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Diffraction Grating Handbook
Diffraction Grating Handbook

... composition of and processes in stars and planetary atmospheres, as well as offer clues to the large-scale motions of objects in the universe. In chemistry, toxicology and forensic science, grating-based instruments are used to determine the presence and concentration of chemical species in samples. ...
Diffraction Grating Handbook
Diffraction Grating Handbook

Thank you for attending CLEO/QELS. Look for your post
Thank you for attending CLEO/QELS. Look for your post

Untitled
Untitled

generation and propagation of optical vortices
generation and propagation of optical vortices

... which may be used for optical switching.9 In linear optics OV’s have been already utilized as “optical tweezers” to manipulate small objects.10–12 OV’s may also be useful for optical limiting purposes13 or for optical data storage. From the physical sciences point of view our understanding of vortic ...
Abstracts for OPTO 2014
Abstracts for OPTO 2014

Frontiers in Optics 2010/Laser Science XXVI
Frontiers in Optics 2010/Laser Science XXVI

... materials science, to name a few. This year, highlighted research included using LEDs to treat skin cancer, examining energy trends of communications equipment, quantum encryption over longer distances, and improvements to biological and chemical sensors. Select recorded sessions are now available t ...
Mechanisms of Pulsed Laser Ablation of
Mechanisms of Pulsed Laser Ablation of

... gleaned from these studies and organize it into a logical structure that provides an improved mechanistic understanding of pulsed laser ablation of tissue. We consider ablation to be any process of tissue incision or removal, regardless of the photophysical or photochemical processes involved. We re ...
chapter 4 starfish - Grupo de Óptica
chapter 4 starfish - Grupo de Óptica

Optical grating coupler biosensor and biomedical applications  Lorena Diéguez Moure
Optical grating coupler biosensor and biomedical applications Lorena Diéguez Moure

Nd:YAG Based Laser Sources for Targeting
Nd:YAG Based Laser Sources for Targeting

... used in laser systems operating over the full military environment of vibration and temperature. A number of aspects of the design are computer modelled with experimental verification, such as the effects of thermal lensing in the Nd:YAG slab, and the polarisation states in the resonator. These were ...
CRANFIELD UNIVERSITY Edouard Berrocal MULTIPLE
CRANFIELD UNIVERSITY Edouard Berrocal MULTIPLE

Nonlinear pulse compression DISSERTATION
Nonlinear pulse compression DISSERTATION

OPTICAL ISOMERISM
OPTICAL ISOMERISM

... • This is like the idea that a right hand does not fit a left handed glove – the molecule must be the correct shape to fit the molecule it is reacting with. • Many natural molecules are chiral and most natural reactions are affected by optical isomerism. © www.chemsheets.co.uk ...
Waveguide lasers in ytterbium doped tantalum pentoxide for
Waveguide lasers in ytterbium doped tantalum pentoxide for

... waveguide lasers on silicon substrate, as a basis to provide the next generation of mass-producible, low-cost planar devices with many interlocking photonic circuits for multi-functionality. Numerical modelling of symmetrical rib waveguide in Ta2O5 was carried out finding an optimum waveguide design ...
Studies of Nonlinear Femtosecond Pulse Propagation in Bulk
Studies of Nonlinear Femtosecond Pulse Propagation in Bulk

... sity and therefore faster transmission of the data. The high intensities associated with shorter pulses, however, can lead to nonlinear propagation effects and increased temporal spreading or pulse deformation during transmission. Temporal spreading limits the density of pulses that can be sent down ...
New Approaches to Gyroscopic Lasers
New Approaches to Gyroscopic Lasers

DETERMINING SPATIAL MODES OF SEMICONDUCTOR LASERS
DETERMINING SPATIAL MODES OF SEMICONDUCTOR LASERS

Femtosecond filamentation in transparent media
Femtosecond filamentation in transparent media

Lithium Niobate Microphotonic Modulators
Lithium Niobate Microphotonic Modulators

THE NEMATIC { SMECTIC-A PHASE TRANSITION: A HIGH
THE NEMATIC { SMECTIC-A PHASE TRANSITION: A HIGH

... uctuations, this transition has remained an incompletely understood problem in condensed matter physics. The role of uctuations is particularly interesting and complicated in the region of material-parameter space close to the Landau tricritical point (LTP), where the HLM e ect is expected to be m ...
High Harmonic Generation for Coherent Diffractive Imaging
High Harmonic Generation for Coherent Diffractive Imaging

... ray radiation and for time-resolved spectroscopy, such as femtosecond photoelectron spectroscopy and for polychromatic diffractive imaging with high spatial resolution, where only a few harmonic orders of short wavelength or a dominant photon energy are required and any optics in the harmonic beam ...
Engineering nonlinearities in nanoscale optical systems
Engineering nonlinearities in nanoscale optical systems

... has recently been revived in the use of the surfaces of scanning tunneling microscope tips to enhance nonlinear optics for local generation of optical higher harmonics [2]. In addition the need to make integrated optical structures, which enable efficient phase matching by using artificial periodic ...
Quantum Gas Microscope With Optical Lattice
Quantum Gas Microscope With Optical Lattice

... interaction energy, thus reaching the regime of strongly interacting. It was not long, before the community started to recognise the advantages of the optical lattice system over the traditional model system for studying condensed matter that of real solids. In essence, atoms tunneling in the optica ...
1 - Foundation for Research and Technology
1 - Foundation for Research and Technology

... The field of electromagnetic metamaterials is driven by fascinating and far-reaching theoretical visions such as, e.g., perfect lenses, invisibility cloaking, and enhanced nonlinearities. This emerging field has seen spectacular experimental progress in recent years. Yet, two major challenge remains ...
1 2 3 4 5 ... 61 >

Super-resolution microscopy

Super-resolution microscopy is a form of light microscopy. Due to the diffraction of light, the resolution of conventional light microscopy is limited as stated by Ernst Abbe in 1873. A good approximation of the resolution attainable is the full width at half maximum (FWHM) of the point spread function, and a precise widefield microscope with high numerical aperture and visible light usually reaches a resolution of ~250 nm.Super-resolution techniques allow the capture of images with a higher resolution than the diffraction limit. They fall into two broad categories, ""true"" super-resolution techniques, which capture information contained in evanescent waves, and ""functional"" super-resolution techniques, which use clever experimental techniques and known limitations on the matter being imaged to reconstruct a super-resolution image.True subwavelength imaging techniques include those that utilize the Pendry Superlens and near field scanning optical microscopy, the 4Pi Microscope and structured illumination microscopy technologies like SIM and SMI. However, the majority of techniques of importance in biological imaging fall into the functional category.There are two major groups of methods for functional super-resolution microscopy: Deterministic super-resolution: The most commonly used emitters in biological microscopy, fluorophores, show a nonlinear response to excitation, and this nonlinear response can be exploited to enhance resolution. These methods include STED, GSD, RESOLFT and SSIM. Stochastic super-resolution: The chemical complexity of many molecular light sources gives them a complex temporal behaviour, which can be used to make several close-by fluorophores emit light at separate times and thereby become resolvable in time. These methods include SOFI and all single-molecule localization methods (SMLM) such as SPDM, SPDMphymod, PALM, FPALM, STORM and dSTORM.On October 8th, 2014, the Nobel Prize in Chemistry was awarded to Eric Betzig, W.E. Moerner and Stefan Hell for ""the development of super-resolved fluorescence microscopy,"" which brings ""optical microscopy into the nanodimension"".
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