Surface modification of organic polymer by dual action of extreme ultraviolet/visible-near infrared ultrashort pulses

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We present the experimental evidence of structural surface modifications of poly(methyl methacrylate) (PMMA) caused by simultaneous action of extreme ultraviolet (XUV) (similar to 21 nm) and visible-near infrared (visible-NIR) (820/410 nm) ultrashort pulses. Although the fluence of each individual beam was far below the surface modification threshold, very efficient and specific material expansion was observed after irradiation of PMMA by more than similar to 20 shots of mixed XUV/visible-NIR radiation. As the XUV photons generate free charge carriers, absorption of the optical radiation dramatically increases, which heats up the material and further enhances the XUV induced damage to the polymer chain.
Publisher
AMER INST PHYSICS
Issue Date
2009-01
Language
English
Article Type
Article
Keywords

PLASMA RADIATION SOURCE; SOFT X-RAYS; LASER; ABLATION; SPIKES

Citation

JOURNAL OF APPLIED PHYSICS, v.105, no.2

ISSN
0021-8979
DOI
10.1063/1.3072628
URI
http://hdl.handle.net/10203/13368
Appears in Collection
PH-Journal Papers(저널논문)
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