10-fs-level synchronization of photocathode laser with RF-oscillator forultrafast electron and X-ray sources

Collection with item attached
2017
Item details URL
http://open-repository.kisti.re.kr/cube/handle/open_repository/473399.do
DOI
10.1038/srep39966
Title
10-fs-level synchronization of photocathode laser with RF-oscillator forultrafast electron and X-ray sources
Description
This research was supported in part by the National Research Foundation(NRF) of Korea (under grants WCI-2011-001, 2012R1A2A2A01005544,2013M1A3A3A02042273 and 2015R1D1A1A01056647) and KAIST RED&B Project2016 (under grant N11160039).
abstract
Ultrafast electron-based coherent radiation sources, such as free-electron lasers (FELs), ultrafast electron diffraction (UED) and Thomson-scattering sources, are becoming more important sources in today's ultrafast science. Photocathode laser is an indispensable common subsystem in these sources that generates ultrafast electron pulses. To fully exploit the potentials of these sources, especially for pump-probe experiments, it is important to achieve high-precision synchronization between the photocathode laser and radio-frequency (RF) sources that manipulate electron pulses. So far, most of precision laser-RF synchronization has been achieved by using specially designed low-noise Er-fibre lasers at telecommunication wavelength. Here we show a modular method that achieves long-term (>1 day) stable 10-fs-level synchronization between a commercial 79.33-MHz Ti:sapphire laser oscillator and an S-band (2.856-GHz) RF oscillator. This is an important first step toward a photocathode laser-based femtosecond RF timing and synchronization system that is suitable for various small-to mid-scale ultrafast X-ray and electron sources.
provenance
Made available in Cube on 2018-09-28T10:18:27Z (GMT). No. of bitstreams: 0
language
English
author
Yang, Heewon
Han, Byungheon
Shin, Junho
Hou, Dong
Chung, Hayun
Baek, In Hyung
Jeong, Young Uk
Kim, Jungwon
orcid
Kim, Jungwon/0000-0001-5979-5774
accessioned
2018-09-28T10:18:27Z
available
2018-09-28T10:18:27Z
issued
2017
citation
SCIENTIFIC REPORTS(7)
issn
2045-2322
uri
http://open-repository.kisti.re.kr/cube/handle/open_repository/473399.do
Funder
과학기술정보통신부
Funding Program
한국원자력연구원연구운영비지원
Project ID
1711064444
Jurisdiction
Rep.of Korea
Project Name
원자핵기반 응용기술 개발
rights
openAccess
type
article


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