A new, simple low-cost method is presented for real-time measurement of arbitrary vibrations using the shadow moire technique. It is shown, by comparing with holographic measurements, that amplitudes as small as 100 nm cab be accurately measured. The new method provides easy calibration for many other vibration measurements techniques.
© 1986 Optical Society of America
J. J. J. Dirckx, W. F. Decraemer, and J. L. Janssens, "Real-time shadow moire vibration measurement: method featuring simple setup, high sensitivity, and exact calibration," Appl. Opt. 25, 3785-3787 (1986)