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CO2 Laser Ablation Area Scaling and Redeposition on Flat Polyoxymethylene Targets

Sinko, John Elihu and Ogita, Naoya and Sasoh, Akihiro and Scharring, Stefan and Eckel, Hans-Albert and Röser, Hans-Peter (2010) CO2 Laser Ablation Area Scaling and Redeposition on Flat Polyoxymethylene Targets. In: International Symposium on High Power Laser Ablation 2010, 1278, pp. 538-547. American Institute of Physics, Melville, NY. High Power Laser Ablation 8, 18.-22. April 2010, Santa Fe, New Mexico, USA. ISBN 978-0-7354-0828-9. ISSN 0094-243X

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Abstract

One of the remaining subjects of interest for laser ablation propulsion study is whether special benefits or challenges exist when applying a particularly large or small laser spot area to a target. This subject is of high importance for topics including laser removal of space debris, micropropulsion, and design of laser propulsion vehicles. Analysis of spot area-dependent effects is complex since ablation phenomena differ between atmosphere and vacuum conditions. Progress has also been impeded by the difficulty of setting control parameters (particularly fluence) constant while the spot area is adjusted. It is virtually impossible for one group to address small- and large-area effects using a single high-power laser system. Recent collaborative experiments using 100-J class and 10-J class CO2 lasers have advanced the understanding of laser propulsion area scaling. Experiments were conducted below the threshold for plasma formation. The dependence of various laser propulsion parameters on the laser spot area has been investigated within areas covering approximately 0.5-50 cm2 on the target.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:CO2 Laser Ablation Area Scaling and Redeposition on Flat Polyoxymethylene Targets
Authors:
AuthorsInstitution or Email of Authors
Sinko, John ElihuMicro-Nano Global Center of Excellence, Graduate School of Engineering, Nagoya, Japan
Ogita, NaoyaDepartment of Aerospace Engineering, Nagoya University, Japan
Sasoh, AkihiroDepartment of Aerospace Engineering, Nagoya University, Japan
Scharring, Stefanstefan.scharring@dlr.de
Eckel, Hans-Alberthans-albert.eckel@dlr.de
Röser, Hans-PeterInstitut für Raumfahrtsysteme, Universität Stuttgart
Date:2010
Journal or Publication Title:International Symposium on High Power Laser Ablation 2010
Refereed publication:Yes
In ISI Web of Science:Yes
Volume:1278
Page Range:pp. 538-547
Editors:
EditorsEmail
Phipps, ClaudePhotonic Associates, LLC
Publisher:American Institute of Physics, Melville, NY
Series Name:AIP Conference Proceedings
ISSN:0094-243X
ISBN:978-0-7354-0828-9
Status:Published
Keywords:Laser ablation, Area scaling, Impulse measurement, Laser propulsion
Event Title:High Power Laser Ablation 8
Event Location:Santa Fe, New Mexico, USA
Event Type:international Conference
Event Dates:18.-22. April 2010
Organizer:Claude Phipps, Photonic Associates LLC
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Laser Research and Technology
Location: Stuttgart
Institutes and Institutions:Institute of Technical Physics
Deposited By: Stefan Scharring
Deposited On:19 Sep 2012 14:27
Last Modified:12 Dec 2013 21:46

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