Abstract
An investigation is taking place into a new classical scattering phenomenon
called 'collective Rayleigh scattering'. A collection of dielectric particles
pumped by a laser radiation field may form a strong density grating on the
scale of the radiation wavelength. The particles then coherently scatter the
incident radiation. Current theoretical research is confined to collective
Rayleigh scattering from particles small compared with the radiation
wavelength, for which there are many possible applications in the field of
nonlinear optics. However, by considering larger Mie particles, it can be
seen that there are also potential applications in the areas of optical particle
characterization and discrimination. This paper outlines the theoretical
framework of CRS and the first observations from preliminary experiments
utilizing a standing-wave gradient force trap.
Original language | English |
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Pages (from-to) | 263-269 |
Number of pages | 6 |
Journal | Measurement Science and Technology |
Volume | 13 |
Issue number | 3 |
DOIs | |
Publication status | Published - Mar 2002 |
Keywords
- Rayleigh scattering
- collective scattering
- small dielectric particles
- density grating
- Mie scattering
- optical trapping
- gradient force trap