Radial profiling of microdroplets using cavity-enhanced Raman spectroscopy

  • Lin H
  • Campillo A
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The composition of 7.7-μm-radius methanol–water droplets was radially resolved by cavity-enhanced Raman spectroscopy. Optical cavity modes, encompassing well-defined radial zones within each droplet, were sequentially excited by a 514.5-nm laser beam to generate spontaneous Raman scattered light. The cavity-enhanced Raman spectral peaks gave information as to the identity and amount of species present. The measured radial and time dependence of the methanol concentration agreed with a diffusion-limited evaporation mode.

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  • H.-B. Lin

  • A. J. Campillo

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