Proposed selective optical transport of nanoparticles using counter-propagating beams

Abstract

We theoretically study the optical selective transport of nanoparticles with electronic resonance levels using counterpropagating laser beams. In our previous work, we suggested the possibility of selective transport of nanoparticles with electronic resonance levels by using the corresponding resonant light. However, such transporting is difficult when the contribution of the background dielectric constant is much larger than that of the electric resonance. Even in such situation, the selective transport is possible if we use counter-propagating laser beams. We show this possibility by the calculation of exerted force on nanoparticles and Brownian dynamics analysis.