Fundamental limits to local density of states in absorptive system
Name
1202001376-MIT.pdf
Size
5.54 MB
Format
Adobe PDF
Checksum (MD5)
a907c1396dbaf4f95e54b6745700cfba
Author(s)
Yao, Wenjie(Electrical and computer science engineer)Massachusetts Institute of Technology.
Advisor(s)
Steven G. Johnson.
Date Issued
2020
Publisher
Massachusetts Institute of Technology
Abstract
Fundamental limits to optical responses such as absorption, scattering and local density of states (LDOS) are proposed given intrinsic material losses by Owen, etc. The absorption and scattering limits are validated in Owen's work while the LDOS of common structures fall short of the limits. To validate those theoretical limits in LDOS, comprehensive studies are conducted in the metallic cavity structures, as typical resonant cavities will produce high LDOS. A novel shape optimization method based on the adjoint method is presented in this work, several numerical methods (BEM, CGAL, etc.) and optimization methods are implemented to enable more efficient evaluation and reduce the computation costs.
Description
Thesis: S.M., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, February, 2020
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 57-62).
Subjects
Electrical Engineering and Computer Science.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
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MIT theses may be protected by copyright. Please reuse MIT thesis content according to the MIT Libraries Permissions Policy, which is available through the URL provided.
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