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Third-harmonic generation enhancement in an ITO nanoparticle-coated microresonator Public Deposited

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https://scholar.colorado.edu/concern/articles/cr56n2351
Abstract
  • We report a ∼3-fold enhancement of third-harmonic generation (THG) conversion efficiency using indium tin oxide (ITO) nanoparticles on the surface of an ultra-high-Q silica microsphere. This is one of the largest microcavity-based THG enhancements reported. Phase-matching and spatial mode overlap are explored numerically to determine the microsphere radius (∼29 µm) and resonant mode numbers that maximize THG. Furthermore, the ITO nanoparticles are uniformly bonded to the cavity surface by drop-casting, eliminating the need for complex fabrication. The significant improvement in THG conversion efficiency establishes functionalized ITO microcavities as a promising tool for broadband frequency conversion, nonlinear enhancement, and applications in integrated photonics.

Creator
Date Issued
  • 2020
Academic Affiliation
Journal Title
Journal Issue/Number
  • 20
Journal Volume
  • 28
Last Modified
  • 2022-05-23
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DOI
ISSN
  • 1094-4087
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