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Hilbert reconstruction of phase-shifted second-harmonic holographic images
David R Smith1, David G Winters, Philip Schlup
1School of Biomedical Engineering, Colorado State University, Fort Collins, Colorado 80523, USA.
Abstract:
New techniques are presented that make phase-shifting holography viable for second-harmonic generation (SHG) holography with weak object fields. We developed an intrinsic phase shift calibration of SHG holograms, an algorithm that extracts the reference and object intensity directly from a set of phase-shifted holographic data, and a more robust phase-shifting holography reconstruction algorithm based on π-shifted hologram pairs that permits self-calibration of the phase shift and recovery of the complex field through a Hilbert transform.
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