Precision optical trapping via a programmable direct-digital-synthesis-based controller for acousto-optic deflectors

A H Mack; M K Trías; S G J Mochrie

doi:10.1063/1.3053122

Precision optical trapping via a programmable direct-digital-synthesis-based controller for acousto-optic deflectors

Rev Sci Instrum. 2009 Jan;80(1):016101. doi: 10.1063/1.3053122.

Authors

A H Mack¹, M K Trías, S G J Mochrie

Affiliation

¹ Department of Applied Physics, Yale University, New Haven, Connecticut 06520, USA.

PMID: 19191462
DOI: 10.1063/1.3053122

Abstract

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.