| Abstract: | The Brownian motion of a polystyrene bead trapped in a time-sharing optical tweezers(TSOT) is numerically simulated by adopting Monte-Carlo technique.By analyzing the Brownian motion signal,the effective stiffness of a TSOT is acquired at different switching frequencies.Simulation results confirm that for a specific laser power and duty ratio,the effective stiffness varies with the frequency at low frequency range,while at high frequency range it keeps constant.Our results reveal that the switching frequenc... |
