Titanium Dioxide Metasurface for Vacuum Ultraviolet Third-harmonic Generation

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dc.contributor.advisorNordlander, Peter
dc.creatorZhang, Ming
dc.date.accessioned2019-11-27T14:26:59Z
dc.date.available2020-08-01T05:01:09Z
dc.date.created2019-08
dc.date.issued2019-11-26
dc.date.submittedAugust 2019
dc.date.updated2019-11-27T14:28:39Z
dc.description.abstractVacuum ultraviolet (VUV) light, in the wavelength regime between 100nm and 200nm, is of long-lasting interest in both academia and industry for its strong photon energy and efficient absorption in most common materials. However, a simple and robust way of VUV light generation remains to be found. In this thesis, I report a titanium dioxide (TiO2) all-dielectric metasurface that enables light generation at 185nm through photonic resonance enhanced third-harmonic generation (THG). Both theoretical analysis and experimental measurements of the metasurface are presented in detail. A multi-step model to calculate generated THG strength is demonstrated. In addition, I include a heat transfer model to analyze the thermal effect of the high input laser power on THG power dependence. A nonlinear signal enhancement factor of 180 compared to an unpatterned TiO2 thin film is reported in the experiment. Finally, the possibility to further enhance the conversion efficiency of the device by using a reflective structure and redesigning the structure geometry through inverse design is also discussed in the simulation aspect.
dc.embargo.terms2020-08-01
dc.format.mimetypeapplication/pdf
dc.identifier.citationZhang, Ming. "Titanium Dioxide Metasurface for Vacuum Ultraviolet Third-harmonic Generation." (2019) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/107749">https://hdl.handle.net/1911/107749</a>.
dc.identifier.urihttps://hdl.handle.net/1911/107749
dc.language.isoeng
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.
dc.subjectTitanium dioxide
dc.subjectThird-harmonic generation
dc.subjectVacuum ultraviolet
dc.subjectMetasurface.
dc.titleTitanium Dioxide Metasurface for Vacuum Ultraviolet Third-harmonic Generation
dc.typeThesis
dc.type.materialText
thesis.degree.departmentApplied Physics
thesis.degree.disciplineNatural Sciences
thesis.degree.grantorRice University
thesis.degree.levelMasters
thesis.degree.nameMaster of Science
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