Optical ptychography: a practical implementation with useful resolution

Opt Lett. 2010 Aug 1;35(15):2585-7. doi: 10.1364/OL.35.002585.


Quantitative phase microscopy offers a range of benefits over conventional phase-contrast techniques. For example, changes in refractive index and specimen thickness can be extrapolated and images can be refocused subsequent to their recording. In this Letter, we detail a lensless, quantitative phase microscope with a wide field of view and a useful resolution. The microscope uses the recently reported coherent diffractive imaging technique of ptychography to generate images from recorded diffraction patterns.

MeSH terms

  • Algorithms
  • Cell Line, Tumor
  • Equipment Design
  • Holography
  • Humans
  • Image Processing, Computer-Assisted
  • Lenses
  • Microscopy, Interference / methods*
  • Microscopy, Phase-Contrast / methods*
  • Optics and Photonics*
  • Refractometry
  • Reproducibility of Results
  • Semiconductors