Abstract
We propose and demonstrate experimentally a method for the sensitive measurement of the relative timing jitter of two mode-locked lasers, which can be either free-running or timing-synchronized to a common reference oscillator. The method is based on the indirect comparison of the phases of two photodetector outputs, using a microwave oscillator, the noise of which does not affect the results, electronic mixers, and a sampling oscilloscope. We carefully analyze and experimentally demonstrate the potential of this method. Compared to phase detector methods, it has a broader scope of applications and a lower sensitivity to intensity noise. We also obtained data on the coupling of intensity to timing noise in photodetectors.
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42.50.Lc; 42.60.Fc
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Paschotta, R., Rudin, B., Schlatter, A. et al. Relative timing jitter measurements with an indirect phase comparison method. Appl. Phys. B 80, 185–192 (2005). https://doi.org/10.1007/s00340-004-1704-2
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DOI: https://doi.org/10.1007/s00340-004-1704-2