Abstract

Infrared laser beams (10.6 μm) are used to produce dynamic holograms on a recording medium composed of an oil film on a glass plate. The beams of diffraction orders 0 and ∓1 reconstructed in the visible (0.63 μm) from this hologram are made to interfere indicating any deformation/displacement of the object. Consideration is given to aberrations of the reconstructed waves and to vibrations. It is found that displacements can be measured accurately and that quality control of infrared components can be made easily in real-time.

© 1984 Optical Society of America

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