201 W picosecond green laser using a mode-locked fiber laser driven cryogenic Yb:YAG amplifier system Kowalewski, Katie ; Zembek, Jason ; Envid, Victoria ; Brown, David C. Abstract Publication: Optics Letters Pub Date: November 2012 DOI: 10.1364/OL.37.004633 Bibcode: 2012OptL...37.4633K