Combined fibre optic laser velocimeter and electronic speckle pattern interferometer with a common reference beam

J. D. Valera, A. F. Doval, J. D C Jones

Research output: Contribution to journalArticle

Abstract

A novel optical fibre system, for out-of-plane vibration analysis, comprising the complementary techniques of laser velocimetry and electronic speckle pattern interferometry, is described. The laser velocimeter (LV) and the electronic speckle pattern interferometer (ESPI) share a common reference arm and phase modulator. The LV locks to the motion of a point on the vibrating surface and since the ESPI and LV share a common reference arm, automatic heterodyning of the time-averaged ESPI fringes is achieved. The experimental results are described.

Original languageEnglish
Pages (from-to)578-582
Number of pages5
JournalMeasurement Science and Technology
Volume4
Issue number5
DOIs
Publication statusPublished - May 1993

Fingerprint Dive into the research topics of 'Combined fibre optic laser velocimeter and electronic speckle pattern interferometer with a common reference beam'. Together they form a unique fingerprint.

  • Cite this