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Shaun C. Bowman

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Proceedings Article | 29 August 2008 Paper

Optical tweezing using adaptive optics technology

Shaun Bowman, Rodolphe Conan, Colin Bradley

Proceedings Volume 7038, 70381H (2008) https://doi.org/10.1117/12.795369

KEYWORDS: Objectives, Actuators, Cameras, Adaptive optics, Particles, Optical tweezers, Wavefront sensors, Deformable mirrors, Prototyping, Calibration

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Optical tweezers are a relatively new technique for non-invasive manipulation of micro particles. It has applications in different scientific and technological areas, such as: cell and molecule sorting, nano device assembly, and analysis of bio motors. Standard methods to create optical tweezers rely on using either the manipulation of a single beam or a spatial light modulator. Here a new optical tweezer design is presented that employs concepts from the realm of adaptive optics. The prototype system employs a deformable mirror to control the 3D position of the traps. A specific closed-loop control algorithm, adapted from adaptive optics technology allows a real-time precise monitoring of the deformable mirror shape and provides exquisite accuracy in trap placement. The first results obtained with the prototype design are presented.

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