Effect of quadratic radial phase variation in the plane of the aperture on Fraunhofer diffraction of Laguerre鈥揋auss vortex beams by a slit is studied experimentally. For slit positions near the incident beam w
1. Introduction Under the action of a dynamic load, especially an explosion impact load, damage of explosion-proof walls is a complex problem, involving the diffraction law of shock-wave overpressure, analysis of the effects of detonation and energy absorption, the influence of structure and materi...
To test the accuracy of equation 21 as parameterized by Liu (2013), we used macroscopic data on the swelling pressure of confined water-saturated Na-smectite as a function of compaction and salinity (Figure 3b) as well as X-ray diffraction measurements of h versus salinity (Figure 3c). Figu...
The results presented correspond to the case in which one bright fringe passes through the slit with the field amplitude at the edges of the slit being equal to zero. As a result, diffraction effects are considerably diminished and the diffracted beam behaves, approximately, as pseudo-non-...
[3–7], and polarizing color filters [8,9]. On the other hand, the fabrication has been very mature. It could be manufactured on different materials such as soft-composite materials which could find attractive applications in LCD [10,11]. Diffraction grating also is used in optical ...
optical performance will be degraded below the diffraction limit at around NA=0.4. This value has been confirmed by ZEMAX simulation. As it is particularly desired to have diffraction-limited performance, a miniature microscope objective for MMA according to a preferred embodiment has NA=0.4 or more...
describes a tunable, multiple frequency laser diode that uses a multistripe semiconductor laser array to generate several wavelengths, and requires a grazing incidence angle on the diffraction grating. Using the grazing incidence angle prevents simultaneous wavelength generation. U.S. Pat. No. 5,524,...
The wave function evident on the diffraction plane is the Fourier transformed (FT) form of the transmitted wave function. The integrated square of the absolute value of the wave function is the measured signal. In STEM mode, a convergent-beam diffraction pattern is formed on the back-focal ...
Although the slit geometry is to some extent similar to that of previously developed conical slits or spiral slits, this new design has advantages over the previous ones in use for complex heterogeneous materials and in situ and operando diffraction measurements. For example, the slits can measure...
Those simulation researches have contributed to understand adsorption of N2 by activated carbon. The model of a slit-pore between perfect crystalline graphite slabs is used in ordinary simulations[I-4]. However, real activated carbon is composed of micrographites of which structure ~s more ...