Thesis

Heterogenous integration of diamond with non-native substrates

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Awarding institution
  • University of Strathclyde
Date of award
  • 2019
Thesis identifier
  • T15227
Person Identifier (Local)
  • 201553526
Qualification Level
Qualification Name
Department, School or Faculty
Abstract
  • This thesis addresses the challenges with utilising diamond for integrated optical devices; a platform where its impressive material properties can be exploited. The major objective was to develop a process by which diamond could be heterogeneously integrated with non-native device platforms, to overcome its limited geometry. A process was developed for fabrication, handling, and hybrid integration of ultra thin diamond membranes. Plasma-etch chemistries were developed, that enabled such processing, and provided sub-nm r.m.s. roughness.Two sets of monolithic diamond structures were fabricated and transfer printed with a thickness down to ~10 nm. For thickness characterisation, diamond platelets, finding a low local-variation across typical device geometries. Diamond resonator devices were also fabricated and when integrated with SOI waveguides they showed high Q-factors as large as 1.8 x 10⁵. Thermo-optic tuning of these devices by > 450 pm at low mW powers was demonstrated, which has great significance to all integrated optical fields where resonant frequency of a cavity is important. The techniques developed are independent of integration platforms and are of wide reaching relevance to the optics community.
Advisor / supervisor
  • Strain, Michael
  • Gu, Erdan
Resource Type
Note
  • Strathclyde theses - ask staff. Thesis no. : T15227
DOI
Date Created
  • 2019
Former identifier
  • 9912728392702996
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