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Wave optical simulations of x-ray nano
Wave optical simulations of x-ray nano

Supernormal vision and high-resolution retinal imaging through
Supernormal vision and high-resolution retinal imaging through

... sixth order remain almost unchanged. The second-order Zernike aberrations are defocus and astigmatism. The mean value of the astigmatism in the four eyes left uncorrected by trial lenses was ;0.2 diopters (D). The mean defocus in the second-order Zernike mode was ;0.4 D. Although, it would appear th ...
Fabrication and Nonlinear Refractive Index Measurement of
Fabrication and Nonlinear Refractive Index Measurement of

... silver nanoparticles is another applications of these particles. The novel chitin/nanosilver composite scaffolds have been produced using chitin hydrogel with silver nanoparticles. These scaffolds were also found to have great blood clotting power, which will be useful for wound healing applications ...
Nanoconcentration of terahertz radiation in
Nanoconcentration of terahertz radiation in

[13] S. Ghost, ST Parker, X. Wang, DL Kaplan and JA Lewis
[13] S. Ghost, ST Parker, X. Wang, DL Kaplan and JA Lewis

Rodrigo Aviles‐Espinosa  STRATEGIES FOR PUSHING NONLINEAR MICROSCOPY TOWARDS ITS PERFORMANCE LIMITS
Rodrigo Aviles‐Espinosa  STRATEGIES FOR PUSHING NONLINEAR MICROSCOPY TOWARDS ITS PERFORMANCE LIMITS

... that matches the peak sensitivity of most commercial detectors. This enables reducing up to seven times the light dose applied to a sample while generating an efficient signal without the requirement of amplification schemes and specialized optics (such as the need of ultraviolet grade). To show the ...
PRELIMINARY STUDY ON PHOTONIC CRYSTAL
PRELIMINARY STUDY ON PHOTONIC CRYSTAL

... wavelength (λgap) resulted from photonic pass band in photonic crystal. The photonic pass band in the photonic crystals hinders wavelength on the refractive index material transmitted. On a photonic crystal, there are several layers and interfaces of materials. If any wave reflection by all interfac ...
Optical Comms 2004 (Summer)
Optical Comms 2004 (Summer)

... Loss mechanisms in a Silica Optical Fibre Intrinsic absorption loss: Intrinsic absorption is caused by the interaction of the light with one or more of the components of the glass itself. For silica glass there is a low loss window between 800 and 1600 nm where intrinsic absorption is negligible, by ...
Presentation
Presentation

Microscopes - Biozentrum
Microscopes - Biozentrum

... performance microscopes, the optical configuration of the objective lens and eyepiece are matched to give the best possible optical performance. This occurs most commonly with apochromatic objectives. The objective lens - a cylinder containing one or more lenses, typically made of glass, to collect ...
New insight into light propagation and light
New insight into light propagation and light

... It is a widely-accepted concept in the community that, group velocity is the transport velocity of electromagnetic (EM) signal energy. For example, in their textbook Landau and Lifshitz state that “the physical velocity of propagation of the waves is called the group velocity” [1, p.237]; for resolu ...
EBSD SEM TEM
EBSD SEM TEM

... However, while the angle at which the first minimum occurs (which is sometimes described as the radius of the Airy disk) depends only on wavelength  and aperture size D, the appearance of the diffraction pattern will vary with the intensity (brightness) of the light source. Because any detector (ey ...
Module 01 : Mathematical Physics-I
Module 01 : Mathematical Physics-I

... theorem and its applications to calculate magnetic field due to wire carrying current and solenoid . Unit –III Electromagnetic Induction Laws of Induction, Faraday’s laws and Lanz’s Law. Mutual and Self Induction , Vector potential in varying Magnetic field , Induction of current in continuous media ...
Hasan, Ahmed and Mohiuddin
Hasan, Ahmed and Mohiuddin

... Where λ is the wavelength of the light, K is the Kerr constant, and E is the strength of the electric field. This difference in index of refraction causes the material to act like a wave plate when light is incident on it in a direction perpendicular to the electric field. If the material is placed ...
Three-Dimensional Imaging and Processing Using Computational
Three-Dimensional Imaging and Processing Using Computational

Research paper : FIBER OPTIC CABLES FOR
Research paper : FIBER OPTIC CABLES FOR

A review of the relationships describing the signal of a Large
A review of the relationships describing the signal of a Large

... about the structure functions: •1If the separation r = |rr | is small compared to the outer scale (r ≪ L0 ), then the structure function is determined by the kinematic viscosity ν and the average energy dissipation ǫ. •2If, additionally the separation r is large compared to the inner-scale l0 (i.e. ...
Model of red sprites due to intracloud fractal lightning discharges
Model of red sprites due to intracloud fractal lightning discharges

Multi-Colour and Tunable-Colour Pyroelectric Detectors
Multi-Colour and Tunable-Colour Pyroelectric Detectors

Experimental Realization of Two Decoupled Directional Couplers in a
Experimental Realization of Two Decoupled Directional Couplers in a

Mechanical mapping with chemical specificity by confocal Brillouin
Mechanical mapping with chemical specificity by confocal Brillouin

... stabilized against lateral drifts, which may occur during long time acquisitions. This is realized selecting a reference area within the illuminated region (through the red-yellow boxes in the figures) and using an image recognition software which supplies a feedback signal to the positioning stage. ...
Study of optical characteristics of tin oxide thin film prepared by sol
Study of optical characteristics of tin oxide thin film prepared by sol

... Generally, there are three methods used in sol–gel technique. They are spin coating, dip coating and spray coating. In this study, dip coating method was applied. Starting from tin (II) chloride which was preferred due to low cost as precursor, methanol as solvent and glacial acetic acid as chelatin ...
A new approach for retrieving the UV–vis optical properties of
A new approach for retrieving the UV–vis optical properties of

... and Sherwood, 2010; Koch and Del Genio, 2010; Nabat et al., 2014). Irradiation changes from ERFari and the ERF due to aerosol–cloud interactions (ERFaci) are still two of the largest uncertainties in the understanding of anthropogenic radiative forcing (IPCC, 2013). Radiative transfer models use aer ...
(full text)
(full text)

... nearly perfect absorptance in NbN thin films of the appropriate thickness illuminated at the angle of total internal reflection (TIR) by s-polarized light [5]. As the NbN nanowire arrays are similar to wire-grid polarizers, to analyze their polarization-dependent absorptance, rigorous coupled-wave a ...
Correlated diffraction and fluorescence in the backscattering
Correlated diffraction and fluorescence in the backscattering

... pattern of colors and the disposition of veins suggests the fake presence of feathers. The “birdwings” essentially collect the genera Ornitopthera, Trogonoptera, and Troides 关2–4兴, all placed by animal systematics in the tribe Troidini of the family of true butterflies 共Papilionidae兲. With respect t ...
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Nonlinear optics

Nonlinear optics (NLO) is the branch of optics that describes the behavior of light in nonlinear media, that is, media in which the dielectric polarization P responds nonlinearly to the electric field E of the light. This nonlinearity is typically only observed at very high light intensities (values of the electric field comparable to interatomic electric fields, typically 108 V/m) such as those provided by lasers. Above the Schwinger limit, the vacuum itself is expected to become nonlinear. In nonlinear optics, the superposition principle no longer holds.Nonlinear optics remained unexplored until the discovery of Second harmonic generation shortly after demonstration of the first laser. (Peter Franken et al. at University of Michigan in 1961)
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