title: Quantitative phase imaging using actively stabilized phase-shifting low-coherence interferometry.
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.
authors.affiliation: G. R. Harrison Spectroscopy Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
authors.forename: Hidenao
authors.initials: H
authors.lastname: Iwai
authors.forename: Christopher
authors.initials: C
authors.lastname: Fang-Yen
authors.forename: Gabriel
authors.initials: G
authors.lastname: Popescu
authors.forename: Adam
authors.initials: A
authors.lastname: Wax
authors.forename: Kamran
authors.initials: K
authors.lastname: Badizadegan
authors.forename: Ramachandra R
authors.initials: RR
authors.lastname: Dasari
authors.forename: Michael S
authors.initials: MS
authors.lastname: Feld
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D006367:HeLa Cells / Q000473:pathology*; D006801:Humans; D007089:Image Enhancement / Q000295:instrumentation* / Q000379:methods; D007368:Interferometry / Q000295:instrumentation* / Q000379:methods; D019047:Phantoms, Imaging; D041623:Tomography, Optical Coherence / Q000295:instrumentation* / Q000379:methods