30 W Thin Yb:YAG Rod Chirped Pulse Amplifier with High Output Beam Quality

Double-pass Yb:YAG single crystal fiber CPA seeded with fiber laser pulses of > 350 mW power at 21 - 500 kHz provides ~ 30 W output of M2 < 1.13 in dual-end-pumped configuration with high brightness laser diodes of 120 W overall power.