Two-step phase-shifting interferometry for self-interference digital holography

Tatsuki Tahara, Yuichi Kozawa, Ayumi Ishii, Koki Wakunami, Yasuyuki Ichihashi, Ryutaro Oi

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)


We propose a phase-shifting interferometry technique using only two in-line phase-shifted self-interference holograms. There is no requirement for additional recording or estimation in the measurement. The proposed technique adopts a mathematical model for self-interference digital holography. The effectiveness of the proposed technique is demonstrated by experiments on incoherent digital holographic microscopy and color-multiplexed fluorescence digital holography with computational coherent superposition. Two-color-multiplexed four-step phase-shifting incoherent digital holography is realized for the first time, to the best of our knowledge, using the proposed technique.

Original languageEnglish
Pages (from-to)669-672
Number of pages4
JournalOptics Letters
Issue number3
Publication statusPublished - 2021 Feb 1

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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