Affiliation:
1. Chinese Academy of Sciences (CAS)
2. University of Chinese Academy of Sciences
3. Huazhong University of Science and Technology
4. Shanxi University
Abstract
This study proposes what we believe to be a novel x-ray detection
system that achieves a temporal resolution of 930 fs with
photorefractive and four-wave mixing effects. The system comprises two
parts: a signal-conversion system and signal-acquisition system. The
signal-conversion system is based on the photorefractive effect, which
converts x-ray evolution into the variation of infrared interference
intensity. The signal-conversion sensor consists of ultra-fast
response LT-GaAs and a high-resolution interference cavity, achieving
a resolution of 767 fs. The signal-acquisition system
consists of a time-domain amplification system based on four-wave
mixing and a high-resolution signal-recording system with a resolution
of 21 ps, providing a temporal resolution of 525 fs.
Funder
National Natural Science Foundation of
China
Chinese Academy of Sciences
Strategic Priority Research Program of
the Chinese Academy of Sciences, China
CAS “Light of West China”
Program
Subject
Atomic and Molecular Physics, and Optics,Engineering (miscellaneous),Electrical and Electronic Engineering