計算機合成ホログラムによる高速マルチビーム遠隔操作

抄録

Multi-beam optical tweezers is important technique to manipulate multiple small objects. Computer Generated Hologram (CGH) is one of the techniques and it can trap more than 200 objects in three dimensions. For dexterous micromanipulation, it is useful to apply teleoperation into optical tweezers. In this research, we designed the optical system and control system of CGH Optical Tweezers (HOT) synthetically. For optical design, we considered workspace and positioning resolution. For control design, we applied with unilateral master slave control for teleoperation. For online generation of hologram, we developed GCH generator applied with General-purpose GPU acceleration which extremely improved the speed of hologram generation with parallel processing. The built system accomplished generation of 100 beams and trapping of 25 polystyrene beads for demonstration. For full automatic control, we applied stability control theory to the multi-beam control system and evaluated the effectiveness with experiment of trajectory control. Then we demonstrated teleoperation. As the result, HOT enhanced by teleoperation was improved previous controllability.