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Laser physics and technology

 

News

CSIR Research Space is constantly being developed and populated. Please report any errors to Siphethile Muswelanto. Constructive criticism and suggestions would be welcome.

Recent Submissions

  • Ombinda-Lemboumba, Saturnin; Malabi, Rudzani; Lugongolo, Masixole Y; Thobakgale, Setumo L; Manoto, Sello L; Mthunzi-Kufa, Patience (2017-02)
    Optical trapping has emerged as an essential tool for manipulating single biological material and performing sophisticated spectroscopy analysis on individual cell. The optical trapping technique has been used to grab and ...
  • Naidoo, Darryl; Roux, Filippus S; Dudley, Angela; Litvin, Igor; Piccirillo, B; Marrucci, L; Forbes, A (Nature Publishing Group, 2016-03)
    The angular momentum of light can be described by positions on a higher-order Poincaré sphere, where superpositions of spin and orbital angular momentum states give rise to laser beams that have many applications, from ...
  • Trichili, A; Salem, AB; Dudley, Angela; Zghal, M; Forbes, A (Optical Society of America, 2016-07)
    We experimentally demonstrate an efficient information transmission technique using Laguerre Gaussian (LG) modes. This technique is based on multiplexing and demultiplexing multiple LG modes with different azimuthal and ...
  • Forbes, A; Dudley, Angela; McLaren, M (Optical Society of America, 2016-06)
    Modal decomposition of light has been known for a long time, applied mostly to pattern recognition. With the commercialization of liquid-crystal devices, digital holography as an enabling tool has become accessible to all, ...
  • Sephton, Bereneice; Dudley, Angela; Forbes, A (2016-07)
    Q-plates (QP) have become ubiquitous in experiments requiring the generation of vortex beams since its development in 2006. It consequently follows that it is important to characterize the vortex beams created by this ...
  • Gailele, Lucas M; Dudley, Angela; Ndagano, B; McLaren M, M; Rosales, C; Forbes, A (2016-07)
    The orbital angular momentum (OAM) of light has become the focus of intensive research. Traditional optical communication systems optimize multiplexing in the polarization and the wavelength of light to attain an increase ...
  • Dudley, Angela (2016-07)
    This presentation focuses on the manipulation of structured light. Structured light manipulation allows people to dynamical change the spatial profile of an optical field.
  • Rosales-Guzman, C; Trichili, A; Dudley, Angela; Ndagano, B; Salem, AB; Zghal, Mourad; Forbes, A (SPIE, 2016-09)
    Current optical communication technologies are predicted to face a bandwidth capacity limit in the near future. The nature of the limitation is fundamental rather than technological and is set by nonlinearities in optical ...
  • Masina, Bathusile N; Forbes, Andrew; Mwakikunga, Bonex W; Bodkin, R (2011-05)
    At present it is known that diamond tools degrade with time as it is normally used at high temperatures. One of the questions the authors like to answer in this study is whether thermally induced problems in diamond tool ...
  • Bell, Teboho; Naidoo, Darryl; Forbes, Andrew (2014-07)
    The effects of a temperature gradient in a laser crystal in an end-pumped configuration in a solid-state laser resonator results in thermally induced aberrations. Of particular interest we measure the thermally induced ...
  • Sharma, Ameeth; Singh, Ann; Roberts, Ted; Ramokolo, Rocky; Van der Westhuizen, Corrie (CSIR, 2016-11)
    The optical coherence technique (OCT) technique, which was demonstrated by Fercher and Huang in the early 90s, has made significant strides in bio-medical diagnostic applications in the fields of dermatology, dentistry and ...
  • Sharma, Ameeth (South African Institute of Physics (SAIP), 2016-07)
    Light based techniques continue to gain momentum in different spheres of diagnostic and therapeutic applications as a result of their non-invasive, noncontact properties. One such technique is Optical Coherence tomography ...
  • Tlotleng, Monnamme; Masina, Bathusile; Pityana, Sisa L (Elsevier, 2017-01)
    The use of titanium aluminides as high temperature materials in the aerospace and automobile industries is becoming a reality since their early research and development in 1955. Their mechanical properties at elevated ...
  • Trichili, A; Rosales-Guzmán, C; Dudley, Angela; Ndagano, B; Salem, AB; Zghal, M; Forbes, A (Macmillan Publishers Limited, part of Springer Nature, 2016-06)
    Mode division multiplexing (MDM) is mooted as a technology to address future bandwidth issues, and has been successfully demonstrated in free space using spatial modes with orbital angular momentum (OAM). To further increase ...
  • Bell, Teboho; Ngcobo, Sandile (OMICS International, 2017-01)
    In this paper, we use a digital laser to generate high-radial-order Laguerre-Gaussian, LGp,0 modes by loading digital holograms on a phase-only spatial light modulator that act as an end mirror of a diode-end-pumped laser ...
  • Baloyi, N; Tlotleng, Monname; Meacock, Christopher; Pityana, Sisa; Majumdar, JD (Rapid Product Development Association of South Africa (RAPDASA), 2012-11)
    Laser coating is an advanced coating technology for improving the surface properties of various components. These coatings are extremely dense, crack-free and have non-porous microstructures. Coatings archived by laser ...
  • Moller, Hein; Burger, Herman; Tlotleng, Monname; Yadroitsev, I; Makoana, Washington (SUNJOurnals, 2016-11)
    In Selective Laser Melting, the initial units produced are single tracks that overlap to create a single layer; from the sequence of layers, a 3D object is manufactured. The properties of the parts produced by SLM depend ...
  • Masina, BN; Lafane, S; Wu, L; Kerdja, T; Abdelli-Messaci, S; Forbes, A (2013-10)
    The main objective of this study is to fully optimise the synthesis of vanadium oxide nanostructures using pulsed laser deposition. We will attempt to realise this by studying the mechanism of the plasma formation and ...
  • Popoola, API; Phume, L; Pityana, S; Aigbodion, VS (Elsevier, 2016-01)
    Ti6Al4V alloy has been widely used for medical implants due to good mechanical properties. For permanent implant applications Ti6Al4V alloy has shown to have low corrosion and wear resistance. Based on these the development ...
  • Erinosho, MF; Akinlabi, ET; Pityana, S (Old City Publishing, 2016)
    This paper presents the explorations conducted on the evolving microstructures and the dry sliding wear of the laser deposited Ti6Al4V/Cu composites. The laser powers between 1300 W and 1600 W; scanning speeds between 0.30 ...

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