TY - JOUR AU - R. Shelton AU - S. Foreman AU - L.-S. Ma AU - John Hall AU - Henry Kapteyn AU - Margaret Murnane AU - M. Notcutt AU - Jun Ye AB - With the implementation of a fast-bandwidth servo, along with improved laser construction and associated better passive stability, we have achieved subfemtosecond relative timing jitter between two independent, actively synchronized, mode-locked Ti:sapphire lasers. Timing jitter of 0.58 fs is obtained with a 160-Hz observation bandwidth over several seconds. Within a 2-MHz observation bandwidth, the timing jitter is 1.75 fs. Excellent repeatability and rapid speed in setting an arbitrary time delay between two pulses are also demonstrated. BT - Optics Letters DA - 2002-03 DO - 10.1364/OL.27.000312 N2 - With the implementation of a fast-bandwidth servo, along with improved laser construction and associated better passive stability, we have achieved subfemtosecond relative timing jitter between two independent, actively synchronized, mode-locked Ti:sapphire lasers. Timing jitter of 0.58 fs is obtained with a 160-Hz observation bandwidth over several seconds. Within a 2-MHz observation bandwidth, the timing jitter is 1.75 fs. Excellent repeatability and rapid speed in setting an arbitrary time delay between two pulses are also demonstrated. PY - 2002 EP - 312 T2 - Optics Letters TI - Subfemtosecond timing jitter between two independent, actively synchronized, mode-locked lasers VL - 27 SN - 0146-9592 ER -