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arXiv · 1912.04624

Generation of coupled orbital angular momentum modes from an optical vortex parametric laser source

Roukuya Mamuti·Shunsuke Goto·Katsuhiko Miyamoto·Takashige Omatsu
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Abstract

We report on the generation of flower (wheel) modes, which manifest coupled orbital angular momentum (OAM) modes, from a vortex pumped optical parametric oscillator simply by employing a pump source with a short temporal coherence time. This vortex oscillator was also developed to generate a further higher-order vortex signal output with $l_s=2-4$ by replacement of the pump source with a longer coherence time. The signal and idler outputs were tuned within wavelength ranges of 745-955 nm and 1200-1855 nm, respectively. The maximum signal output energy of 1.2 mJ was measured with an optical efficiency of 15.6%.

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Roukuya Mamuti, Shunsuke Goto, Katsuhiko Miyamoto, Takashige Omatsu. 2019-12-10. Generation of coupled orbital angular momentum modes from an optical vortex parametric laser source. https://doi.org/10.1364/oe.27.037025

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