TY - JOUR AU - L Ma AU - R Shelton AU - H Kapteyn AU - M Murnane AU - Jun Ye C2 - Physical Review Letters DA - 2021-10-12 15:10:21 LA - en PB - Physical Review Letters PY - 2021 TI - Sub-10-Femtosecond Active Synchronization Between Two Passively Mode-Locked Ti: Sapphire Oscillators ER -