Using high-bandwidth feedback, we have synchronized the pulse train from a mode-locked semiconductor laser to an external optical atomic clock signal and achieved what is to our knowledge the lowest timing jitter to date (22 fs, integrated from 1 Hz to 100 MHz) for such devices. The performance is limited by the intrinsic noise of the phase detector used for timing-jitter measurement. We expect such a highly stable device to play an important role in fiber-network-based precise time/frequency distribution.
© 2003 Optical Society of America
(120.3930) Instrumentation, measurement, and metrology : Metrological instrumentation
(140.5960) Lasers and laser optics : Semiconductor lasers
(320.7160) Ultrafast optics : Ultrafast technology
David J. Jones, Kevin W. Holman, Mark Notcutt, Jun Ye, Juhi Chandalia, Leaf A. Jiang, Erich P. Ippen, and H. Yokoyama, "Ultralow-jitter, 1550-nm mode-locked semiconductor laser synchronized to a visible o ptical frequency standard," Opt. Lett. 28, 813-815 (2003)