Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/150370
Title: LIGHT GUIDING PHOTONIC DEVICES IN SINGLE CRYSTAL DIAMOND
Authors: JIN HUINING
ORCID iD:   orcid.org/0000-0002-4166-9670
Keywords: diamond photonics, ion implanted waveguide, proton beam writing, hyper spectral imaging, grating coupler, diamond waveguide
Issue Date: 23-Aug-2018
Citation: JIN HUINING (2018-08-23). LIGHT GUIDING PHOTONIC DEVICES IN SINGLE CRYSTAL DIAMOND. ScholarBank@NUS Repository.
Abstract: Ion-implanted waveguides have been directly written in bulk singlecrystal diamond by scanning a focused 2 MeV proton beam. Single mode light guiding has been realized for the first time in the waveguides that are implanted at correct fluences and treated with appropriate thermal annealing. The normalized intensity of the diamond Raman line has proven to be the signature of guiding performance of an implanted waveguide. Cross-sectional Raman/PL spectroscopy has been used to study the proton-implanted diamond. Hyper-spectral mapping of the implanted microstructures has visually confirmed the formation mechanism and the distribution of color centers. It has been discovered that the implantation end of range is split into finer sub-regions, which are characterized by different defect center emissions. To address the light coupling problem facing integrated diamond photonic devices, design of a monolithic grating coupler has been optimized for efficient light coupling between a diamond waveguide and a commercial SMF28 fiber.
URI: http://scholarbank.nus.edu.sg/handle/10635/150370
Appears in Collections:Ph.D Theses (Open)

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