Author Affiliations
Abstract
1 Polytechnique Montréal, Department of Electrical Engineering, Montréal, Quebec, Canada
2 Polytechnique Montréal, Department of Engineering Physics, Montréal, Quebec, Canada
3 Universidade de Lisboa - Instituto Superior Técnico and Instituto de Telecomunicações, Department of Electrical Engineering, Lisbon, Portugal
We perform a comprehensive analysis of uniform-velocity bilayer spacetime crystals, combining concepts of conventional photonic crystals and special relativity. Given that a spacetime crystal consists of a sequence of spacetime discontinuities, we do this by solving the following sequence of problems: (1) the spacetime interface, (2) the double spacetime interface, or spacetime slab, (3) the unbounded crystal, and (4) the truncated crystal. For these problems, we present the following results: (1) an extension of the Stokes principle to spacetime interfaces, (2) an interference-based analysis of the interference phenomenology, (3) a quick linear approximation of the dispersion diagrams, a description of simultaneous wavenumber and frequency bandgaps, and (4) the explanation of the effects of different types of spacetime crystal truncations and the corresponding scattering coefficients. This work may constitute the foundation for a virtually unlimited number of novel canonical spacetime media and metamaterial problems.
crystals special relativity Lorentz transformations spacetime bandgap structures Advanced Photonics
2019, 1(5): 056002
贵州大学理学院, 贵州大学新型光电子材料与技术研究所, 贵州 贵阳550025
基于狭义相对论的基本观点, 研究了特征X-ray的产生机理, 分析了在狭义相对论下转动质量效应对X-ray光谱的影响, 导出了一个计算X-ray特征波长的公式, 同时对计算推导的特征波长值做了系统的误差分析, 得到了相对误差的规律。 结果表明, 计算推导的波长值与实验的波长值相比是非常的接近的, 并且随着原子序数的增加, 转动质量效应对特征波长的影响越来越明显, 研究结果在实际应用中对分析特征X-ray光谱具有一定的参考意义。
狭义相对论 特征X-ray 转动质量效应 光谱 Special relativity Characteristic X-ray Rotational mass effect Spectrum 光谱学与光谱分析
2010, 30(4): 1136
1 西安电子科技大学,陕西,西安,710071
2 西安应用光学研究,陕西,西安,710065
由于基于牛顿经典理论的传统光线跟踪法无法实现物体高速运动时的时空相对效应可视化,本文提出一种改进的光线跟踪系统.通过定义一组参数,使得不同惯性参照系中的坐标系的轴经旋转变换后相互对齐平行.通过建立四维数据结构及加入媒介信息堆栈,可以准确计算光线在媒介中的传输速度及延迟,实现时空系统中光的透射及折射现象的可视化.
光线跟踪 狭义相对论 罗伦兹变换式 ray tracing special relativity Lorentz Transformation Equtor
