Abstract
Ultrafast optical pulse trains with very low timing jitter have been widely employed in high resolution photonic analog-to-digital conversion [1], timing distribution systems for next generation X-ray free electron lasers [2], and many other fields. However, the conventional jitter measurement method using high speed photo detectors and mixer usually cannot characterize jitter below 1 fs, due to the excess phase noise in the photo detection process and the mixer’s limited timing resolution. Recently, jitter measurements using balanced optical cross-correlators (BOC), which can precisely extract the timing information without introducing intensity conversion noise, have been demonstrated and attosecond jitter resolution has been achieved [3,4]. In this paper, the jitter performance of two identical commercial femtosecond lasers (Onefive-ORIGAMI) is characterized by using the BOC method. The measurement result indicates an extremely low timing jitter, <100 as, for frequencies greater than 1 kHz. This indicates that this type of lasers is well suited for the development of femtosecond timing distribution systems with sub-fs and eventually even sub-100as precision over km distances, following the work presented in [2].
© 2013 IEEE
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