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Review of Scientific Instruments / Volume 79 / Issue 11 / OPTICS; ATOMS AND MOLECULES; SPECTROSCOPY; PHOTON DETECTORS

Rev. Sci. Instrum. 79, 113101 (2008); http://dx.doi.org/10.1063/1.3020700 (3 pages)

A compact all-fiber displacement interferometer for measuring the foil velocity driven by laser

Jidong Weng, Xiang Wang, Yun Ma, Hua Tan, Lingcang Cai, Jianfeng Li, and Cangli Liu

Laboratory for Shock Waves and Detonation Physics Research, Institute of Fluid Physics, P.O. Box 919-102, Mianyang, Sichuan 621900, People's Republic of China

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(Received 24 April 2008; accepted 17 October 2008; published online 7 November 2008)

A compact all-fiber displacement interferometer (AFDI) system, working at 1550 nm, has been developed and tested, and its working fundamentals will be introduced in this letter. In contrast with other models of fiber-optic velocity interferometer system, AFDI adopts a single-mode optic fiber pigtail as the detect head, diameter of which is only 1 mm, to collect directly the reflect laser beam from the moving surface, which makes this instrument have some unique advantages in observing the point movements of a small flyer. Preliminary experiments using this instrument to measure the velocity history of a small aluminum thin foil driven by a nanosecond pulse laser were conducted successfully, the precise velocity history profile deduced from the sharp interference fringes and the nanometer resolution in displacement gives an eloquent proof of its eminent abilities. The field depth ( ∼ 2 mm) of our AFDI is a little smaller than the DISAR [ Weng et al., Appl. Phys. Lett. 89, 111101 (2006) ] system, but its compact structure makes it much convenient to operate. Further applications for multipoints velocity history measurements of small targets are under consideration.

© 2008 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. PRINCIPLE OF THE AFDI
  3. AFDI DESIGN AND EXPERIMENTAL TEST
  4. CONCLUSION

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KEYWORDS and PACS

Keywords

laser beam applications, light interferometers, optical fibres

PACS

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3020700

PUBLICATION DATA

ISSN

0034-6748 (print)  
1089-7623 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    A. R. Valenzuela, G. Rodriguez, S. A. Clarke, and K. A. Thomas, Rev. Sci. Instrum. 78, 013101 (2007)APPLAB000089000017172103000001.

    L. M. Barker and R. E. Hollenback, J. Appl. Phys. 43, 4669 (1972)JAPIAU000043000011004669000001.

    J. Weng, H. Tan, X. Wang, Y. Ma, S. Hu, and X. Wang, Appl. Phys. Lett. 89, 111101 (2006)APPLAB000089000011111101000001.

    O. T. Strand, D. R. Goosman, C. Martinez, and T. L. Whitworth, Rev. Sci. Instrum. 77, 083108 (2006)RSINAK000077000008083108000001.

    S. K. Sheem, Appl. Phys. Lett. 35, 914 (1979)APPLAB000035000012000914000001.

    J. Weng, H. Tan, S. Hu, Y. Ma, and X. Wang, Rev. Sci. Instrum. 76, 093301 (2005)RSINAK000076000009093301000001.


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