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Image enhancement based on optical parametric amplification
Author(s): Jing Yang; Cong Wang; Gao-hang Cai; Xiu-juan Pan; Peng-cheng Di; Jing-yuan Zhang; Da-fu Cui; Qin-jun Peng; Zu-yan Xu
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Paper Abstract

The expansion dynamics of laser-induced plasma (LIP) at front and rear surface of fused silica under 1064 nm nanosecond laser irradiation was investigated with fast photography, shadowgraphy and interferometry. Self-emission images of LIP show that the rear surface plasma (RSP) splits into a fast and a slow component at tens of nanoseconds delay after laser irradiation while the front surface plasma (FSP) does not split. Moreover, the FSP is identified to mainly contain free electrons while the RSP includes ejected neutrals. Thermal emission of superheated neutrals is suggested to be responsible for the generation of slow component.

Paper Details

Date Published: 12 May 2017
PDF: 6 pages
Proc. SPIE 10173, Fourth International Symposium on Laser Interaction with Matter, 101731V (12 May 2017); doi: 10.1117/12.2268265
Show Author Affiliations
Jing Yang, Technical Institute of Physics and Chemistry (China)
Cong Wang, Technical Institute of Physics and Chemistry (China)
Univ. of Chinese Academy of Sciences (China)
Gao-hang Cai, Technical Institute of Physics and Chemistry (China)
Xiu-juan Pan, Technical Institute of Physics and Chemistry (China)
Peng-cheng Di, Technical Institute of Physics and Chemistry (China)
Jing-yuan Zhang, Technical Institute of Physics and Chemistry (China)
Georgia Southern Univ. (United States)
Da-fu Cui, Technical Institute of Physics and Chemistry (China)
Qin-jun Peng, Technical Institute of Physics and Chemistry (China)
Zu-yan Xu, Technical Institute of Physics and Chemistry (China)


Published in SPIE Proceedings Vol. 10173:
Fourth International Symposium on Laser Interaction with Matter
Yongkun Ding; Guobin Feng; Dieter H. H. Hoffmann; Jianlin Cao; Yongfeng Lu, Editor(s)

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