Deformation-phase measurement of diffuse objects using two laser beams of different wavelengths

Yoshihiko Tambara; Masaaki Adachi

doi:10.1117/12.467346

18 October 2002 Deformation-phase measurement of diffuse objects by using two laser beams of different wavelengths

Yoshihiko Tambara, Masaaki Adachi

Proceedings Volume 4902, Optomechatronic Systems III; (2002) https://doi.org/10.1117/12.467346
Event: Optomechatronic Systems III, 2002, Stuttgart, Germany

Abstract

In step-like deformations, discontinuous deformations, the techniques using a laser beam of single wavelength cannot measure the deformation amount. Because the deformation changes between captured specklegrams would be larger than the wavelength of the laser. We have developed the technique that can measure the large deformations having step-like discontinuities by using two laser beams of different wavelengths.

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Yoshihiko Tambara and Masaaki Adachi "Deformation-phase measurement of diffuse objects by using two laser beams of different wavelengths", Proc. SPIE 4902, Optomechatronic Systems III, (18 October 2002); https://doi.org/10.1117/12.467346

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KEYWORDS

CCD cameras

Speckle

Bragg cells

Laser development

Beam splitters

Cameras

Ferroelectric materials

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