Size determination of mixed liquid and frozen water droplets using interferometric out-of-focus imaging. (July 2016)

• Record Type: Journal Article
• Authors: Jacquot Kielar, Justin; Wu, Yingchun; Coëtmellec, Sébastien; Lebrun, Denis; Gréhan, Gérard; Brunel, Marc
• Is Part Of: Journal of quantitative spectroscopy & radiative transfer. Volume 178(2016:Jul.)
• Page Start: 108
• Page End: 116
• Publication Date: 2016-07
• Subjects: Interferometric particle imaging -- Digital holography -- Ice particles -- Droplets; Spectrum analysis -- Periodicals; Radiation -- Periodicals; Analyse spectrale -- Périodiques; Rayonnement -- Périodiques; Radiation; Spectrum analysis; Periodicals; 543.0858
• DOI: 10.1016/j.jqsrt.2015.09.009
• Languages: English
• ISSNs: 0022-4073

Abstract

Abstract: We record simultaneously interferometric out-of-focus images and digital in-line holograms of liquid and frozen water droplets. We show that the analysis of speckle-like out-of-focus images allows a quantitative estimation of the size of the particles which is corroborated by numerical reconstruction of holograms recorded simultaneously. Interferometric out-of-focus imaging could be extended to the characterization of ice in clouds in the atmosphere. Highlights: Interferometric out-of-focus imaging is used to measure size of liquid and frozen water droplets. Results are validated using digital in-line holography. Rate of errors is evaluated.