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- W4313430113 abstract "In this study, we numerically simulate the evolution of the orbital angular momentum (OAM) spectrum of a vortex laser beam in the optical parametric chirped pulse amplification (OPCPA) process, which is an effective technical method to realize ultra-intense and ultra-short vortex laser amplification. The results show that the proportion of the vortex laser beam with 100% topological charge (TC) of 1 decreases to 97.44% with the enhancement of the saturation amplification after amplification by a 15 mm length LBO pumped by a 526.5 nm laser with a pump intensity of 1.74 GW/cm2. Conversely, the beams with other topological charges generate and increase with the amplification. The simulation results are consistent with our previous experimental results. Meanwhile, compared with non-collinear OPCPA, collinear OPCPA can maintain well the proportion of TC [Formula: see text]." @default.
- W4313430113 created "2023-01-06" @default.
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- W4313430113 date "2023-01-02" @default.
- W4313430113 modified "2023-10-14" @default.
- W4313430113 title "Evolution of orbital angular momentum spectrum of broadband Laguerre–Gaussian beam in OPCPA process" @default.
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- W4313430113 doi "https://doi.org/10.1038/s41598-022-27148-0" @default.
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