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Title page for ETD etd-12112012-220751


Type of Document Master's Thesis
Author Adams, Charles Hubert
URN etd-12112012-220751
Title Measurement of the third-order nonlinear refractive index of vanadium oxide nanoscrolls
Degree Master of Science
Department Physics
Advisory Committee
Advisor Name Title
Richard F. Haglund, Jr. Committee Chair
James H. Dickerson II Committee Member
Norman H. Tolk Committee Member
Keywords
  • Vanadium Dioxide
  • Optical Limiting
  • Nonlinear Optics
  • Nanoscrolls
  • Nanotubes
  • Vanadium Oxide
Date of Defense 2012-04-26
Availability unrestricted
Abstract
Vanadium dioxide is a strongly correlated electronic material which undergoes a

phase transition from a semiconducting to metallic state when illuminated with an intense

electric field. This phase transition marks interest in using VO2 as an optical limiter In

this work, the z-scan method is used to find the third order nonlinear index n2 of VOx

nanoscrolls prepared via a sol-gel method and then suspended in a liquid. The nonlinear

index is then compared to the third order nonlinear index of multi-wall carbon nanotubes

(also suspended in a liquid), and gold nanoparticles implanted in glass. Both the VOx

nanoscrolls and multi-wall carbon nanotubes have similar n2, while the gold nanoparticles

exhibit a much larger nonlinear index.

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