All fiber-coupled, long-term stable timing distribution for free-electron lasers with few-femtosecond jitter
نویسندگان
چکیده
We report recent progress made in a complete fiber-optic, high-precision, long-term stable timing distribution system for synchronization of next generation X-ray free-electron lasers. Timing jitter characterization of the master laser shows less than 170-as RMS integrated jitter for frequencies above 10 kHz, limited by the detection noise floor. Timing stabilization of a 3.5-km polarization-maintaining fiber link is successfully achieved with an RMS drift of 3.3 fs over 200 h of operation using all fiber-coupled elements. This all fiber-optic implementation will greatly reduce the complexity of optical alignment in timing distribution systems and improve the overall mechanical and timing stability of the system.
منابع مشابه
Long-term Stable, Large-scale, Optical Timing Distribution Systems with Sub-femtosecond Timing Stability*
Sub-fs X-ray pulse generation in kilometre-scale FEL facilities will require sub-fs long-term timing stability between optical sources over kilometer distances. We present here key developments towards a completely fiber-coupled, pulsed optical timing distribution system capable of delivering such stability. First, we developed a novel 1.2-km dispersion-compensated, polarizationmaintaining fibe...
متن کاملTowards high-performance optical master oscillators for energy recovery linacs
Advanced accelerators as well as 4th generation light sources require extremely precise timing distribution. Energy recovery linacs, for example, require precise timing of the electron bunches reentering the linac in order to minimize the disturbance of the RF amplitude and phase to evade resonant effects on the subsequent accelerated bunch. The timing distribution system has to maintain femtos...
متن کاملFemtosecond Resolution Bunch Arrival Time Monitor
A need for femtosecond resolution beam arrival time measurements has arisen with the transition from manypicosecond-long bunches in ring-based accelerators to a few femtosecond-long bunches in high-gain free-electron lasers. Here we present an electro-optical detection scheme that uses the signal of a beam pick-up to modulate the intensity of a femtosecond laser pulse train. By detecting the en...
متن کاملReduction of timing jitter and intensity noise in normal-dispersion passively mode-locked fiber lasers by narrow band-pass filtering.
Fiber lasers mode-locked with normal cavity dispersion have recently attracted great attention due to large output pulse energy and femtosecond pulse duration. Here we accurately characterized the timing jitter of normal-dispersion fiber lasers using a balanced cross-correlation method. The timing jitter characterization experiments show that the timing jitter of normal-dispersion mode-locked f...
متن کاملFemtosecond resolution timing jitter correction on a TW scale Ti:sapphire laser system for FEL pump-probe experiments.
Intense ultrashort pulse lasers are used for fs resolution pump-probe experiments more and more at large scale facilities, such as free electron lasers (FEL). Measurement of the arrival time of the laser pulses and stabilization to the machine or other sub-systems on the target, is crucial for high time-resolution measurements. In this work we report on a single shot, spectrally resolved, non-c...
متن کامل