Litvin, Igor ACollet, Oliver JP2018-10-162018-10-162015-03Litvin, I.A. and Collet, O.J.P. 2015. Digital generation of shape-invariant Bessel-like beams. Optics Express, vol. 23(6): 7312-73191094-4087https://doi.org/10.1364/OE.23.007312https://www.osapublishing.org/oe/abstract.cfm?uri=oe-23-6-7312http://hdl.handle.net/10204/10472Copyright: 2015 OSA. Article published in Optics Express: https://doi.org/10.1364/OE.23.007312We propose a new technique for laser beam shaping namely the reshaping of the laser beam into a desirable beam profile by the use of a laser amplifier with a pump beam that has a modified intensity profile. We developed the analytical formula which describes the transformation of the seed beam into the desired beam profile in the amplifiers small signal regime. In the case were high pump power saturated the laser crystal we have shown the method of reshaping of the seed beam into desirable beam by a numerically obtained pump intensity profile. The method can also be extended for shaped seed beams with fixed profile pump.enLaser amplifiersLaser beam shapingDigital generation of shape-invariant Bessel-like beamsArticleLitvin, I. A., & Collet, O. J. (2015). Digital generation of shape-invariant Bessel-like beams. http://hdl.handle.net/10204/10472Litvin, Igor A, and Oliver JP Collet "Digital generation of shape-invariant Bessel-like beams." (2015) http://hdl.handle.net/10204/10472Litvin IA, Collet OJ. Digital generation of shape-invariant Bessel-like beams. 2015; http://hdl.handle.net/10204/10472.TY - Article AU - Litvin, Igor A AU - Collet, Oliver JP AB - We propose a new technique for laser beam shaping namely the reshaping of the laser beam into a desirable beam profile by the use of a laser amplifier with a pump beam that has a modified intensity profile. We developed the analytical formula which describes the transformation of the seed beam into the desired beam profile in the amplifiers small signal regime. In the case were high pump power saturated the laser crystal we have shown the method of reshaping of the seed beam into desirable beam by a numerically obtained pump intensity profile. The method can also be extended for shaped seed beams with fixed profile pump. DA - 2015-03 DB - ResearchSpace DP - CSIR KW - Laser amplifiers KW - Laser beam shaping LK - https://researchspace.csir.co.za PY - 2015 SM - 1094-4087 T1 - Digital generation of shape-invariant Bessel-like beams TI - Digital generation of shape-invariant Bessel-like beams UR - http://hdl.handle.net/10204/10472 ER -