Jitter reduction of two synchronized picosecond mode-locked lasers using balanced cross-correlator with two-photon detectors

Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
Applied Physics Letters (Impact Factor: 3.52). 12/2006; DOI: 10.1063/1.2374803
Source: IEEE Xplore

ABSTRACT The authors have developed a highly synchronized picosecond mode-locked laser system. A balanced cross-correlator using two-photon detectors was employed to observe femtosecond order timing jitter between two picosecond lasers ( 1.26 fs with 150 Hz bandwidth and 7.14 fs with 1 kHz bandwidth), and a signal from the correlator was used as a feedback control signal to reduce the timing jitter. The timing jitter between the two lasers was reduced to 8 fs through a low-pass filter with 150 Hz bandwidth.