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8. Beam splitters
8. Beam splitters

... Dielectric coating beam divider has no absorption qualities so it can be applied to high-power laser systems but as it has great influence on the state of outgoing beams polarization and can be used only in narrow spectrum band or line of monochromatic light. ...
Inverse scattering for frequency-scanned full-field
Inverse scattering for frequency-scanned full-field

... around the focal plane is obtained, and the out-of-focus contributions are removed by coherence gating. The usual technique is then to translate the sample through the focal plane so that the scatterers at many different depths may be imaged and a 3-D structure obtained. While this method can be use ...
Extraordinary optical transmission by interference of diffracted
Extraordinary optical transmission by interference of diffracted

... that formation of these fringes is independent of the state of polarization of incident beam and the intensity ratio for these fringes was also found to be the same, i.e., I/I0 ~ 3.7. These observations on polarization effect on fringe formation are in agreement with the results reported in referenc ...
G060203-00-D
G060203-00-D

... » matching circuit components: inside vs outside the crystal housing” ...
The Influence of Detector Active Area on Sensitivity and Noise
The Influence of Detector Active Area on Sensitivity and Noise

... sensitivity. Occasionally, the active area is called "crystal size" or "electrode size" since these factors basically define the active area. However, these terms can be misleading. We’re better off looking at the detector from the outside and testing where and in which area the detector is sensitiv ...
Modulators-Isolators
Modulators-Isolators

... Matching circuits: for higher frequencies, better to put the matching circuit in the crystal housing » Driving the cable at high frequencies is difficult ...
3D differential interference contrast microscopy using synthetic
3D differential interference contrast microscopy using synthetic

... x-axis Opposite is the case for the structure indicated by a blue arrow. This shows the strength of aperture synthesis in post-processing. In addition to the contrast enhancement, we also implement depth-selective visualization by angular spectrum method (Chapter 3 in Goodman).10 Conventional hologr ...
Document
Document

... Matching circuits: for higher frequencies, better to put the matching circuit in the crystal housing » Driving the cable at high frequencies is difficult ...
TUPB049
TUPB049

... of field on the horizontal beam size measurements analyzing the visibility distribution as a function of the pinholes separation. On the other hand the efficiency of vertical beam size measurements was proved performing coupling scans and verifying that interferometry was able to reproduce the resul ...
1489_1.pdf
1489_1.pdf

... and the direction of the incident wave is shown as a black arrow. Diffraction patterns of the LdfL-waves with incident angles from 0° to 60° are shown in Fig.2(a) and diffraction patterns of the SdfS-waves with the same range of incident angles are shown in Fig.2(b). The maximum amplitude of the Ldf ...
Analysis of the Spectral Resolution of a TeO2 based Noncollinear
Analysis of the Spectral Resolution of a TeO2 based Noncollinear

... wave modes can propagate in TeO2 crystal. They are right-handed elliptical polarized mode and left-handed elliptical polarized one, and the direction of the ellipse’ long axes on these two modes are parallel with the main plane and perpendicular to the main plane, respectively. If the incident beam ...
Breakup and Fusion of Self-Guided Femtosecond Light Pulses in Air
Breakup and Fusion of Self-Guided Femtosecond Light Pulses in Air

... axis in two symmetric spots that finally fuse into one central lobe. Ring and two-spot formation mainly results from the Kerr filamentation, which is triggered by small-scale inhomogeneities. In this regard, numerical simulations using the experimentally recorded beam profiles instead of unperturbed ...
LETTERS
LETTERS

... integration of the optical Bloch equations for a two-level system with a time dependent two-photon Rabi frequency. In our case, the calculated peak two-photon Rabi frequency is V2 y2p ­ 30 kHz, and the predicted width is 0.08h̄k, a factor of 2 less than measured. We do not have an explanation for th ...
Crystal structure
Crystal structure

...  The resulting variation in Θ brings difference lattice planes into position for reflection and diffracted images are recorded. ...
Document
Document

...  The N measurements can be taken over N pixels within the same image, which characterizes the noise spatially, or over N values of the same pixel in a timeseries, which defines the noise temporally.  The standard deviation  is also commonly used and has the benefit of carrying the same units as ...
Fold geometry
Fold geometry

