Along with the development of accelerator technology, synchrotron emittance has continuously decreased. This results in increased brightness, but also causes a heavy heat load on beamline optics. Recently, optical surfaces with 0.1 nm micro-roughness and 0.05 µrad slope error (r.m.s.) have become commercially available and surface distortions due to heat load have become a key factor in determi...

Measuring the Fried parameter r(0) (atmospheric optical coherence length) in optical link scenarios is crucial to estimate a receiver's telescope performance or to dimension atmospheric mitigation techniques, such as in adaptive optics. The task of measuring r(0) is aggravated in mobile scenarios, when the receiver itself is prone to mechanical vibrations (e.g., when mounted on a moving platfor...

Optical vortices (nodal lines and phase singularities) are the generic singularities of scalar optics but are unstable in vector optics. We investigate experimentally and theoretically the unfolding of a uniformly polarized optical vortex beam on propagation through a birefringent crystal and characterize the output field in terms of polarization singularities (C lines and points of circular po...

We report on a novel condenser for full-field transmission x-ray microscopes that use synchrotron radiation from an undulator source. The condenser produces a Koehler-like homogeneous intensity distribution in the sample plane and eliminates object illumination problems connected with the high degree of spatial coherence in an undulator beam. The optic consists of a large number of small linear...

Modulation instability is a fundamental process of nonlinear science, leading to the unstable breakup of a constant amplitude solution of a physical system. There has been particular interest in studying modulation instability in the cubic nonlinear Schrödinger equation, a generic model for a host of nonlinear systems including superfluids, fibre optics, plasmas and Bose-Einstein condensates. M...

Depth Resolved Differences After Corneal Crosslinking With and Without Epithelial Debridement Using Multimodal Imaging Praveena Gupta, Best Anyama, Kert Edward, Kevin Wells, Massoud Motamedi, Bernard F. Godley, and Gracie Vargas 1 Department of Ophthalmology and Visual Sciences, University of Texas Medical Branch, Galveston, TX 2 School of Medicine, University of Texas Medical Branch, Galveston...

Sponsored by Tie Commission of the European Communities, Directorate General for Science, Research, and Development INSERM—Institut National de la Sante et de la Recherche Medicale Tie Biomedical Optics Society ELA—The European Laser Association EOS—The European Optical Society S8LM—La Societe Beige de Laser Medical SFLM—La Societe Frangaise des Lasers Medicaux SPIE—The International Society fo...

A 14-year-old boy affected by keratoconus underwent an anterior lamellar keratoplasty assisted by IntraLase femtosecond laser (Abbott Medical Optics, Abbott Park, IL). Results after 2 years of follow-up indicate the procedure may be safe and effective in pediatric patients.

Marie Walde, Benedict Diederich, Bei Cao, Rainer Heintzmann 1 Berlin Institute for Medical Systems Biology, Max Delbrück Center, Robert-Rössle-Str. 10, 13125 Berlin, Germany 2 Institute of Physical Chemistry, Friedrich-Schiller-University Jena, Helmholtzweg 4, 07743 Jena, Germany 3 Xi'an Institute of Optics and Precision Mechanics of CAS, China 4 Leibniz Institute of Photonic Technology, Albert...