Honors College Thesis
 

Applied Computing Techniques for Holographic Optical Tweezers

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https://ir.library.oregonstate.edu/concern/honors_college_theses/6w924d613

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  • Optical tweezers are capable of trapping micron sized particles through the transfer of the momentum of light. These capabilities are expanded through the use of computer controlled holograms for beam shaping. This hologram creation is facilitated through the use of a spatial light modulator, which is a liquid crystal device used to vary the phase of the incident laser light. This thesis presents the computational methods that were implemented to facilitate the modulator interface: manipulating multiple traps in a sample simultaneously, incorporating camera input into the program interface, correcting for optical imperfections in the beam path, and determining the optical characteristics of the modulator. In each case, these methods led to an improvement in the usability of the trapping interface as well as an increase in trap efficiency.
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