期刊
OPTICS EXPRESS
卷 21, 期 23, 页码 28987-28999出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.21.028987
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The long-term stability of optical parametric chirped-pulse amplifiers is hindered by thermal path length drifts affecting the temporal pump-to-signal overlap. A kilowatt-pumped burst amplifier is presented delivering broadband 1.4 mJ pulses with a spectral bandwidth supporting sub-7 fs pulse duration. Active temporal overlap control can be achieved by feedback of optical timing signals from cross-correlation or spectral measurements. Using a balanced optical cross-correlator, we achieve a pump-to-signal synchronization with a residual jitter of only (46 +/- 2) fs rms. Additionally, we propose passive pump-to-signal stabilization with an intrinsic jitter of (7.0 +/- 0.5) fs rms using white-light continuum generation. (C) 2013 Optical Society of America
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