论文信息 - Measurement of complex surface deformation by high-speed dynamic phase-stepped digital speckle pattern interferometry.

Measurement of complex surface deformation by high-speed dynamic phase-stepped digital speckle pattern interferometry.

We describe a high-speed digital speckle pattern interferometer incorporating a line-scan camera and a waveguide phase modulator for the measurement of complex deformation (vibration phase and amplitude) at audio acoustic frequencies. Experimental data show continuous phase-stepped recovery of out-of-plane surface deformation in one dimension, obtained at 100 kHz with 2pi/20-rad (0.02-mum) displacement resolution, for surface velocities of 3.2 mm s>(-1) .

[1] P Jacquot,et al. Deformation measurement with object-induced dynamic phase shifting. , 1996, Applied optics.

[2] G. M. Brown,et al. Dynamic Computer Aided Video Holometry , 1990, Optics & Photonics.

[3] K. Creath. Phase-Shifting Speckle Interferometry , 1985, Optics & Photonics.

[4] Chris P. Brophy,et al. Effect of intensity error correlation on the computed phase of phase-shifting interferometry , 1990 .

[5] P. Carré. Installation et utilisation du comparateur photoélectrique et interférentiel du Bureau International des Poids et Mesures , 1966 .

[6] G. H. Kaufmann,et al. Phase-shifted dynamic speckle pattern interferometry at 1 kHz. , 1999, Applied optics.

[7] J. M. Huntley,et al. Temporal phase-unwrapping algorithm for automated interferogram analysis. , 1993, Applied optics.

[8] H J Frankena,et al. Real-time displacement measurement using a multicamera phase-stepping speckle interferometer. , 1994, Applied optics.

[9] Y. Hu,et al. The noise sensitivity of the Carré fringe-analysis technique , 1997 .

[10] A J Moore,et al. Transient deformation measurement with electronic speckle pattern interferometry and a high-speed camera. , 1999, Applied optics.