FIP Seminar Series - Dr. P. Scott Carney "Synthetic Optical Holography"
Wednesday, April 1, 2015
12:00 pm - 1:00 pm
Dr. P. Scott Carney
"Synthetic Optical Holography" Dr. P. Scott Carney, University of Illinois Urbana Champaign. Scattering scanning near-field optical microscopy (s-SNOM) provides resolution of 5-10 nm and is inherently phase-sensitive. It is also slow, the bottleneck being the determination of phase and amplitude at each pixel. Holography is an efficient, multiplex method of acquiring phase across a whole image. We report on the marriage of holography and s-SNOM, a new development that improves the speed of nanooptical imaging by orders of magnitude while simplifying the experiment. Moreover, synthetic optical holography is quite general. We show the method applied to confocal imaging where it provides phase sensitive data that may be coherently post-processed.