Polarized Shearing-Moire Interferometry For Separated 3-D Strain Fringe Patterns

Jing Fang; Fulong Dai

doi:10.1117/12.962891

25 January 1990 Polarized Shearing-Moire Interferometry For Separated 3-D Strain Fringe Patterns

Jing Fang, Fulong Dai

Proceedings Volume 1166, Polarization Considerations for Optical Systems II; (1990) https://doi.org/10.1117/12.962891
Event: 33rd Annual Technical Symposium, 1989, San Diego, United States

Abstract

Utilizing laser's properties of both polarization and temporal coherence , a real time method of moire interferometry is proposed to obtain the separated 3-1) displacement derivative fringe patterns . For dual beams that contain identical polarization components , the optical-path difference is larger than the coherent length to eliminate the interaction between the wavefronts due to the shearing . For dual beams that include no identical components of polarization , the vibration planes are perpendicular to each other to fulfil the frame-separation of the in-plane derivative patterns. The out-of-plane displacement derivative patterns are achieved by the shearing of the zero-order diffractions of the grating.

Citation Download Citation

Jing Fang and Fulong Dai "Polarized Shearing-Moire Interferometry For Separated 3-D Strain Fringe Patterns", Proc. SPIE 1166, Polarization Considerations for Optical Systems II, (25 January 1990); https://doi.org/10.1117/12.962891

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KEYWORDS

Polarization

Wavefronts

Diffraction

Fringe analysis

Diffraction gratings

Deflectometry

Glasses

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