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Woei Ming Lee PhD thesis.pdf14.88 MBAdobe PDFView/Open
Title: Optical trapping: optical interferometric metrology and nanophotonics
Authors: Lee, Woei Ming
Supervisors: Dholakia, Kishan
Keywords: Optical trapping
Interferometric metrology
Optical force spectroscopy
Fluorescence microscopy imaging
Nanoparticle-cell interaction
Optical nonlinearity
Wavefront engineering
Issue Date: 25-Jun-2010
Abstract: The two main themes in this thesis are the implementation of interference methods with optically trapped particles for measurements of position and optical phase (optical interferometric metrology) and the optical manipulation of nanoparticles for studies in the assembly of nanostructures, nanoscale heating and nonlinear optics (nanophotonics). The first part of the thesis (chapter 1, 2) provides an introductory overview to optical trapping and describes the basic experimental instrument used in the thesis respectively. The second part of the thesis (chapters 3 to 5) investigates the use of optical interferometric patterns of the diffracting light fields from optically trapped microparticles for three types of measurements: calibrating particle positions in an optical trap, determining the stiffness of an optical trap and measuring the change in phase or coherence of a given light field. The third part of the thesis (chapters 6 to 8) studies the interactions between optical traps and nanoparticles in three separate experiments: the optical manipulation of dielectric enhanced semiconductor nanoparticles, heating of optically trapped gold nanoparticles and collective optical response from an ensemble of optically trapped dielectric nanoparticles.
Type: Thesis
Publisher: University of St Andrews
Appears in Collections:Physics & Astronomy Theses

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