Abstract

Quantitative measurements of the accuracy of interferometers with self-pumped phase-conjugate mirrors (SPPCM’s) involving the application of different kinds of SPPCM’s as the reference mirror, the cat-conjugator SPPCM, the backscattering SPPCM, and an external resonator SPPCM are shown, for the first time to our knowledge. We prove that the only way to achieve the same measurement accuracy as with classical interferometric systems is by use of the cat-conjugator SPPCM. Because of the external feedback in both of the other types of SPPCM, a phase error is introduced, resulting in a phase error in the interferogram. In addition, experimental data describing the time behavior of SPPCM’s, which is important for some interferometric applications, are given. An interferometer with a SPPCM for testing aspherical surfaces is presented.

© 1996 Optical Society of America

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