Coherent diffractive imaging using randomly coded masks

Journal Article · Mon Dec 07 00:00:00 EST 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4937122· OSTI ID:22486173

D'Aspremont, Alexandre ^[1]; Turner, Joshua J. ^[2]

---

1. CNRS and D.I., UMR 8548, École Normale Supérieure, 45 Rue d'Ulm, 75005 Paris (France)
2. Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025 (United States)

We experimentally demonstrate an extension to coherent diffractive imaging that encodes additional information through the use of a series of randomly coded masks, removing the need for typical object-domain constraints while guaranteeing a unique solution to the phase retrieval problem. Phase retrieval is performed using a numerical convex relaxation routine known as “PhaseCut,” an iterative algorithm known for its stability and for its ability to find the global solution, which can be found efficiently and which is robust to noise. The experiment is performed using a laser diode at 532.2 nm, enabling rapid prototyping for future X-ray synchrotron and even free electron laser experiments.

• OSTI ID: 22486173
• Journal Information: Applied Physics Letters, Vol. 107, Issue 23; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
FREE ELECTRON LASERS
ITERATIVE METHODS
NOISE
RELAXATION
STABILITY
SYNCHROTRONS
X RADIATION