Open AccessOptical trapping and spectral analysis of aerosols with a supercontiuum laser source
Author(s) -
Marc Guillon,
Kishan Dholakia,
David McGloin
Publication year - 2008
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.007655
Subject(s) - supercontinuum , optics , trapping , monochromatic color , laser , mie scattering , materials science , physics , light scattering , scattering , optical fiber , photonic crystal fiber , ecology , biology
We report on the optical trapping of water droplets with a supercontinuum laser source. Droplet size is determined by observing the spectrum of the on-axis backscattered light. In contrast to to monochromatic trapping, the broad spectrum of the supercontinuum covers several resonances of the first excited Mie coefficients. A minimum value of Q approximately 0.16 for the trapping efficiency is estimated.