Acoustic measurement method in investigation of optical phenomena in a modulated CO 2 laser plasma

2007 ◽  
Author(s):  
Dorota A. Wojaczek ◽  
Edward F. Plinski ◽  
Lukasz Rosinski ◽  
Robert Trawinski
Keyword(s):  
Laser Plasma ◽  
Measurement Method ◽  
Acoustic Measurement ◽  
Optical Phenomena

Measurement of Laser Ablation Micro Impulse Using the Torsion Pendulum Interferometry

2011 ◽  
Vol 301-303 ◽  
pp. 1078-1082
Author(s):  
Ji Fei Ye ◽  
Guang Yu Wang ◽  
Dian Kai Wang
Keyword(s):  
Laser Ablation ◽  
Measurement Technique ◽  
Laser Plasma ◽  
Measurement Method ◽  
Torsion Pendulum ◽  
Differential Interferometry ◽  
Plasma Thruster ◽  
Important Measurement

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.

scholarly journals Development of an in situ peak intensity measurement method for ultraintense single shot laser-plasma experiments at the Sandia Z petawatt facility

2006 ◽  
Vol 77 (10) ◽  
pp. 10E723 ◽  
Author(s):  
Anthony Link ◽  
Enam A. Chowdhury ◽  
John T. Morrison ◽  
Vladimir M. Ovchinnikov ◽  
Dustin Offermann ◽  
...  
Keyword(s):  
Laser Plasma ◽  
Measurement Method ◽  
Intensity Measurement ◽  
Single Shot ◽  
Peak Intensity

Computer modeling of unsteady gas-dynamical and optical phenomena in low-temperature laser plasma

1991 ◽  
Author(s):  
Mikhail F. Kanevskii ◽  
L. A. Bolshov ◽  
S. Y. Chernov ◽  
Valerii A. Vorob'ev
Keyword(s):  
Low Temperature ◽  
Computer Modeling ◽  
Laser Plasma ◽  
Optical Phenomena

Ultraviolet Absorption of Refractory Elements by a Dual Laser Plasma Method

1988 ◽  
Vol 102 ◽  
pp. 243-246
Author(s):  
J.T. Costello ◽  
W.G. Lynam ◽  
P.K. Carroll
Keyword(s):  
Absorption Spectra ◽  
Laser Plasma ◽  
Optical Pulse ◽  
Ionic Species ◽  
Neutral Species ◽  
Plasma Method ◽  
Plasma Technique ◽  
Refractory Elements ◽  
Delay Times ◽  
Dual Laser

AbstractThe dual laser-produced plasma technique for the study of ionic absorption spectra has been developed by the use of two Q-switched ruby lasers to enable independent generation of the absorbing and back-lighting plasmas. Optical pulse handling is used in the coupling cicuits to enable reproducible pulse delays from 250 nsec. to 10 msec, to be achieved. At delay times > 700 nsec. spectra of essentially pure neutral species are observed. The technique is valuable, not only for obtaining the neutral spectra of highly refractory and/or corrosive materials but also for studying behaviour of ionic species as a function of time. Typical spectra are shown in Fig. 1.

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