Elham Hosseini Toodeshki

Topic

Advances in Erbium-Doped Nanostructures: From Nanothermometry Applications to Single Photon Emission and Microresonator Innovations

Department of Electrical and Computer Engineering

Date & location

• Monday, May 13, 2024

• 10:00 A.M.

• Virtual Defence

Reviewers

Supervisory Committee

• Dr. Reuven Gordon, Department of Electrical and Computer Engineering, University of Victoria (Supervisor)

• Dr. Jens Bornemann, Department of Electrical and Computer Engineering, UVic (Member)

• Dr. Andrew MacRae, Department of Physics, UVic (Outside Member) 

External Examiner

• Dr. Yuebing Zheng, Department of Mechanical Engineering, University of Texas at Austin 

Chair of Oral Examination

• Dr. Dean Karlen, Department of Physics and Astronomy, UVic

   

Abstract

This dissertation examines erbium-doped micro and nanostructures in-depth, with a focus on optical properties and fabrication techniques. It investigates nanothermometry, emphasizing the stoichiometric control possible in these materials, and demonstrates ratiometric temperature measurement at the nanoscale. The research achieves significant results in trapping erbium-containing nanocrystals using optical tweezers and nanoaperture trapping techniques, establishing their capabilities as single-photon sources. The study goes on to describe the fabrication of erbium doped silica microcavities and thin films using the sol-gel method, revealing their potential in creating microdisks that support low-threshold lasing.