Simulation of superresolution holography for optical tweezers

Details Simulation of superresolution holography for optical tweezers Simulation of superresolution holography for optical tweezers

Feb 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008njph...10b3015t&link_type=abstract

New Journal of Physics, Volume 10, Issue 2, pp. 023015 (2008).

Physics

3

Scientific paper

Optical tweezers manipulate microscopic particles using foci of light beams. Their performance is therefore limited by diffraction. Using computer simulations of a model system, we investigate the application of superresolution holography for two-dimensional (2D) light shaping in optical tweezers, which can beat the diffraction limit. We use the direct-search and Gerchberg algorithms to shape the center of a light beam into one or two bright spots; we do not constrain the remainder of the beam. We demonstrate that superresolution algorithms can significantly improve the normalized stiffness of an optical trap and the minimum separation at which neighboring traps can be resolved. We also test if such algorithms can be used interactively, as is desirable in optical tweezers.

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