Modified electronic speckle pattern interferometer with reduced number of elements for vibration analysis

Artur Olszak , Krzysztof Patorski

Abstract

An improved electronic speckle pattern interferometry (ESPI) system for vibration analysis by the time-average method is presented. The optical path length imbalance introduced in the interferometer allows us to implement a new phase shift heterodyning technique for vibration analysis by wavelength modulation of the light source. All the functions required for obtaining good visibility time average vibration fringes are implemented using laser diode modulation only. No additional phase modulator is required, the number of elements is reduced resulting in a greater flexibility of measurement procedures, equipment simplification and cost reduction are obtained. Illustrative results of studies of vibration objects are given.
Author Artur Olszak
Artur Olszak,,
-
, Krzysztof Patorski (FM / IMPh)
Krzysztof Patorski,,
- The Institute of Micromechanics and Photonics
Journal seriesOptics Communications, ISSN 0030-4018
Issue year1997
Vol138
No4–6
Pages265-269
Keywords in EnglishESPI, Laser diode wavelength modulation, vibration measurement
ASJC Classification2208 Electrical and Electronic Engineering; 1606 Physical and Theoretical Chemistry; 3107 Atomic and Molecular Physics, and Optics; 2504 Electronic, Optical and Magnetic Materials
DOIDOI:10.1016/S0030-4018(97)00049-7
URL http://www.sciencedirect.com/science/article/pii/S0030401897000497
Languageen angielski
Score (nominal)30
Score sourcejournalList
Publication indicators WoS Citations = 15; GS Citations = 19.0; Scopus SNIP (Source Normalised Impact per Paper): 1999 = 0.824; WoS Impact Factor: 2006 = 1.48 (2) - 2007=1.387 (5)
Citation count*19 (2020-09-13)
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