Open AccessFLASH free‐electron laser single‐shot temporal diagnostic: terahertz‐field‐driven streaking
Author(s) -
Ivanov Rosen,
Liu Jia,
Brenner Günter,
Brachmanski Maciej,
Düsterer Stefan
Publication year - 2018
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s160057751701253x
Subject(s) - streaking , free electron laser , streak camera , terahertz radiation , desy , optics , flash (photography) , pulse duration , physics , laser , pulse (music) , optoelectronics , detector
The commissioning of a terahertz‐field‐driven streak camera installed at the free‐electron laser (FEL) FLASH at DESY in Hamburg, being able to deliver photon pulse duration as well as arrival time information with ∼10 fs resolution for each single XUV FEL pulse, is reported. Pulse durations between 300 fs and <15 fs have been measured for different FLASH FEL settings. A comparison between the XUV pulse arrival time and the FEL electron bunch arrival time measured at the FLASH linac section exhibits a correlation width of 20 fs r.m.s., thus demonstrating the excellent operation stability of FLASH. In addition, the terahertz‐streaking setup was operated simultaneously to an alternative method to determine the FEL pulse duration based on spectral analysis. FLASH pulse duration derived from simple spectral analysis is in good agreement with that from terahertz‐streaking measurement.