Physics & Astronomy: Recent submissions

Now showing items 101-105 of 659

    • Theory of transition metal impurities in semiconductors 

      O'Neill, A. G. (University of St Andrews, 1984) - Thesis
      A new version of crystal field theory is presented in this thesis for transition metal impurities in tetrahedral or octahedral environments. Like the conventional theory it contains only three disposable parameters. Covalency ...

    • Infrared characterisation of semiconductors 

      Thorley, Antony M. (University of St Andrews, 1990) - Thesis
      A theoretical and experimental investigation of the optical properties of ion-implanted silicon over the wavelength range 2 μm to 3 cm has been performed. Twelve samples were supplied by Hughes Microelectronics Ltd. and a ...

    • Novel optical micromanipulation techniques and applications of violet diode lasers 

      Carruthers, Antonia E. (University of St Andrews, 2005) - Thesis
      In this thesis, optical micro-manipulation experiments are described using laser sources spanning the wavelength region 1064 nm to 410 nm. Optical guiding is studied at near infrared wavelengths (780 nm) for comparison of ...

    • Optical manipulation and the angular momentum of light 

      O'Neil, Anna T. (University of St Andrews, 2002) - Thesis
      This thesis consists primarily of an investigation into the action of laser light on particles held within optical tweezers. I present work on a dynamic method of measuring both the axial and lateral efficiencies of optical ...

    • The frequency stabilization of gas lasers 

      Wallard, Andrew John (University of St Andrews, 1972) - Thesis
      This thesis contains a description of the design and development of a visible helium-neon laser stabilized to an absorption transition in an intracavity cell of iodine vapour. Two methods of frequency locking the laser ...