Real-time reconfigurable counter-propagating beam-traps

Sandeep Tauro, Andrew Rafael Bañas, Darwin Palima, Jesper Glückstad

    Research output: Contribution to journalConference articleResearchpeer-review

    Abstract

    We present a versatile technique that enhances the axial stability and range in counter-propagating (CP) beam-geometry optical traps. It is based on computer vision to track objects in unison with software implementation of feedback to stabilize particles. In this paper, we experimentally demonstrate the application of this technique by real-time rapid repositioning coupled with a strongly enhanced axial trapping for a plurality of particles of varying sizes. Also exhibited is an interesting feature of this approach in its ability to automatically adapt and trap objects of varying dimensions which simulates biosamples. By working on differences rather than absolute values, this feedback based technique makes CPtrapping nullify many of the commonly encountered pertubations such as fluctuations in the laser power, vibrations due to mechanical instabilities and other distortions emphasizing its experimental versatility.
    Original languageEnglish
    JournalProceedings of SPIE - The International Society for Optical Engineering
    Volume7762
    Pages (from-to)77620T
    ISSN0277-786X
    DOIs
    Publication statusPublished - 2010
    EventSPIE Optics and Photonics Annual Meeting: Optical Trapping and Optical Micromanipulation VII - San Diego, CA, United States
    Duration: 1 Aug 20105 Aug 2010

    Conference

    ConferenceSPIE Optics and Photonics Annual Meeting
    Country/TerritoryUnited States
    CitySan Diego, CA
    Period01/08/201005/08/2010

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