Comparison between radiation forces upon nanoparticles in continuous laser tweezers and in pulsed laser tweezers

摘要

It is easier to obtain high energy in very short period through pulse laser than through continuous laser. And in the field of biology, especially in researching the active cells by optical tweezers, the traditional continuous laser employed in the tweezers are inclined to hurt even kill the cells. So, substituting the traditional continuous laser by pulsed laser is one probable trend for optical tweezers. This paper theoretically analyzes the radiation forces on the nanoparticles in continuous optical tweezers and in pulsed optical tweezers, respectively, compares the forces in those two cases, and obtains the simulation curves for the forces.