Quantitative phase imaging using actively stabilized phase-shifting low-coherence interferometry

Hidenao Iwai, Christopher Fang-Yen, Gabriel Popescu, Adam Wax, Kamran Badizadegan, Ramachandra R. Dasari, Michael S. Feld

Research output: Contribution to journalArticlepeer-review

Abstract

We describe a quantitative phase-imaging interferometer in which phase shifting and noise cancellation are performed by an active feedback loop using a reference laser. Depth gating via low-coherence light allows phase measurement from weakly reflecting biological samples. We demonstrate phase images from a test structure and living cells.

Original languageEnglish (US)
Pages (from-to)2399-2401
Number of pages3
JournalOptics Letters
Volume29
Issue number20
DOIs
StatePublished - Oct 15 2004
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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