The Phase Retrieval and Imaging Science Group in the Intitute
of Optics at the University of Rochester performs research
in the areas of unconventional imaging, phase retrieval, wave-front
sensing, imaging with sparse-aperture telescopes, and image
What we do (paper titles analyzed by www.wordle.net)
(Click on the picture and enlarge the resulting window to get a magnified version of it:)
Students Scott Paine and Matt Bergkoetter spent a month (during August and September, 2017) at NASA's Johnson Space Center in Houston, Texas, helping with the final cryo-vac testing of the James Webb Space Telescope. They survived hurricane Harvey unscathed.
Recently Published Papers
(PDFs of these papers can be downloaded from our web site after clicking on the Publications box to the left.)
By Aaron Michalko:
“Verification of transverse translation diverse phase retrieval for concave optical metrology,”Opt. Letters 19, 4827-4830 (2018).
“Transverse Translation Diverse Phase Retrieval Using Soft-Edged Illumination,” Opt. Lett. 43, 1331-1334 (2018)."Transverse Translation Diverse Phase Retrieval Using Soft-Edged Illumination," Opt. Lett. 43, 1331-1334 (2018).
By Wes Farriss: "Phase retrieval in generalized optical interferometry systems,” Opt. Express 26, 2191-2202 (2018). T. Malhotra, W.E. Farriss, J. Hassett, A.F. Abouraddy, J.R. Fienup, and A.N. Vamivakas, "Interferometric spatial mode analyzer with a bucket detector," Opt. Express 26, 8719-8728 (2018).
By Scott Paine: "Machine learning for improved image-based wavefront sensing," Opt. Lett. 43, 1235-1238 (2018).
"Extending capture range for piston retrieval in segmented systems," Appl. Opt. 56, 9186-9192 (2017).
By Alex Iacchetta: “Wide-Field Spatiospectral Interferometry: Theory and Imaging Properties,” J. Opt. Soc. Am. A 34, 1896-1907 (2017). It was highlighted as the "Editors Pick."
By Alden Jurling and Matt Bergkoetter: "Techniques for arbitrary sampling in two-dimensional Fourier transforms," J. Opt. Soc. Am. A35, 1784-1796 (2018).
By Jim Fienup: “Direct-detection Synthetic-aperture Coherent Imaging by Phase Retrieval,” Opt. Eng. 56, (2017) dx.doi.org/10.1117/1.OE.56.11.113111 (13 pp).
An Ancient Paper
According to Thomson Reuters Web of Science, one of Prof. Fienup's papers [J.R. Fienup, “Phase Retrieval Algorithms: a Comparison,” Appl. Opt. 21, 2758-2769 (1982)] has received over 2,600 citations and is the most highly cited paper (out of over 49,000) in the journal Applied Optics.
Examples of Research Problems