Precision steering of an optical trap by electro-optic deflection |
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Authors: | Valentine Megan T Guydosh Nicholas R Gutiérrez-Medina Braulio Fehr Adrian N Andreasson Johan O Block Steven M |
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Affiliation: | Department of Biology, Stanford University, Stanford, California 94305, USA. |
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Abstract: | We designed, constructed, and tested a single-beam optical trapping instrument employing twin electro-optic deflectors (EODs) to steer the trap in the specimen plane. Compared with traditional instruments based on acousto-optic deflectors (AODs), EOD-based traps offer a significant improvement in light throughput and a reduction in deflection-angle (pointing) errors. These attributes impart improved force and position resolution, making EOD-based traps a promising alternative for high-precision nanomechanical measurements of biomaterials. |
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