Holographic optical tweezers in the Fresnel regime

Alexander Jesacher; Severin Furhapter; Stefan Bernet; Monika Ritsch-Marte

doi:10.1117/12.556779

18 October 2004 Holographic optical tweezers in the Fresnel regime

Alexander Jesacher, Severin Furhapter, Stefan Bernet, Monika Ritsch-Marte

Proceedings Volume 5514, Optical Trapping and Optical Micromanipulation; (2004) https://doi.org/10.1117/12.556779
Event: Optical Science and Technology, the SPIE 49th Annual Meeting, 2004, Denver, Colorado, United States

Abstract

We present a flexible setup for steering of laser tweezers using a high resolution spatial light modulator (SLM). Moving of e.g. trapped cells in the focal plane of the microscope objective is possible without the need for time consuming re-calculation of holograms. Numerous light spots or other modes like the so called "doughnut modes", which carry angular momentum, can be created and controlled independently by "mouse-dragging" the hologram window at the SLM display. In addition, undesired diffraction orders are suppressed using adequately calculated fresnel holograms.

Citation Download Citation

Alexander Jesacher, Severin Furhapter, Stefan Bernet, and Monika Ritsch-Marte "Holographic optical tweezers in the Fresnel regime", Proc. SPIE 5514, Optical Trapping and Optical Micromanipulation, (18 October 2004); https://doi.org/10.1117/12.556779

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