• Login
    View Item 
    •   Athenaeum Home
    • University of Georgia Theses and Dissertations
    • University of Georgia Theses and Dissertations
    • View Item
    •   Athenaeum Home
    • University of Georgia Theses and Dissertations
    • University of Georgia Theses and Dissertations
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Binary wavefront optimization for focusing light through scattering media

    Thumbnail
    Date
    2014-08
    Author
    Zhang, Xiaolong
    Metadata
    Show full item record
    Abstract
    Random light scattering in inhomogeneous media causes strong wavefront aberrations and makes it impossible to focus light. Many wavefront correction techniques have been recently demonstrated to control light propagation in these media. Phase modulation with a spatial light modulator (SLM) and digital light modulator (DMD) have been used to correct the aberrations. And real-time wavefront optimization algorithms have also been developed based on different techniques. In this study, we demonstrate two new techniques, using binary wavefront optimization to focus light through scattering media. We have developed a genetic algorithm and a transmission matrix algorithm for focusing light with binary wavefront optimization. We apply these methods to binary amplitude modulation with both a spatial light modulator and a digital light modulator. With the genetic algorithm, we achieve a focal spot 105 times stronger than the initial average intensity dividing the wavefront into 1024 segments, 64.5% of the theoretical maximum. With the transmission matrix algorithm, we used 6144 segments to achieve a focal spot enhancement of 532, 54.4% of the theoretical maximum.
    URI
    http://purl.galileo.usg.edu/uga_etd/zhang_xiaolong_201408_ms
    http://hdl.handle.net/10724/31350
    Collections
    • University of Georgia Theses and Dissertations

    About Athenaeum | Contact Us | Send Feedback
     

     

    Browse

    All of AthenaeumCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    LoginRegister

    About Athenaeum | Contact Us | Send Feedback