Abstract

Resonances observed in the polarization ratio of light scattered at 90° from single optically levitated evaporating droplets are shown to provide a means for continuous high-resolution monitoring of droplet size. Due to the distinctive character of the individual features in the polarization ratio, each experimentally measured feature could be clearly identified with a specific calculated one. For evaporating droplets of glycerol from 6.6 to 11.5 μm in diameter, the sharp features which appeared in the calculations at ∼0.03-μm intervals allowed measurement of droplet diameter to a resolution of 0.003 μm.

© 1981 Optical Society of America

Observation of suppression of morphology-dependent resonances in singly levitated micrometer-sized droplets

M. Essien, J. B. Gillespie, and R. L. Armstrong
Appl. Opt. 31(12) 2148-2153 (1992)

Observation of optical resonances of dielectric spheres by light scattering

A. Ashkin and J. M. Dziedzic
Appl. Opt. 20(10) 1803-1814 (1981)

Structural resonances observed in the Raman spectra of optically levitated liquid droplets

Rudolf Thurn and Wolfgang Kiefer
Appl. Opt. 24(10) 1515-1519 (1985)

Investigation of coated droplets in an optical trap: Raman-scattering, elastic-light-scattering, and evaporation characteristics

T. Kaiser, G. Roll, and G. Schweiger
Appl. Opt. 35(30) 5918-5924 (1996)

Optical measurement of the evaporation of sulfuric acid droplets

C. B. Richardson, R. L. Hightower, and A. L. Pigg
Appl. Opt. 25(7) 1226-1229 (1986)