Aerosol particle microphotography and glare-spot absorption spectroscopy

S. Arnold, S. Holler, J. H. Li, A. Serpenguezel, W. F. Auffermann, S. C. Hill

Research output: Contribution to journalArticlepeer-review


The relative intensities of glare spots in the image of an electrodynamically trapped aerosol droplet are measured experimentally with an aerosol particle microscope and calculated theoretically. The theoretical calculations are in good agreement with these experiments and indicate that the intensities of these spots are extremely sensitive to the imaginary part of the refractive index. Experimentally, we obtain the molecular absorption spectrum of an impurity within a droplet by recording the spectrum of an individual glare spot produced by broadband illumination.

Original languageEnglish (US)
Pages (from-to)773-775
Number of pages3
JournalOptics Letters
Issue number7
StatePublished - Apr 1995

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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