A Caltech Library Service

Physics and Applications of Optical Nonlinearity in High-Q Microresonators


Yuan, Zhiquan (2024) Physics and Applications of Optical Nonlinearity in High-Q Microresonators. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/vj6e-wr82.


Optical microresonators trap light in compact volumes at discrete resonant frequencies. Benefiting from the ultra-low propagation loss, the electromagnetic wave intensity is greatly enhanced. Due to the pronounced light confinement, nonlinear optical effects are significantly magnified in the microresonators. In this thesis, I investigate various nonlinear optical phenomena using high quality factor silica wedge and fully-integrated thin film silicon nitride microresonators. The exploration begins with Kerr nonlinearity-induced soliton microcombs followed by their application in mid-IR band gas spectroscopy. The generation of solitons under normal dispersion conditions, which frustrate soliton formation, is then considered. Subsequently, attention is directed towards stimulated Brillouin lasers and their frequency noise performance, including long-term frequency stabilization based on the built-in temperature reference and validation of two modification factors affecting short-term fundamental linewidth. Along this journey, a novel method for calibrating ultra-narrow laser linewidths is introduced. Lastly, this method is employed to measure the narrow linewidth of a visible laser generated through second harmonic generation in silicon nitride resonators.

Item Type:Thesis (Dissertation (Ph.D.))
Subject Keywords:Nonlinear Optics; Microresonators
Degree Grantor:California Institute of Technology
Division:Engineering and Applied Science
Major Option:Applied Physics
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Vahala, Kerry J.
Thesis Committee:
  • Faraon, Andrei (chair)
  • Atwater, Harry Albert
  • Painter, Oskar J.
  • Vahala, Kerry J.
Defense Date:16 January 2024
Funding AgencyGrant Number
Defense Advanced Research Projects Agency (DARPA)HR0011-22-2-0009
Defense Advanced Research Projects Agency (DARPA)HR001-20-2-0044
Defense Threat Reduction Agency. Joint Science and Technology OfficeHD-TRA11810047
Air Force Office of Scientific Research (AFOSR)FA9550-18-1-0353
Record Number:CaltechTHESIS:01262024-232942660
Persistent URL:
Related URLs:
URLURL TypeDescription adapted for Ch. 3 adapted for Ch. 3 adapted for Ch. 4 adapted for Ch. 5 adapted for Ch. 6 adapted for Ch. 7 adapted for Ch. 8 adapted for Ch. 9
Yuan, Zhiquan0000-0001-9054-6004
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:16284
Deposited By: Zhiquan Yuan
Deposited On:12 Mar 2024 20:47
Last Modified:19 Mar 2024 17:13

Thesis Files

[img] PDF - Final Version
See Usage Policy.


Repository Staff Only: item control page