Abstract View
Multi-Spectral Digital Holography for Microparticles
RAMESH GIRI, Gorden Videen, Matthew Berg, Kansas State University
Abstract Number: 189
Working Group: Aerosol Physics
Abstract
Digital holography is now established as a useful technique to characterize the size and morphology of particles relevant to the coarse mode aerosols for size range (> 1um) [1]. Yet, knowledge of the material composition of particles observed with holography is limited. The understanding of the material compositions is important for many local and global climate modeling, for example, to characterize the radiative effects of mineral dust in the atmosphere. Here, we test a multiple wavelength method in digital holography to produce the color images of micro-particles. Color analysis is then used to investigate if the particles of differing material composition can be differentiated.
Reference
[1] Berg, M. J., and G. Videen, 2011: Digital holographic imaging of aerosol particles in flight. J. Quant. Spectrosc. Radiat. Transfer 112, 1776–1783.