Karunwi, Olukayode

Smith, Ryan

Spalding, Faculty Advisor, Gabriel

Digital Commons @ Illinois Wesleyan University

Illinois Wesleyan UniversityDigital Commons @ IWUJohn Wesley Powell Student ResearchConference 2004, 15th Annual JWP ConferenceApr 17th, 9:00 AM - 10:00 AMAdaptive Optics for Dynamic Optical TrapsOlukayode KarunwiIllinois Wesleyan UniversityRyan SmithIllinois Wesleyan UniversityGabriel Spalding, Faculty AdvisorIllinois Wesleyan UniversityFollow this and additional works at: http://digitalcommons.iwu.edu/jwprcThis Event is brought to you for free and open access by The Ames Library, the Andrew W. Mellon Center for Curricular and FacultyDevelopment, the Office of the Provost and the Office of the President. It has been accepted for inclusion in Digital Commons @ IWU bythe faculty at Illinois Wesleyan University. For more information, please contact digitalcommons@iwu.edu.©Copyright is owned by the author of this document.Olukayode Karunwi; Ryan Smith; and Gabriel Spalding, Faculty Advisor, "Adaptive Optics for Dynamic Optical Traps"(April 17, 2004). John Wesley Powell Student Research Conference. Paper 16.http://digitalcommons.iwu.edu/jwprc/2004/posters/16THE JOHN WESLEY POWELL STUDENT RESEARCH CONFERENCE - APRIL 2004 Poster Presentation P25 ADAPTIVE OPTICS FOR DYNAMIC OPTICAL TRAPS Olukayode Karunwi, Ryan Smith and Gabriel Spalding* Department of Physics, Illinois Wesleyan University Holographic Optical Tweezers were first demonstrated by Fournier, et all , using a commercial hologram. A complete recipe for making tailored, planar arrays of optical traps using Diffractive Optical Elements (DOE) was laid out in the IWU - Univ. of Chicago collaboration, "Computer-Generated Holographic Optical Tweezer Arrays.,,2 While this original "HOT" recipe dealt with two-dimensional arrays, several generalizations have been demonstrated which extend the basic method to three­dimensions3, 4 . That said, three-dimensional studies remain in their infancy. Furthermore, even for lower-dimensional arrays, both errors in the DOE and aberrations in the optical system can compromise trap performance. We will report on our progress in using a Programmable Phase Modulator (an optically addressable DOE) to provide a reconfigurable, self-calibrating DOE, and to correct for aberrations. Our approach involves modifying the "HOT" algorithm in order to provide a feedback mechanism between the input optical array and output optical array. 2 4 J.-M. R. Fournier, M. M. Bums, and J. A. Golovchenko, Proceedings SPIE ­The International Society for Optical Engineering 2406, 1 0 1  ( 1995). E. R. Dufresne, G. C. Spalding, M. T. Dearing, et al., Review of Scientific Instruments 72, 1 8 1 0  (2001) .  H. Melville, G.  F.  Milne, G.  C .  Spalding, et aI. ,  Optics Express (2003). J. Leach, G. Sinclair, P.  Jordan, et al. ,  Optics Express 12, 220 (2004). 

Adaptive Optics for Dynamic Optical Traps

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Adaptive Optics for Dynamic Optical Traps

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