TY - JOUR AU - L.-S. Ma AU - R. Shelton AU - Henry Kapteyn AU - Margaret Murnane AU - Jun Ye BT - Physical Review A DA - 2001-07 DO - 10.1103/PhysRevA.64.021802 PY - 2001 T2 - Physical Review A TI - Sub-10-femtosecond active synchronization of two passively mode-locked Ti:sapphire oscillators VL - 64 SN - 1050-2947 ER -