Publications

Phase conjugate digital inline holography (PCDIH)

Guildenbecher, Daniel R.; Guildenbecher, Daniel R.; hoffmeister, kathryn h.; Kunzler, William M.; Richardson, Daniel R.; Kearney, Sean P.

We report digital inline holography (DIH) provides instantaneous three-dimensional (3D) measurements of diffracting objects; however, phase disturbances in the beam path can distort the imaging. In this Letter, a phase conjugate digital inline holography (PCDIH) configuration is proposed for removal of phase disturbances. Brillouin-enhanced four-wave mixing produces a phase conjugate signal that back propagates along the DIH beam path. Finally, the results demonstrate the removal of distortions caused by gas-phase shocks to recover 3D images of diffracting objects.