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Laser physics and technology

 

Recent Submissions

  • Gailele, Lucas M; Dudley, Angela L; Forbes, A (SPIE, 2018-09)
    Current communication systems make use of polarization and wavelength multiplexing to increase transmission rates. To offer a further improvement, Orbital Angular Momentum (OAM) modes (or Laguerre-Gaussian modes) provide ...
  • Malabi, Rudzani; Manoto, Sello L; Ombinda-Lemboumba, Saturnin; Maaza, M; Mthunzi-Kufa, Patience (OSA Publishing, 2018-09)
    Surface plasmon resonance is an optical sensing technique with the ability to monitor molecular binding in real time for biological and chemical sensing applications. This study characterised, optimised and detected ...
  • Uys, Hermann; Bassa, H; Du Toit, P; Ghosh, S; Konrad, T (American Physical Society, 2018-06)
    Measurement combined with feedback that aims to restore a presumed premeasurement quantum state will yield this state after a few measurement-feedback cycles even if the actual state of the system initially had no resemblance ...
  • Du Plessis, A; Sperling, P; Beerlink, A; Tshabalala, Lerato C; Hoosain, Shaik E; Mathe, Ntombizodwa R; Le Roux, SG (Elsevier, 2018-09)
    MicroCT is best known for its ability to detect and quantify porosity or defects, and to visualize its 3D distribution. However, it is also possible to obtain accurate volumetric measurements from parts – this can be used ...
  • Thobakgale, Setumo L; Manoto, Sello L; Ombinda-Lemboumba, Saturnin; Maaza, M; Mthunzi-Kufa, Patience (SPIE, 2018-01)
    In tissue engineering research, stem cells have been used as starting material in the synthesis of mammalian cells for the treatment of various cell based diseases. This is done by manipulating the DNA content of the cells ...
  • Lugongolo, Masixole Y; Ombinda-Lemboumba, Saturnin; Noto, LN; Maaza, M; Mthunzi-Kufa, Patience (SPIE, 2018-02)
    The human immunodeficiency virus-1 (HIV-1) is currently detected using conventional qualitative and quantitative tests to determine the presence or absence of HIV in blood samples. However, the approach of these tests ...
  • Sharma, Ameeth; Singh, Ann; Roberts, Ted; Ramokolo, Lesiba R; Strauss, Hencharl J (The South African Institute of Physics, 2016-07)
    Light-based techniques continue to gain momentum in different spheres of diagnostic and therapeutic applications due to their non-invasive, non-contact properties. One such technique is Optical Coherence tomography (OCT). ...
  • Lück-Vogel, Melanie (EE Publishers, 2018-04)
    This article provides guidance to technical and non-technical coastal practitioner regarding the required precision of airborne lidar data for the typical coastal applications, output formats and value-added products. It ...
  • Tamsaout, T; Kheloufi, K; Amara, EH; Arthur, Nana KK; Pityana, Sisa L (Southern African Institute of Industrial Engineering, 2017-11)
    A theoretical approach based on a numerical simulation using experimental data is proposed as a contribution to the study of laser-based additive manufacturing by direct energy deposition (DED). The aim is to simulate the ...
  • Jacobs, Cobus; Koen, Wayne S (SAIP, 2016-07)
    We present a single-element plane-wave laser rate equation model and its implementation as a graphical laser simulation library using Matlab Simulink. Simulink’s graphical interface and vector capabilities provide a unique ...
  • Mabena, Chemist M; Roux, FS (American Physical Society, 2017-11)
    A method is proposed to characterize a high-dimensional quantum channel with the aid of classical light. It uses a single nonseparable input optical field that contains correlations between spatial modes and wavelength to ...
  • Sephton, Bereneice; Dudley, Angela L; Forbes, A (ASSAf, 2017-12)
    Bereneice Sephton, Angela Dudley and Andrew Forbes explain the importance of random motion. So, what exactly is random motion? The answer can be dated back to 1827 when a botanist, Robert Brown, noted the movement of pollen ...
  • Tlotleng, Monnamme; Pityana, Sisa L (Rapid Product Development Association of South Africa (RAPDASA), 2017-11)
    Titanium aluminides (TiAl) are interesting intermetallic materials to study due to their enhanced high temperature and light weight properties. They are necessary as structural materials, but brittle to form with conventional ...
  • Sono, Tleyane J; Riziotis, CR; Maili, S; Eason, WE (IOP Publishing Ltd, 2017-08)
    Fabrication capabilities of high optical quality hexagonal superstructures by chemical etching of inverted ferroelectric domains in lithium niobate platform suggests a route for efficient implementation of compact hexagonal ...
  • Sephton, Bereneice C; Dudley, Angela L (SPIE, 2017-08)
    Beams carrying orbital angular momentum (OAM) are ubiquitous in many experiments carried out today and cover a wide range of research, from surface microstructure processing to optical tweezers and communications. It follows ...
  • Sephton, Bereneice C; Dudley, Angela L; Forbes, A (SPIE, 2017-08)
    In the avid search for means to increase computational power in comparison to that which is currently available, quantum walks (QWs) have become a promising option with derived quantum algorithms providing an associated ...
  • Thobakgale, Setumo L; Manoto, Sello L; Ombinda-Lemboumba, Saturnin; Maaza, M; Mthunzi-Kufa, Patience (SPIE, 2017-01)
    Embryonic stem cells have great promise in regenerative medicine because of their ability to self-renew and differentiate into various cell types. Delivery of therapeutic genes into cells has already been achieved using ...
  • Thobakgale, Setumo L; Manoto, Sello L; Ombinda-Lemboumba, Saturnin; Maaza, M; Mthunzi-Kufa, Patience (SPIE, 2017-02)
    Cellular manipulation by delivery of molecules into cells has been applied extensively in tissue engineering research for medical applications. The different molecular delivery techniques used range from viral and chemical ...
  • Thobakgale, Lebogang (SPIE Photonics West 2017 Conference, 2017-01)
    This presentation is about the photo-transfection of mouse embryonic stem cells with plasmid DNA using femtosecond laser pulses. It outlines the background on embryonic stem cells (ES) and phototransfection.
  • Mvelase, GM; Gräbe, PJ; Anochie-Boateng, Joseph (Elsevier, 2017-06)
    The heavy haul coal line of the South African railway network is facing a problem where ballast particles are becoming rounded, negatively affecting performance and thus leading to shorter planned maintenance cycles. This ...

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