Multimode optical fiber beam-by-beam cleanup
arXiv:2205.13385 · doi:10.1109/JLT.2023.3239385
Abstract
We introduce and experimentally demonstrate the concept of all-optical beam switching in graded-index multimode optical fibers. Nonlinear coupling between orthogonally polarized seed and signal beams permits to control the spatial beam quality at the fiber output. Remarkably, we show that even a weak few-mode control beam may substantially enhance the quality of an intense, highly multimode signal beam. We propose a simple geometrical representation of the beam switching operation, whose validity is quantitatively confirmed by the experimental mode decomposition of the output beam. All-optical switching of multimode beams may find important applications in high-power beam delivery and fiber lasers.
References in corpus (5)
- All-optical switching in rubidium vapor
- Thermodynamic theory of highly multimoded nonlinear optical systems
- Single mode output by controlling the spatiotemporal nonlinearities in mode-locked femtosecond multimode fiber lasers
- Statistical mechanics of beam self-cleaning in GRIN multimode optical fibers
- Dramatic acceleration of wave condensation mediated by disorder in multimode fibers