Abstract
Abstract The quality of the aberration compensation provided by phaseconjugating mirrors (PCMs) is important for applications in lensless imaging or interferometry. In many cases an accuracy of a tenth of the wavelength for the phase reversal is sufficient. It will be shown that both the Fourier fringe evaluation method and a lensless image projection technique are useful to characterize the fidelity of phase conjugation with BaTiO3. A quantitative evaluation of the fidelity is given for four-wave mixing in Bi12TiO20 and selfpumped PCM with BaTiO3.
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