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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/3010

Title: Gas lensing in a heated spinning pipe
Authors: Mafusire, C
Forbes, A
Snedden, GC
Mahlase, ACK
Michaelis, MM
Mathuthu, M
Keywords: Laser beam propagation
Turbulent systems
Gas lenses
Aberrations
Issue Date: Jul-2006
Citation: Mafusire, C, Forbes, A, Snedden, GC et al, 2006, Gas lensing in a heated spinning pipe. 51st Annual Conference of the SAIP, University of the Western Cape, South Africa, 3-7 July 2006, pp 1
Abstract: When a heated pipe is rotated, the dynamics of the gas inside exhibit properties reminiscent of a solid-state positive lens. The properties are a result of a parabolic distribution of refractive index in the pipe which is caused by mixing of hot and cold gases. When a laser beam was propagated along the pipe’s axis a focal spot was observed. Experimental data to demonstrate how the lensing properties depend on pipe rotation speed and pipe temperature is presented. A numerical model using the basic equations of a Graded Refractive INdex (GRIN) lens provides a further tool to analyse the propagation of laser beams through this system
Description: 51st Annual Conference of the SAIP, University of the Western Cape, South Africa, 3-7 July 2006
URI: http://hdl.handle.net/10204/3010
Appears in Collections:Laser physics and technology
General science, engineering & technology

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