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Dielectric Metasurfaces from Fundamentals to Applications


Kamali, Seyedeh Mahsa (2019) Dielectric Metasurfaces from Fundamentals to Applications. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/TPN1-XA53.


In the past few decades, the advancements in nanotechnology have significantly altered many fields of science and technology, especially electronics and integrated photonics. Free-space optics, on the other hand, has remained mostly unaffected, and even today "optics" reminds us of carefully shaped and polished pieces of various types of glasses and crystals lumped into lenses and beam shapers. Several of these devices are then combined into more complicated optical systems like microscopes and pulse shapers that are expensive, bulky, sensitive to various environmental factors, and require several alignment steps. This thesis contains my work on designing and utilizing structures engineered at the nano-scale, which are called metasurfaces, to implement compact optical elements and systems with capabilities beyond those of conventional refractive and diffractive optics. My contributions to this field are two-fold: I have developed and contributed to the development of new concepts that take metasurfaces beyond conventional difractive optics in various aspects, in addition to paradigm changing platforms for optical element and system design. Here, I first give an overview and a brief history about optical metasurfaces. Next I discuss the unprecedented capabilities of metasurfaces in controlling light based on its degrees of freedom like illumination angle and polarization. Then, I will focus on various novel metasurface platforms of conformal and tunable metasurfaces, 3D metasurface beam shapers, and integrated metasurfaces. I conclude with an outlook on future potentials and challenges that need to be overcome for realizing their wide-spread applications.

Item Type:Thesis (Dissertation (Ph.D.))
Subject Keywords:Nano-optics, Nanophotonics, Optical metasurfaces
Degree Grantor:California Institute of Technology
Division:Engineering and Applied Science
Major Option:Electrical Engineering
Awards:Demetriades-Tsafka-Kokkalis Prize in Nanotechnology or Related Fields, 2019. Everhart Distinguished Graduate Student Lecturer Award, 2018.
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Faraon, Andrei
Group:Kavli Nanoscience Institute
Thesis Committee:
  • Emami, Azita (chair)
  • Faraon, Andrei
  • Atwater, Harry Albert
  • Wang, Lihong
  • Minnich, Austin J.
Defense Date:3 May 2019
Non-Caltech Author Email:mahsa.kamali68 (AT)
Record Number:CaltechTHESIS:05112019-120905666
Persistent URL:
Related URLs:
URLURL TypeDescription adapted for Chs. 1 and 8. adapted for Ch. 2. adapted for parts of Ch. 3. adapted for Ch. 4. adapted for Ch. 5. adapted for Ch. 7.
Kamali, Seyedeh Mahsa0000-0002-6968-811X
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:11508
Deposited By: Seyedeh Mahsa Kamali
Deposited On:28 May 2019 19:00
Last Modified:18 Jun 2020 16:33

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