Multi-mJ, kHz, 2.1-μm OPCPA for high-flux soft X-ray high-harmonic radiation
We report on a multi-mJ 2.1-μm OPCPA system operating at a 1-kHz repetition rate, pumped by a picosecond cryogenic Yb:YAG pump laser, and the phase-matched high-flux high-harmonic soft X-ray generation.