Hollow Bessel-like beam as an optical guide for a stream of microscopic particles
Date
2013-12-16
Authors
Eckerskorn, Niko
Li, Li
Kirian, Richard A
Küpper, Jochen
DePonte, Daniel P
Lee, Woei M
Chapman, Henry N
Rode, Andrei V
Krolikowski, Wieslaw
Journal Title
Journal ISSN
Volume Title
Publisher
Optical Society of America
Abstract
Current aerosol sample injection methods for coherent x-ray morphology suffer from excessive sample consumption due to the dispersion of the aerosol. To remedy this we propose here a high aspect ratio optical funnel by using a hollow Bessel-like beam with variable divergence, which may reduce sample consumption significantly. We present estimated optical forces exerted on the particles in the transverse plane, depending on various experimental conditions. We show that light pressure imposed by a funnel formed with 4.2 W continuous wave laser is sufficient to divert a stream of 2 µm polystyrene particles travelling ~50 m/s by ~1.5 × 10(-3) rad.
Description
Keywords
colloids, computer simulation, computer-aided design, equipment design, equipment failure analysis, flow injection analysis, lighting, models, theoretical, particle size, surface plasmon resonance, optical tweezers
Citation
Collections
Source
Optics express
Type
Journal article
Book Title
Entity type
Access Statement
Open Access