Measurement of Laser Ablation Micro Impulse Using the Torsion Pendulum Interferometry


Article Preview

A method is described for measuring the micro impulse induced by the laser ablation. This method is based upon the torsion pendulum interferometry technique. The method measures the micro impulse through the detection of the swinging angle of torsion pendulum. The swinging angle is obtained by the laser differential interferometry. For the 10-4~10-7 magnitude micro-impulse, It could be the important measurement method in the research of micro laser plasma thruster (mLPT). The results of some preliminary experiments are presented with detailed reference to experiment methodology and accuracy. The measurement technique is well suited to cases seeking the measurement of mN×s magnitude micro-impulse.



Advanced Materials Research (Volumes 301-303)

Edited by:

Riza Esa and Yanwen Wu




J. F. Ye et al., "Measurement of Laser Ablation Micro Impulse Using the Torsion Pendulum Interferometry", Advanced Materials Research, Vols. 301-303, pp. 1078-1082, 2011

Online since:

July 2011




[1] C. R. Phipps, M. Birkan, W. Bohn: Review: Laser-Ablation Propulsion[J]. Journal of Propulsion and Power, Vol. 26(4) (2010), p.609~637.

[2] C. R. Phipps: Description of the Photonic Associates LPT, thruster. (Photonic Associates, 2003).

[3] C. R. Phipps, T. P. Turner, R. F. Harrison: Impulse Coupling to Targets in Vacuum by KrF, HF, and CO2 Single-pulse Lasers[J]. Appl. Phys, Vol. 64(3) (1988), p.1083~1096.

[4] C. R. Phipps, J. Luke, T. Lippert: Laser Ablation of Organic Coatings as Basis for Micropropulsion[J]. Thin Solid Films (2004), p.573~583.


[5] C. R. Phipps, R. F. Harrison, T. Shimada: Enhanced Vacuum Laser-impulse Coupling by Volume Absorption at Infrared Wavelengths[J]. Laser and Particle Beam, Vol. 8(1-2) (1990), p.281~298.


Fetching data from Crossref.
This may take some time to load.