non-Hermitian balanced positive-negative index metamaterials
研究非厄米反宇称-时间（APT）光子学中由平衡正折射率材料（PIM）和负折射率材料（NIM）构成的波反射，发现全向波阻抗匹配（WIM）可在无极化依赖下实现，而反射谷伴随相位跳变导致显著古斯-汉欣（GH）位移。
We predict quantized Imbert-Fedorov, Goos-Hänchen, and photonic spin Hall shifts for light beams impinging on a graphene-on-substrate system in an external magnetic field. In the quantum Hall regime the Imbert-Fedorov and photonic spin Hall shifts are quantized in integer multiples of the fine structure constant $α$, while the Goos- Hänchen ones in multiples of $α^2$. We investigate the influence on these shifts of magnetic field, temperature, and material dispersion and dissipation. An experimental demonstration of quantized beam shifts could be achieved at terahertz frequencies for moderate …
Goos-Hänchen Shift in $\mathcal{PT}$-Symmetric and Passive Cavity Optomechanical Systems
本文研究了在$\mathcal{PT}$对称和被动腔量子力学系统中通过单光学力学平台控制反射弱探测场Goos-Hänchen位移的方法，发现通过调节有效耦合强度可产生例外点，并展示了在不同$\mathcal{PT}$相态下位移的强相位依赖性及主动调节机制。
On anomalous optical beam shifts at near-normal incidence
本文发展了近正入射条件下的光束位移理论，揭示了异常位移增强源于Berry相位奇点，并提出利用四分之一波片同时观测巨光束位移的实验方案。
The formation of a superstructure - with a related Moiré pattern - plays a crucial role in the extraordinary optical and electronic properties of twisted bilayer graphene, including the recently observed unconventional superconductivity. Here we put forward a novel, interdisciplinary approach to determine the Moiré angle in twisted bilayer graphene based on the photonic spin Hall effect. We show that the photonic spin Hall effect exhibits clear fingerprints of the underlying Moiré pattern, and the associated light beam shifts are well beyond current experimental sensitivities in the near-infra…
Direct observation of the enhanced photonic spin Hall effect in a subwavelength grating supporting surface plasmon resonance
本研究利用光学弱测量在支持表面等离子体共振（SPR）的亚波长镍光栅中直接观测到增强的面内光子自旋霍尔效应（PSHE），实现高纯度自旋分离，为偏振敏感应用提供基础。
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