Optical-to-microwave synchronization with sub-femtosecond daily drift

Kalaydzhyan, Aram; Peng, Michael Y.; Xin, Ming; Shafak, Kemal; Wang, Wenting; Kärtner, Franz X.

doi:10.1109/eftf.2016.7477846

Cited by 3 publications

(4 citation statements)

References 7 publications

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“…14, a multicolor laser network with daily 0.6-fs timing drift is demonstrated using two-color BOCs [90]. A microwave network is also realized with a total residual phase error of 147 μrad at 10 GHz integrated from 0.1 mHz to 100 MHz [91,92].…”

Section: Fiber-based Remote Timing Synchronizationmentioning

confidence: 98%

“…It can be implemented using the techniques discussed in this paper. For example, timing link stabilization by [47,61,[81][82][83], the synchronization between the microwave reference and master laser, master laser to klystron, linear accelerators, and bunch compressor by [44][45][46][47][48][49][50][51][52]61,88,91,92], master laser to injector laser, seed laser and seed oscillator of the probe laser by [34,35,38,39,47,61,87,90], probe laser seed oscillator to probe laser output by [62][63][64][65][66], and x-ray timing characterization by [58][59][60][61].…”

Section: Fiber-based Remote Timing Synchronizationmentioning

confidence: 99%

See 1 more Smart Citation

Ultra-precise timing and synchronization for large-scale scientific instruments

Xin

Şafak

Kärtner

2018

Optica

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Ultra-precise timing has become a prerequisite for many modern large-scale scientific instruments, and timing precision is a crucial enabling factor to achieve the ultimate goals of those instruments. Here, we review the recent progress in timing technologies, including timing characterization methods among different kinds of sources (optical lasers, microwaves and x-ray pulses), large-scale free-space timing synchronization, and fiber-based timing synchronization. Technical and fundamental limitations of fiber-based timing systems are also discussed to provide future directions.

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Section: Fiber-based Remote Timing Synchronizationmentioning

confidence: 98%

Section: Fiber-based Remote Timing Synchronizationmentioning

confidence: 99%

Ultra-precise timing and synchronization for large-scale scientific instruments

Xin

Şafak

Kärtner

2018

Optica

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“…The optical-to-microwave synchronization can be realized by the BOMPD technique, and local synchronization experiments have been demonstrated in our previous works [35], [58]. However, the non-optimized design of BOMPD limits its local synchronization precision to the femtosecond level, which can only become worse in the remote case.…”

Section: B Free-space-coupled Bompdmentioning

confidence: 99%

“…The optical power is then separated into three paths: signal, bias and reference, with free-space components, such as PBS, half-wave plates and quarter-wave plates. Compared with the fiber-coupled approach [35], [58], this effi-ciently reduces the long-term drifts caused by the environment. Each path contains a free-space delay stage that enables precise phase tuning without backlash, microwave reflection and loss when compared with RF phase shifters.…”

Section: B Free-space-coupled Bompdmentioning

confidence: 99%

Breaking the Femtosecond Barrier in Multi-Kilometer Timing Synchronization Systems

Xin

Şafak

Peng

et al. 2017

IEEE J. Select. Topics Quantum Electron.

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To observe electronic dynamics in atoms, molecules, and condensed matter taking place on an attosecond time scale, next-generation photon science facilities like X-ray free-electron lasers and intense laser beamlines require system-wide attosecondlevel synchronization of dozens of optical and microwave signals up to kilometer distances. Here, we present for the first time a timing synchronization system that can meet the strict timing requirements of such large-scale facilities. We discuss some key enabling technologies including master-laser jitter characterization, local timing synchronization, new designs of attosecond-precision timing/phase detectors, and analyze fundamental noise contributions in nonlinear pulse propagation in fiber links. Finally, a complete 4.7-km laser-microwave network with 950-as timing jitter is realized over tens of hours of continuous operation.

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