Two-dimensional-controlled high-order modes and vortex beams from an intracavity mode converter laser

20 Feb 2020 Pan Jing Shen Yijie Wan Zhensong Fu Xing Zhang Hengkang Liu Qiang

We present a novel scheme of structured light laser with an astigmatic mode converter (AMC) as intracavity element, first enabling the generation of Hermite-Gaussian (HG) modes with fully controlled two-dimensional (2D) indices (m,n) and vortex beams carrying orbital angular momentum (OAM) directly from cavity. The 2D tunability was realized by controlling the off-axis displacements of both pump and intracavity AMC... (read more)

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  • OPTICS