Multi-mode spatiotemporal dynamics control of fibers boosts power/ speed by individually controlling many different laser shapes at once

https://phys.org/news/2025-08-laser-technique-boosts-power-individually.html#google_vignette

"velocity mismatch causing laser pulses to spread out/ separate in time/ space prevents stable, high-power pulses... overcome using mode multiplexer/ demultiplexer separating mixed beam inside multimode fiber into individual channels, 1 for each mode, enabling dispersion management for each mode independently by adding precise lengths of compensating fiber to each channel... recombine with multiplexer into single beam... beam-shaping capabilities... attosecond light sources, precision fabrication, nonlinear microscopy"