Abstract

Digital optical phase conjugation (DOPC), also known as time reversal, is a technique for optically reproducing an object behind scattering media [1-3]. DOPC has been used for biomedical imaging, free-space optical communication, security, and so on [4-8]. In DOPC, the wavefront of the light from an object behind a scattering medium is captured by an interferometric measurement, such as digital holography. The captured wavefront is backward entered into the scattering medium, and then the object is optically reproduced behind the scattering media. The measurement and control of the wavefront impose coherent light in DOPC and/or make its optical setup bulky.

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