Author:Mafusire, CDate:Sep 2010A model is used to calculate the beam quality factor of a laser beam from Zernike coefficients. It is tested by programming aberration coefficients on a laser beam and measuring the beam quality using a Shack-Hartmann wavefront sensor. The ...Read more
Author:Vhengani, L; Lubbe, M; Griffith, D; Lysko, MDate:Oct 2010The success or failure of any earth observation mission depends on the quality of its data. Data quality is assessed by determining the radiometric, spatial, spectral and geometric fidelity of the satellite sensor. The process is termed calval. ...Read more
Author:Molukanele, P; Du Plessis, A; Roberts, T; Botha, L; Khati, M; Campos, WDate:Sep 2010Potential for the selective deactivation of viruses while leaving the sensitive material such as the host cell unharmed was studied using a femtosecond laser system, and preliminary results are reported.Read more
Author:Molukanele, P; Du Plessis, A; Roberts, T; Botha, L; Khati, M; Campos, WDate:Sep 2011Potential for the selective deactivation of viruses while leaving the sensitive material such as the host cell unharmed was studied using a femtosecond laser system, and preliminary results are reported.Read more