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.
© 2010 Optical Society of America
Original Manuscript: April 7, 2010
Revised Manuscript: June 22, 2010
Manuscript Accepted: July 4, 2010
Published: July 27, 2010
Vol. 5, Iss. 12 Virtual Journal for Biomedical Optics
Andrew M. Maiden, John M. Rodenburg, and Martin J. Humphry, "Optical ptychography: a practical implementation with useful resolution," Opt. Lett. 35, 2585-2587 (2010)