Harmonic phase-dispersion microscope with a Mach-Zehnder interferometer.

Journal Article (Journal Article)

Harmonic phase-dispersion microscopy (PDM) is a new imaging technique in which contrast is provided by differences in refractive index at two harmonically related wavelengths. We report a new configuration of the harmonic phase-dispersion microscope in a Mach-Zehnder geometry as an instrument for imaging biological samples. Several improvements on the earlier design are demonstrated, including a single-pass configuration and acousto-optic modulators for generating the heterodyne signals without mechanical arm scanning. We demonstrate quantitative phase-dispersion images of test structures and biological samples.

Full Text

Duke Authors

Cited Authors

  • Ahn, A; Yang, C; Wax, A; Popescu, G; Fang-Yen, C; Badizadegan, K; Dasari, RR; Feld, MS

Published Date

  • March 2005

Published In

Volume / Issue

  • 44 / 7

Start / End Page

  • 1188 - 1190

PubMed ID

  • 15765698

Electronic International Standard Serial Number (EISSN)

  • 1539-4522

International Standard Serial Number (ISSN)

  • 1559-128X

Digital Object Identifier (DOI)

  • 10.1364/ao.44.001188


  • eng