The use of laser diodes and monomode optical fibre in electronic speckle pattern interferometry

H. Atcha

doi:10.1117/12.2321946

1 December 1991 The use of laser diodes and monomode optical fibre in electronic speckle pattern interferometry

H. Atcha

Proceedings Volume 1584, Fiber Optic and Laser Sensors IX; (1991) https://doi.org/10.1117/12.2321946
Event: OE Fiber, 1991, Boston, MA, United States

Abstract

The construction of electronic speckle pattern interferorneters (ESPI) using monomode optical fibre technology and solid state laser diode sources enables the realisation of compact, robust, portable instruments. The wavelength tunability of the diode sources extends the signal processing capability and the measurement techniques. Examples are presented of surface contour measurements in the range 33 μm to 8mm and heterodyne processing of time—averaged vibration fringes to enable determination of amplitude and phase relationships across the object surface.

Citation Download Citation

H. Atcha "The use of laser diodes and monomode optical fibre in electronic speckle pattern interferometry", Proc. SPIE 1584, Fiber Optic and Laser Sensors IX, (1 December 1991); https://doi.org/10.1117/12.2321946

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