Precision optical trapping via a programmable direct-digital-synthesis-based controller for acousto-optic deflectors.
We describe a simple-to-construct programmable direct-digital-synthesis-based controller for use with acousto-optic deflectors. Our controller corrects for nonlinear diffraction efficiency versus diffraction angle, provides superior stability, functionality, and configurability, and costs a fraction of commercially available systems. Using this instrument, we move a 1 mum diameter bead by 1-nm-sized steps and resolve these steps.
Mack
A H
AH
Department of Applied Physics, Yale University, New Haven, Connecticut 06520, USA.
Trías
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Mochrie
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