Seminars on Numerical Algebra, Optimization and Data Sciences:Fast Eigensolvers for 3D Maxwell’s Equations for Photonic Crystals

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:李铁香(东南大学)
:2022-11-18 10:00
:腾讯会议ID:557-156-467(无密码)

报告人:李铁香(东南大学)

时  间:1118日上午10:00-11:30

地  点:腾讯会议ID557-156-467(无密码)

内容摘要:

In this talk, we consider studying the eigen-decomposition and developing the fast solver for 3D Maxwell’s equations for photonic crystals. The fast algorithm for Maxwell’s equations (FAME) is proposed for band structure calculations of 3D isotopic/anisotropic photonic crystals(PCs), especially with non-orthogonal Bravais lattices. By directly working with the intrinsic coordinate system with Bravais translation lattices/inverse lattices as basis/inverse basis and covariant/contravariant formulations, the frequency domain Maxwell’s equations are discretized into a genralized eigenvalue problem (GEP). With an alternative understanding of nullspace-deflation techniques, this GEP is transformed into several equivalent nullspace free GEPs (NFGEPs), whose smallest few positive eigenvalues and associated eigenvectors are solved by an iterative eigensolver of the inner-outer type. Comparison with other methods for band structure calculations of 3D anisotropic/isotropic PCs is made to demonstrate the effectiveness and strength of our present approach.

人简介:

李铁香,教授,博士研究生导师,东南大学丘成桐中心主任助理,南京应用数学中心主任助理。主要研究方向为大规模矩阵计算及其应用、电磁场高效计算、三维计算共形几何及应用、反问题计算等。目前已经在 SIIMSSIMAXACM TOMACPCJDEJCPJSCInverse Problems等国际学术刊物发表学术论文50余篇,主持三项国家自然科学基金项目。2013年获得江苏省科学技术奖(排名5),2014年评为江苏省青蓝工程中青年学术带头人,获得了 2017 年和 2019 年世界华人数学家联盟最佳论文奖—“若琳奖”,获得2020年第三届江苏省工业与应用数学学会工业与应用数学青年奖。

 

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