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Laser physics and technology

 

Recent Submissions

  • Malabi, Rudzani; Manoto, Sello L; Ombinda-Lemboumba, Saturin; Maaza, Malik; Mthunzi-Kufa, Patience (Wiley Online Library, 2019-05)
    The introduction of highly active antiretroviral therapy (HAART) has significantly increased life expectancy and improved management of the human immunodeficiency virus-1 (HIV-1) disease globally. This well-established ...
  • Malabi, Rudzani; Lugongolo, Masixole Y; Thobakgale, Setumo L; Manoto, Sello L; Mthunzi-Kufa, Patience; Ombinda-Lemboumba, Saturnin (Wiley, 2019-02)
    Transmission measurement has been perceived as a potential candidate for label-free investigation of biological material. It is a real-time, label-free and non-invasive optical detection technique that has found wide ...
  • Mabena, Chemist M; Roux, FS (American Physical Society, 2019-01)
    The evolution of classical optical fields propagating through atmospheric turbulence is investigated under arbitrary conditions. We use the single-phase screen (SPS) method and the infinitesimal propagation equation (IPE), ...
  • Hendriks, Adriaan J; Ramokolo, Lesiba R; Ngobeni, Christopher M; Moroko, Matome C; Naidoo, Darryl (2018-11)
    Additive manufacturing applications, in areas such as aerospace and medicine, are limited due to the lack of process stability and quality management. In particular, geometrical inaccuracies and the presence of mechanical ...
  • Du Toit, PJW; Burd, SC; Konrad, T; Uys, Hermann (IOP Publishing, 2018-12)
    We present protocols for feedback control and stabilization of a single qubit undergoing Rabi oscillations. Using a hybrid quantum-classical Bayesian estimation technique we simulate monitoring of the dynamical parameter ...
  • Olakanmi, EO; Sepako, M; Morake, J; Hoosain, Shaik E; Pityana, Sisa L (Springer Nature, 2018-12)
    This study examines the dependence of microstructural characteristics, crack frequency and diffusion kinetics of functionally graded (FGM) titanium aluminide coatings reinforced with TiC on laser energy density (LED). ...
  • Bell, Lebohang T; Hasnaoui, A; Ait-Ameur, K; Ngcobo, Sandile (IOP Publishing, 2017-09)
    In this paper, we experimentally demonstrate selective excitation of highradial-order Laguerre-Gaussian (LGp or LGp;0) modes with radial-order, p = 1 - 4 and azimuthal-order, l = 0, using a diode-pump solid-state laser ...
  • 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 ...

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