A simple heterodyne temporal speckle-pattern interferometer

Wai On Wong, Z. Gao, J. Lu

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

1 Citation (Scopus)

Abstract

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.
Original languageEnglish
Title of host publication9th International Conference on Vibration Measurements by Laser and Noncontact Techniques and Short Course
Pages410-414
Number of pages5
Volume1253
DOIs
Publication statusPublished - 20 Jul 2010
Event9th International Conference on Vibration Measurements by Laser and Noncontact Techniques and Short Course - Ancona, Italy
Duration: 22 Jun 201025 Jun 2010

Conference

Conference9th International Conference on Vibration Measurements by Laser and Noncontact Techniques and Short Course
Country/TerritoryItaly
CityAncona
Period22/06/1025/06/10

Keywords

  • Heterodyning
  • Interferometer
  • Speckle

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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