Measurement of high-speed flyer using F-P cavity interferometer

TANG Xiao-rong; LI Jian-feng; ZHANG Da-yong; TAO Yan-hui; LIU Hai-tao

In order to measure the velocity history of the reflected surface or the internal particles velocity history of the materials under shock wave conditions,on the basis of the frequency-selecting principle of F-P optical resonator,a new type of velocity interferometer is developed,which makes use of the absolute magnitude of Doppler shift to continuously measure the moving of a flyer speed.The flyer is driven by a electric exploding foil,the magnitude of its speed can reach up to 3km/s within 60ns.Preliminary results show that the uncertainty in data is less than 5%.Compared with other laser interferometers,the lately developed thin cavity interferometer is compact,simple and low cost.So it can be widely used in the detonation and shock wave physics experimental research.

Corresponding author: LI Jian-feng, jianfeng816@sohu.com;

1. Laboratory for Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900, China

Received Date: 2006-01-11

Accepted Date: 2006-03-01

Available Online: 2007-04-25

Abstract: In order to measure the velocity history of the reflected surface or the internal particles velocity history of the materials under shock wave conditions,on the basis of the frequency-selecting principle of F-P optical resonator,a new type of velocity interferometer is developed,which makes use of the absolute magnitude of Doppler shift to continuously measure the moving of a flyer speed.The flyer is driven by a electric exploding foil,the magnitude of its speed can reach up to 3km/s within 60ns.Preliminary results show that the uncertainty in data is less than 5%.Compared with other laser interferometers,the lately developed thin cavity interferometer is compact,simple and low cost.So it can be widely used in the detonation and shock wave physics experimental research.

HTML

Reference (11)

[1]	BARKER L M,HOLLENBACK R E.Laser interferometer for measuring high velocities of any reflecting surface[J].J A P,1972,43(11):4669～4675.
[2]	GOOSMAN D R.The multibeam Fabry-Perot velocimeter:efficient measurement of high velocities[A].Science and Technology Review[C].California:Lawrence Livermore National Laboratory,1996.12～20.
[3]	MCMILLAN C F,PAKER N L,GOOSMAN D R.Efficiency enhancements for Fabry-Perot used in velocimetry[J].Appl Opt,1989,25(5):826～827.
[4]	SUBIAS J,ALONSO R,VILLUENDAS F et al.Wavelength selective optical fiber couplers based on longitudinal Fabry-Perot structures[J].IEEE Journal of Lighfwave Technology,1994,12(7):1129～1135.
[5]	HU Sh L.Laser interferometry for measuring velocities[M].Beijing:National Defence Industry Press,2001.142～146(in Chinese).
[6]	LLNL.S TR research highlights[EB/OL].www.llin.gov/str/JulAug04/pdfs/07_04.4.pdf.2004-07-17.
[7]	WENG J D,TAN H,HU Sh L.A new all-fiber velocity interferometer system for any rsflector[J].High Power Laser and Particle Beams,2005,17(4):533～536(in Chinese).
[8]	YAO J Q.Laser technology[M].Changsha:Hunan Sicence Technology Press,1998.67～71(in Chinese).
[9]	BELOUSOV P Y,DUBNISTCHEV Y N.The application of an optical Doppler frequency discriminator in a laser velocimeter[J].Opt Laser Technol,1977,9(10):229～231.
[10]	SWEAT W C.Depth of focus in velocity interferometers system for any reflector systems[J].Review of Science Instrument,1992,63(5):2945～2949.
[11]	REN L,XIE G D,YANG Zh Y.The numerical simulation of exploding foil initiator[J].Initiating Explosive,2001(1):14～19(in Chinese).

Measurement of high-speed flyer using F-P cavity interferometer

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Proportional views