1 September 2004 Brightness of diffracted laser beams
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Beam propagation factor (usually referred to as M2 factor) and brightness of high-order symmetrical Laguerre Gauss (LG) beams that diffract upon a hard-aperture are investigated. We demonstrate that a circular aperture is able to decrease the M2 factor of a high-order symmetrical LG beam and also to enhance its brightness although induced losses.
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Nicolas Passilly, Nicolas Passilly, Gilles Martel, Gilles Martel, Kamel Ait-Ameur, Kamel Ait-Ameur, } "Brightness of diffracted laser beams", Proc. SPIE 5456, Photon Management, (1 September 2004); doi: 10.1117/12.545040; https://doi.org/10.1117/12.545040

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