view article
Figure 1
Schematic diagram of the synchronization system using a balanced optical-microwave phase detector (BOMPD). The phase-error signal between the pulse train generated by the mode-locked oscillator (79.3 MHz) and the reference RF (5.7 GHz) is measured by the in-loop BOMPD and applied to the oscillator cavity length. Long-term drift is monitored by the out-of-loop BOMPD and compensated using the pulse-motor-controlled RF phase shifter inserted before the RF input to the in-loop BOMPD. The optical delay line, installed before the regenerative amplifier in the chirped pulse amplification system, is used to adjust the relative timing between the XFEL and optical laser pulses. λ/2+PBS: half-wave plate and a polarization beam splitter; FC: fiber coupler; AOPDF: acousto-optic programable dispersive filter.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 32| Part 2| March 2025|
https://doi.org/10.1107/S1600577524011974
Follow J. Synchrotron Rad.
Sign up for e-alerts
E-alerts
Follow J. Synchrotron Rad. on Twitter
Twitter
Follow us on facebook
Facebook
Sign up for RSS feeds
RSS