Open AccessJournal Article
Statistical optics
TLDR
Development of this more comprehensive model of the behavior of light draws upon the use of tools traditionally available to the electrical engineer, such as linear system theory and the theory of stochastic processes.Abstract:
Course Description This is an advanced course in which we explore the field of Statistical Optics. Topics covered include such subjects as the statistical properties of natural (thermal) and laser light, spatial and temporal coherence, effects of partial coherence on optical imaging instruments, effects on imaging due to randomly inhomogeneous media, and a statistical treatment of the detection of light. Development of this more comprehensive model of the behavior of light draws upon the use of tools traditionally available to the electrical engineer, such as linear system theory and the theory of stochastic processes.read more
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Journal ArticleDOI
Survey on Free Space Optical Communication: A Communication Theory Perspective
TL;DR: An up-to-date survey on FSO communication systems is presented, describing FSO channel models and transmitter/receiver structures and details on information theoretical limits of FSO channels and algorithmic-level system design research activities to approach these limits are provided.
Journal ArticleDOI
Focusing coherent light through opaque strongly scattering media
Ivo M. Vellekoop,Allard Mosk +1 more
TL;DR: Focusing of coherent light through opaque scattering materials by control of the incident wavefront with a brightness up to a factor of 1000 higher than the brightness of the normal diffuse transmission is reported.
Journal ArticleDOI
Femtosecond diffractive imaging with a soft-X-ray free-electron laser
Henry N. Chapman,Henry N. Chapman,Anton Barty,Michael J. Bogan,Sébastien Boutet,Sébastien Boutet,Sébastien Boutet,Matthias Frank,Stefan P. Hau-Riege,Stefano Marchesini,Stefano Marchesini,Bruce W. Woods,Saša Bajt,W. Henry Benner,Richard A. London,Richard A. London,Elke Plönjes,Marion Kuhlmann,Rolf Treusch,Stefan Düsterer,Thomas Tschentscher,Jochen R. Schneider,Eberhard Spiller,Thomas Möller,Christoph Bostedt,Matthias Hoener,David A. Shapiro,Keith O. Hodgson,David van der Spoel,F. Burmeister,M. Bergh,Carl Caleman,G. Huldt,M. Marvin Seibert,Filipe R. N. C. Maia,Richard W. Lee,Richard W. Lee,Abraham Szöke,Abraham Szöke,Nicusor Timneanu,Janos Hajdu,Janos Hajdu +41 more
TL;DR: In this paper, the FLASH soft X-ray free-electron laser was used to reconstruct a coherent diffraction pattern from a nano-structured nonperiodic object, before destroying it at 60,000 K.
Journal ArticleDOI
A Global Assessment of the SRTM Performance
TL;DR: The NASA/NGA Shuttle Radar Topography Mission (SRTM) collected interferometric radar data which has been used by the Jet Propulsion Laboratory to generate a near-global topography data product for latitudes smaller than 60° as mentioned in this paper.
Journal ArticleDOI
In vivo confocal scanning laser microscopy of human skin II: advances in instrumentation and comparison with histology.
Milind Rajadhyaksha,Milind Rajadhyaksha,Salvador González,James M. Zavislan,R. Rox Anderson,Robert H. Webb +5 more
TL;DR: A small, portable, and robust confocal microscope that is capable of imaging normal and abnormal skin morphology and dynamic processes in vivo, in both laboratory and clinical settings is built.
References
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Dissertation
Correction active des discontinuités pupillaires des télescopes à miroir segmenté pour l’imagerie haut contraste et la haute résolution angulaire
Abstract: La recherche de signes de vie extraterrestre par l'observation et la caracterisation d'exoplanetes est, entre autres, l'un des enjeux majeurs de l'astrophysique moderne. Cette quete se traduit de maniere instrumentale par le developpement de telescopes fournissant des resolutions angulaires superieures a celles obtenues a l'heure actuelle. C'est pourquoi les projets de futurs tres grands telescopes font usage de miroirs primaires depassant les 30 metres de diametre. Leur conception est alors inevitablement basee, pour des raisons techniques et technologiques, sur une geometrie segmentee. De ce fait, la segmentation du miroir primaire implique une complexification des structures pupillaires du telescope. Dans le but d'atteindre les niveaux de qualite optique necessaires aux applications scientifiques visees, la prise en compte et la correction des effets introduits par un mauvais alignement des segments est de prime importance puisque la resolution angulaire d'un telescope non cophase serait equivalente a celle obtenue avec un segment individuel. Dans ce contexte, je developpe dans cette these deux analyseurs de cophasage permettant de mesurer et de corriger les aberrations de piston, tip et tilt presentes sur une pupille segmentee. Le premier, nomme Self-Coherent Camera - Phasing Sensor (SCC-PS), est base sur une analyse du signal en plan focal. Le second, nomme ZELDA - Phasing Sensor (ZELDA-PS), repose quant a lui sur une analyse du signal en plan pupille. Sont presentes dans ce manuscrit les resultats obtenus a l'aide de simulations numeriques ainsi que ceux issus de l'implementation de la SCC-PS sur un banc d'optique d'essai.
Journal ArticleDOI
Air Turbulence Mitigation Techniques for Long-Range Terrestrial Surveillance
TL;DR: In this article, the authors put together various methodologies used for mitigating the air turbulence and the challenges associated with them and put together the first time puts together various methods for mitigating air turbulence.
Book
Blind Deconvolution through Polarization Diversity of Long Exposure Imagery
TL;DR: In this article, a post processing method was proposed to resolve objects at low signal levels using polarization diversity and no knowledge of the atmospheric seeing conditions using a two-channel system, one unpolarized image and one polarized image in a GEM algorithm.
Analyse und Optimierung von fokussierten LiDAR-Systemen für Windkraftanlagen
TL;DR: In this paper, a Dissertation beschaftigt sich mit der Auslegung fokussierter LiDAR-Sensorsysteme zur dopplerbasierten Messung der windgeschwindigkeit fur den pradiktiven Einsatz auf Windkraftanlagen.
Proceedings ArticleDOI
One-shot Stokes polarimetry for low-cost skin cancer detection
TL;DR: One-shot Stokes polarimetry as mentioned in this paper is an optical technique in which a laser of known polarization is fired at a target, and the altered polarization state of the returning light is measured.