Image fidelity improvement using self-pumped phase conjugation digital holographic microscopy

Abstract

In digital holographic microscopy, wavefront aberrations suppressions techniques are very matured from the perspective of the reference wave, i.e. aberrations was suppressed by numerically manipulating the reference wave. There are techniques that deal with the noises that arise from the object arm, but were mostly numerical procedure in the reconstruction stage. We found out that a better approach would be suppressing the noises, particular scattering noise from the object arm, prior to the recording stage via phase conjugation technique. By using phase conjugation technique, it is possible to trace back to the object plane where scattering is minimum; hence, achieving optical noise suppression prior to the recording stage.