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1: Opt Lett. 2008 Mar 15;33(6):599-601.Click here to read Links

Precision steering of an optical trap by electro-optic deflection.

Valentine MT, Guydosh NR, Gutiérrez-Medina B, Fehr AN, Andreasson JO, Block SM.

Department of Biology, Stanford University, Stanford, California 94305, USA.

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.

PMID: 18347722 [PubMed - indexed for MEDLINE]