Phase-continuous scan DSPI technique for measuring vibration mode

Shuhai Jia; Kaiduan Yue; Yushan Tan

doi:10.1117/12.365763

13 October 1999 Phase-continuous scan DSPI technique for measuring vibration mode

Shuhai Jia, Kaiduan Yue, Yushan Tan

Proceedings Volume 3783, Optical Diagnostics for Fluids/Heat/Combustion and Photomechanics for Solids; (1999) https://doi.org/10.1117/12.365763
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

The phase continuous scan technique is combined with the Bessel fringe-shifting technique to quantitatively analyze the vibration mode by time-averaging DSPI. Through the phase continuous scan, the background and speckle items are completely eliminated, which improves the fringe quality and enhances the signal-to-noise ratio of interferogram. There is no need to calibrate the optical phase-shifter exactly in this method. The anti-disturbance capability of this method is higher than that of the phase-stepping technique, so it is robust and easy to be used.

Citation Download Citation

Shuhai Jia, Kaiduan Yue, and Yushan Tan "Phase-continuous scan DSPI technique for measuring vibration mode", Proc. SPIE 3783, Optical Diagnostics for Fluids/Heat/Combustion and Photomechanics for Solids, (13 October 1999); https://doi.org/10.1117/12.365763

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