期刊
OPTICS EXPRESS
卷 27, 期 8, 页码 11037-11056出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.27.011037
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资金
- Helmholtz Association through DESY
- Center for Free-Electron Laser Science
- European Research Council under the European Union's Seventh Framework Programme (FP/2007-2013) / ERC Grant [609920]
- Cluster of Excellence: The Hamburg Centre for Ultrafast Imaging-Structure, Dynamics and Control of Matter at the Atomic Scale of the Deutsche Forschungsgemeinschaft
We generate temporally modulated optical pulses with a beat frequency of 255 GHz, a duration of 360 ps, and a repetition rate of 2 MHz. The temporal envelope, beat frequency, and repetition rate are computer-programmable. A frequency comb serves as a phase and frequency reference for the locking of two laser lines. The system enables beat frequencies that are adjustable in steps of the frequency comb's repetition rate and exhibit Hz-level precision and accuracy. We expect the optical beat pulses to be well suited for versatile multi-cycle terahertz-wave generation with controllable carrier-envelope phase. We demonstrate that the inherent synchronization of the frequency comb's ultra-short pulse train and the synthesized optical beat (or later the multi-cycle terahertz) pulses enables rapid and phase-sensitive sampling of such pulses. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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