PUMA publications for /tag/ReflectivePulseCompressorGratingWed Apr 22 16:37:31 CEST 2026April High-efficiency grating-waveguide structure for pulse compression of 2 µm high-power lasers20262umCPALasers ReflectivePulseCompressorGrating UltrafastLaserOptics myown We present a high-efficiency resonant diffraction grating-waveguide structure (RD-GWS) designed as a pulse compressor grating for high-power chirped-pulse amplification (CPA) laser systems operating at 2 µm wavelengths. The design achieves > 99 % theoretical diffraction efficiency across a 42 nm bandwidth centered at 2050nm and demonstrates good tolerance to fabrication variations. The estimated theoretical laser-induced damage threshold exceeds 0.75 J/cm² for 500 fs pulses. The fabricated sample achieved a measured diffraction efficiency of 97%, which, to the best of our knowledge, is the highest value reported to date for a 2 µm pulse compressor grating. These results demonstrate the potential of the RD-GWS concept for high-efficiency, damage-resistant pulse compression in next-generation high-power mid-infrared CPA systems.Wed Apr 22 16:37:31 CEST 2026High-efficiency grating-waveguide structure for pulse compression of 2 µm high-power lasers2026myown 2µmCPA ReflectivePulseCompressorGrating 2umCPALasers and compoact ResonantDiffraction-GratingWaveguideStructure pulsecompressorgrating UltrafastLaserOptics best ReflectivePulseCompressorGratingCommunity for tag(s) ReflectivePulseCompressorGrating