Multiple dual-beam traps for three-dimensional position control of particles

Peter John Rodrigo; Vincent Ricardo Daria; Jesper Gluckstad

doi:10.1117/12.559587

18 October 2004 Multiple dual-beam traps for three-dimensional position control of particles

Peter John Rodrigo, Vincent Ricardo Daria, Jesper Gluckstad

Proceedings Volume 5514, Optical Trapping and Optical Micromanipulation; (2004) https://doi.org/10.1117/12.559587
Event: Optical Science and Technology, the SPIE 49th Annual Meeting, 2004, Denver, Colorado, United States

Abstract

We demonstrate an optical micromanipulation system that emables simultaneous trapping of a plurality of particles and interactive control of their trapping positions in three dimensions (3D). This functionality is achieved through the application of phase-only spatial light modulators (SLM) in a highly efficient generation of advanced counterpropagating-beam or dual-beam traps in an extended array. The array of counterpropagating-beam traps is composed of the s and p -polarized components of a dynamically reconfigurable intensity pattern created via the generalized phase contrast method. A power-preserving scheme using a spatial polarization modulator (SPM) allows us to vary the relative strengths of the two orthogonal polarizations thereby controlling the axial trap positions of the particles. Experimental resulst show the interactive manipulation of poystyrene microspheres in 3D achieving a dynamic range in axial position conrol as large as 20μm.

Citation Download Citation

Peter John Rodrigo, Vincent Ricardo Daria, and Jesper Gluckstad "Multiple dual-beam traps for three-dimensional position control of particles", Proc. SPIE 5514, Optical Trapping and Optical Micromanipulation, (18 October 2004); https://doi.org/10.1117/12.559587

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