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Characterisation of a spinning pipe gas lens using a Shack–Hartmann wavefront sensor

Author: Mafusire, C ; Forbes, A ; Snedden, Glen C ; Michaelis, MM Date: 2007 A heated horizontal spinning pipe causes gases inside it to assume dynamics resulting in a graded index lens – a spinning pipe gas lens (SPGL). A CFD model is presented which shows that gas exchanges of the SPGL with the surroundings resulting ... Read more
Computational fluid dynamics model of the spinning pipe gas lens

Author: Mafusire, C ; Forbes, A ; Snedden, Glen C Date: Aug 2010 When a metal horizontal pipe is heated and spun along its axis, a graded refractive index distribution is generated which is can be used as a lens, thus its name, the spinning pipe gas lens (SPGL). Previous experimental results of its performance ... Read more
Optical aberrations in a spinning pipe gas lens

Author: Mafusire, C ; Forbes, A ; Michaelis, MM ; Snedden, Glen C Date: Jun 2008 If a heated pipe is rotated about its axis, a density gradient is formed which results in the pipe acting as a graded index lens. In this study the authors revisit the concept of a spinning pipe gas lens and for the first time analyse both ... Read more
Optical turbulence in a spinning pipe gas lens

Author: Mafusire, C ; Forbes, A Date: Jul 2009 The researchers have managed to do quantitative analysis of ‘controlled’ turbulence. The researchers could control the degree of turbulence by controlling the rotation speed and wall temperature of the spinning pipe gas lens. The researchers ... Read more
Spinning pipe gas lens revisited

Author: Mafusire, C ; Forbes, A ; Snedden, Glen C ; Michaelis, MM Date: 2008 The graded index (GRIN-like) medium generated by gas inside a heated steel pipe when rotated about its longitudinal axis has the ability to focus a laser beam. While the effective focal length of such a system has previously been studied, ... Read more

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Browsing by Subject "Spinning pipe gas lens"

Browsing by Subject "Spinning pipe gas lens"

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