A SIMPLE HETERODYNE TEMPORAL SPECKLE-PATTERN INTERFEROMETER
Journal Article
·
· AIP Conference Proceedings
- Department of Mechanical Engineering, Hong Kong Polytechnic University, Hung Hom, Kowloon (Hong Kong)
A common light path design of heterodyne speckle pattern interferometer based on temporal speckle pattern interferometry is proposed for non-contact, full-field and real-time continuous displacement measurement. Double frequency laser is produced by rotating a half wave plate. An experiment was carried out to measure the dynamic displacement of a cantilever plate for testing the proposed common path heterodyne speckle pattern interferometer. The accuracy of displacement measurement was checked by measuring the motion at the mid-point of the plate with a point displacement sensor.
- OSTI ID:
- 21366757
- Journal Information:
- AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1253; ISSN APCPCS; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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