Optical trapping and spectral analysis of aerosols with a supercontiuum laser source.
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.
Guillon
M
M
Electronic Engineering and Physics, University of Dundee, Nethergate, Dundee, UK. m.guillon@dundee.ac.uk
Dholakia
K
K
McGloin
D
D
D000336:Aerosols / Q000302:isolation & purification*; D003198:Computer Simulation; D017076:Computer-Aided Design; D004784:Environmental Monitoring / Q000295:instrumentation*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008962:Models, Theoretical; D052898:Optical Tweezers; D013057:Spectrum Analysis / Q000295:instrumentation*; D014867:Water / Q000032:analysis*
D000336:Aerosols; D014867:Water