Time-Multiplexed Laguerre-Gaussian holographic optical tweezers for biological applications.

A Lafong, William J Hossack, Jochen Arlt, T J Nowakowski, N D Read

Research output: Contribution to journalArticlepeer-review


A ferroelectric liquid crystal spatial light modulator is used to generate up to 24 independently controllable traps in a holographic optical tweezers system using time-multiplexed Fresnel zone plates. For use in biological applications, helical zone plates are used to generate Laguerre-Gaussian laser modes. The high speed switching of the ferroelectric device together with recent advances in computer technology enable fast, smooth movement of traps that can be independently controlled in real time. This is demonstrated by the trapping and manipulation of yeast cells and fungal spores.
Original languageEnglish
Pages (from-to)3065-3072
Number of pages8
JournalOptics Express
Issue number7
Publication statusPublished - Apr 2006


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