22 February 2013 Selective excitation of higher-order modes in diode-pumped solid-state laser resonators
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Abstract
In this paper we experimentally demonstrate the intra-cavity generation of selected higher-order Laguerre-Gaussian modes using a simple absorbing ring. First, we show selection of modes of variable radial order, from zero to five, with zero azimuthal order. Second, we select super-positions of azimuthal modes of zero radial order but high azimuthal index, up to eleven. In all cases we demonstrate high mode purity and a gain volume proportional to the order of the mode. Our results suggest a possible route to high-brightness diode-pumped solid-state laser sources.
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A. Forbes, A. Forbes, S. Ngcobo, S. Ngcobo, T. Godin, T. Godin, K. Ait-Ameur, K. Ait-Ameur, "Selective excitation of higher-order modes in diode-pumped solid-state laser resonators", Proc. SPIE 8600, Laser Resonators, Microresonators, and Beam Control XV, 86000Y (22 February 2013); doi: 10.1117/12.2011950; https://doi.org/10.1117/12.2011950
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