Orbital angular momentum beams generation from 61 channels coherent beam combining femtosecond digital laser

Opt Lett. 2021 Jan 1;46(1):25-28. doi: 10.1364/OL.405975.

Abstract

We report on the use of a 61 beamlets coherent beam combination femtosecond fiber amplifiers as a digital laser source to generate high-power orbital angular momentum beams. Such an approach opens the path for higher-order non-symmetrical user-defined far field distributions.