We theoretically investigate how the resonant radiation force (RF) affects the laser trapping of a single molecule by comparing the RF exerted on the dye-doped molecule and that on the non-doped one. In this investigtion, we evaluate the inter-particle radiation force (IRF) in the focal spot of the incident focused beam. The result indicates the possibility of the increase of molecular density through the IRF even in the linear response regime. We also investigate the nonlinear optical effect that greatly changes the characteristics of the RF. This result shows that the nonlinear optical effect cannot be neglected if the incident laser intensity is strong enough to trap a single molecule, and that the nonlinearity makes the resonant trapping more advantageous.
|Number of pages||4|
|Journal||Physica Status Solidi (C) Current Topics in Solid State Physics|
|State||Published - Jan 2011|
- Laser trapping
- Molecular trapping