Browsing University of Galway Theses (PhD Theses) by Subject "Optics"

Now showing items 1-6 of 6

    • Depth of field reduction for miniature-camera imaging 

      Cognard, Timothée E. (NUI Galway, 2020-08-25)
      This thesis investigates the reduction of depth-of- field for miniature camera systems, such as the ones embedded in smartphones. The work on digital shallow depth-of- field is already mature and implemented in most modern ...

    • Detection of faint exoplanets in multispectral data 

      Hanley, Kenneth (NUI Galway, 2019-04-15)
      The detection of extrasolar planets is extremely difficult due to their extreme faintness and proximity to their parent stars. Direct, ground-based detection is particularly challenging and despite the incredible contrast ...

    • Eye modelling for personalised intraocular lens design 

      Sheehan, Matthew (2012-08-03)
      Approximately 20 million cataract operations are performed per year worldwide, routinely removing the opaque cataractous lens and implanting an artificial intraocular lens (IOL). Modern technologies used to treat cataract ...

    • A fibre based quad-cell wavefront sensor for high speed adaptive optics 

      Mackey, David (2014-05-20)
      The genesis of this thesis came out of the difficulties encountered when trying to apply adaptive optics correction to optical fields that contain scintillation (specklelike amplitude fluctuations). These scintillated ...

    • The Optical Signatures of Magnetospheric Phenomena at the End of the Main Sequence and Beyond 

      Harding, Leon Karl (2012-10-22)
      In recent years, very low mass stars and brown dwarfs, together known as ultracool dwarfs, have unexpectedly been detected as a radio transient source, where periodic bursts of radio emission were also discovered. Periodicity ...

    • Shaping the focal field in three dimensions using polarisation and phase 

      Kenny, Fiona (2013-05-27)
      Vectorial polarimetry is a novel high-resolution microscopy technique with potential applications in the characterisation of nano-materials, sub-diffraction limit microscopy, and single molecule imaging. Previous work had ...