When light-in-flight recording by holography is used two different sorts of apparent distortion of the wavefronts exist. The first distortion is common to all types of ultrafast gating viewing system and like relativistic phenomena it is caused by the limited speed of light used for observation. The second distortion is produced by the holographic process itself and is caused by the limited speed of the light pulse used as a reference beam. By using the second distortion to compensate for the first it is possible to manipulate or eliminate apparent wavefront tilts or distortions so that measurement of the 3-D shape of wavefronts or other objects is facilitated. A reconstruction beam that is the conjugate of the reference beam results in three interesting effects, one of which is the reemission of the recorded pulse.
© 1991 Optical Society of America
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