Light-scattering measurements of optically levitated microdroplets containing three components, glycerin, water, and ammonium sulfate, are presented. Evaporation of the microdroplet is studied by means of morphology-dependent resonances observed in both Raman spectra as well as elastically scattered light and by the simultaneous measurement of the laser power. The phase transition from the liquid to the solid state of ammonium sulfate inside the microdroplet is observed by means of morphology-dependent resonances and Raman scattering.
© 1997 Optical Society of America
Original Manuscript: August 26, 1996
Revised Manuscript: December 6, 1996
Published: May 20, 1997
M. Trunk, J. F. Lübben, J. Popp, B. Schrader, and W. Kiefer, "Investigation of a phase transition in a single optically levitated microdroplet by Raman–Mie scattering," Appl. Opt. 36, 3305-3309 (1997)