Titanium Dioxide Metasurface for Vacuum Ultraviolet Third-harmonic Generation

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dc.contributor.advisorNordlander, Peteren_US
dc.creatorZhang, Mingen_US
dc.date.accessioned2019-11-27T14:26:59Zen_US
dc.date.available2020-08-01T05:01:09Zen_US
dc.date.created2019-08en_US
dc.date.issued2019-11-26en_US
dc.date.submittedAugust 2019en_US
dc.date.updated2019-11-27T14:28:39Zen_US
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.en_US
dc.embargo.terms2020-08-01en_US
dc.format.mimetypeapplication/pdfen_US
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>.en_US
dc.identifier.urihttps://hdl.handle.net/1911/107749en_US
dc.language.isoengen_US
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.en_US
dc.subjectTitanium dioxideen_US
dc.subjectThird-harmonic generationen_US
dc.subjectVacuum ultravioleten_US
dc.subjectMetasurface.en_US
dc.titleTitanium Dioxide Metasurface for Vacuum Ultraviolet Third-harmonic Generationen_US
dc.typeThesisen_US
dc.type.materialTexten_US
thesis.degree.departmentApplied Physicsen_US
thesis.degree.disciplineNatural Sciencesen_US
thesis.degree.grantorRice Universityen_US
thesis.degree.levelMastersen_US
thesis.degree.nameMaster of Scienceen_US
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