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Proceedings Paper

Critical fluence effects in laser propulsion
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Paper Abstract

The fluence dependence of the laser ablation of selected polymers was studied within the range from 1-150 J/cm2. A TEA CO2 laser operating at 10.6 μm with 300 ns main pulse length and up to 20 J pulse energy was used to ablate prepared polymer samples with single pulses of laser energy. Measurements of parameters such as the ablated mass per spot area (Δma), momentum coupling coefficient (Cm), specific impulse (Isp), and internal efficiency (ηi) will be plotted as functions of fluence. Critical threshold effects observed throughout the experiments will be described in detail.

Paper Details

Date Published: 12 May 2008
PDF: 11 pages
Proc. SPIE 7005, High-Power Laser Ablation VII, 70051Z (12 May 2008); doi: 10.1117/12.782469
Show Author Affiliations
John E. Sinko, The Univ. of Alabama in Huntsville (United States)
Don A. Gregory, The Univ. of Alabama in Huntsville (United States)

Published in SPIE Proceedings Vol. 7005:
High-Power Laser Ablation VII
Claude R. Phipps, Editor(s)

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