High-efficiency grating-waveguide structure for pulse compression of 2 µm high-power lasers. 2026. [PUMA: myown 2µmCPA ReflectivePulseCompressorGrating 2umCPALasers and compoact ResonantDiffraction-GratingWaveguideStructure pulsecompressorgrating UltrafastLaserOptics best]