Abstract
In dexterous micromanipulation, we need multi-beam optical tweezers which can manipulate multiple objects at once. Time-shared Scanning (TSS) and phase modulation of laser are typical multi-beam control methods. TSS can manipulate a few objects in high speed; on the other hand, the methods using phase modulation can manipulate a lot of objects in slow speed. In this research, we propose integration of these heterogeneous methods to improve manipulability of previous optical tweezers. We named this system Integrated Optical Tweezers. We designed and built the optical system and the control system totally. In the optical system, we used Generalized Phase Contrast (GPC) as phase modulation method and fabricated phase contrast filter with micro-fabrication technique. In the control system, we applied unilateral and bilateral teleoperation system. For the bilateral teleoperation, we propose force measurement method which has femto newton resolution. With the built system, we evaluated the performance and usefulness numerically or experimentally. We concluded this concept of integration system is helpful for practical situation.
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