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Proceedings Paper

Mechanism of resonant infrared laser vaporization of intact polymers
Author(s): R. F. Haglund, Jr.; R. J. Belmont; D. M. Bubb; N. L. Dygert; S. L. Johnson; K. E. Schriver
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Paper Abstract

Experiments on pulsed laser vaporization of many different kinds of polymers have demonstrated that it is possible to eject intact polymers into the ambient, whether air or vacuum, by resonant pulsed laser excitation, using both neat and matrix targets. Two recent studies of resonant infrared ablation - one on polystyrene, the other on poly(amic acid), the precursor for the thermoset polyimide - show moreover that the ablation process is both wavelength selective and surprisingly non-energetic, especially compared to ultraviolet laser ablation. We propose a wavelength-selective photothermal mechanism involving breaking of intermolecular hydrogen bonds that is consistent with these observations.

Paper Details

Date Published: 7 June 2006
PDF: 9 pages
Proc. SPIE 6261, High-Power Laser Ablation VI, 62610V (7 June 2006); doi: 10.1117/12.674175
Show Author Affiliations
R. F. Haglund, Jr., Vanderbilt Univ. (United States)
R. J. Belmont, Vanderbilt Univ. (United States)
D. M. Bubb, Rutgers Univ., Camden (United States)
N. L. Dygert, Vanderbilt Univ. (United States)
S. L. Johnson, Vanderbilt Univ. (United States)
K. E. Schriver, Vanderbilt Univ. (United States)

Published in SPIE Proceedings Vol. 6261:
High-Power Laser Ablation VI
Claude R. Phipps, Editor(s)

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