... interstitals, atom between sites latter two can tangle (block) dislocations Defects move by diffusion (cm2/s) of atoms in lattice (volume diffusion) D = Do exp (-E/RT) E = activation energy (kJoules/mol); T = temperature; R = gas constant Do: experimental constant Plot of ln D vs. 1/T = line (slope ...
Measuring amplitude and phase of light emerging from
Measuring amplitude and phase of light emerging from

... Amplitude and phase fields of light emerging from periodic structures, although considered by many researchers, are still an interesting subject of research. Talbot observed the self-imaging effect of a periodic structure in 18364. Later, Lord Rayleigh showed that its origin is the interference of t ...
principles of recording image-matrix holographic stereogram
principles of recording image-matrix holographic stereogram

... The principle of dot-matrix holography is based on decomposition of a hologram image into a two-dimensional array of elementary pixels containing diffraction gratings with parameters that need mathematical calculation. Their size usually lies in the range of 10-100 m and depends on the technology o ...
CONTENTS Optic Axis Principal Section of a Crystal Geometry of
CONTENTS Optic Axis Principal Section of a Crystal Geometry of

... the optic axis of the crystal. Since the speed of light wave in a medium is the ratio of its speed in vacuum and the index of refraction for that wavelength, an E-ray can move either faster or slower than an O-ray. • However, the velocity of O-ray inside the crystal is same in all the directions whi ...
Double-pass acousto-optic modulator system
Double-pass acousto-optic modulator system

... time scales shorter than 1 ms, and it may be that laser beams with several different frequencies must be produced from a single laser source. Acousto-optic modulators 共AOMs兲 are widely used to accomplish the frequency control in laser cooling experiments. When the laser frequency is scanned with an ...
Guerra F., Leone M., Robotti N. The discovery of X
Guerra F., Leone M., Robotti N. The discovery of X

... parallelepiped may thus have any lengths and be inclined at any angles to one other). The comparison of the theory with the experimental data was done by Laue in the simplest case, namely that of zinc blende. He arrived at the conclusion that the diagrams were perfectly explainable on the assumption ...
Holography
Holography

... This sort of hologram is effectively a concave lens, since it "converts" a plane wavefront into a divergent wavefront. It will also increase the divergence of any wave which is incident on it in exactly the same way as a normal lens does. Its focal length is the distance between the point source an ...


... figure 2 above. A light ray traversing a plate of material with parallel entrance and exit faces is displaced laterally without a change in direction. This displacement effect is very useful for laser surveying and laser control of instruments. With high-quality apparatus, displacements as small as ...
CH915: Elemental Analysis
CH915: Elemental Analysis

... of wavelengths exiting the monochromator Related to dispersion and slit widths Defines resolution of spectra: 2 features can only be distinguished if effective bandwidth is less than half the difference between the l of features ...
Nanostructured Membrane and Porous Catalysts Prepared Using
Nanostructured Membrane and Porous Catalysts Prepared Using

... In Situ QCM during Atomic Layer Deposition of In2O3  ~0.01 ML sensitivity  Real time, in situ  Directly measures mass (ng/cm2)  Assume density to get film thickness  Reveals nucleation and growth regimes  Sensitive to temperature ...
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Diffraction topography

Diffraction topography (short: ""topography"") is an quantum beam imaging technique based on Bragg diffraction.Diffraction topographic images (""topographies"") record the intensity profile of a beam of X-rays (or, sometimes, neutrons) diffracted by a crystal.A topography thus represents a two-dimensional spatial intensity mapping of reflected X-rays, i.e. the spatial fine structure of a Laue reflection.This intensity mapping reflects the distribution of scattering power inside the crystal; topographs therefore reveal the irregularities in a non-ideal crystal lattice.X-ray diffraction topography is one variant of X-ray imaging, making use of diffraction contrast rather than absorption contrast which is usually used in radiography and computed tomography (CT). Topography is exploited to a lesser extends with neutrons and other quantum beams. In the electron microscope community, such technique is called dark field imaging or diffraction contrast imaging.Topography is used for monitoring crystal quality and visualizing defects in many different crystalline materials.It has proved helpful e.g. when developing new crystal growth methods, for monitoring growth and the crystal quality achieved, and for iteratively optimizing growth conditions.In many cases, topography can be applied without preparing or otherwise damaging the sample; it is therefore one variant of non-destructive testing.
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