Open AccessPulsed digital holographic recording of ultra-fast process of the femto-second order
Author(s) -
Xiaolei Wang,
Yi Wang,
Hongchen Zhai,
Xing Zhu,
Guoguang Mu
Publication year - 2006
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.55.4613
Subject(s) - femto , optics , holography , ultrashort pulse , multiplexing , process (computing) , pulse (music) , angular resolution (graph drawing) , physics , laser , computer science , telecommunications , detector , mathematics , combinatorics , nuclear physics , operating system
In this paper, we report a pulsed digital micro-holography system for recording ultra-fast process of the order of femto-second. Two sub-pulse-train generators can be adjusted independently for generating reference beams with different spatial angles and object beams of the same angle, respectively, and the time delay between the sub-pulses can be adjusted from pico-senconds to femto-seconds. In the experiment, the ultra-fast dynamic process of air ionization induced by a femto-second laser pulse is recorded by the holographic recording system through spatially angular multiplexing, and both of the digitally reconstructed images in intensity and phase are obtained, which show the dynamic process of formation and propagation of the plasma with a time resolution of the order of femto-second.