2. - ACMAC
... an electron), as originally suggested by Berry and Balzas? Will this wave-packet exhibit free-acceleration, shape preservation and self healing? ...
... an electron), as originally suggested by Berry and Balzas? Will this wave-packet exhibit free-acceleration, shape preservation and self healing? ...
Phys. Rev. Lett. 101, 076101 - APS Link Manager
... image of the polystyrene spheres in Fig. 4 is the average over 20 iterations from a single reconstruction after the convergence error leveled off at <1%. Because of the full penetration of x rays through the polystyrene spheres, their thickness profile is revealed, and the intensity ratio 3:1 of the ...
... image of the polystyrene spheres in Fig. 4 is the average over 20 iterations from a single reconstruction after the convergence error leveled off at <1%. Because of the full penetration of x rays through the polystyrene spheres, their thickness profile is revealed, and the intensity ratio 3:1 of the ...
Advanced Optics Lab at San Jose State University Ramen
... illuminate a substantial part of the grating which will result in higher resolution. • (b) building a telescope The students select two doublet lenses for the telescope keeping in mind the fact that they have to overfill the pupil of their eyes so that the spectrum does not disappear on moving one's ...
... illuminate a substantial part of the grating which will result in higher resolution. • (b) building a telescope The students select two doublet lenses for the telescope keeping in mind the fact that they have to overfill the pupil of their eyes so that the spectrum does not disappear on moving one's ...
Physical Optics - Haverford College
... of stars close to one another can give a measure of the diffraction limits of a system which is called the Rayleigh resolution. The resolution of a system can be determined by the smallest angular separation between such sources that still allows them to be distinguished. A limit of the resolution t ...
... of stars close to one another can give a measure of the diffraction limits of a system which is called the Rayleigh resolution. The resolution of a system can be determined by the smallest angular separation between such sources that still allows them to be distinguished. A limit of the resolution t ...
On the diffraction limit for lensless imaging
... Rayleigh did not explicitly state the image size corresponding to this value of u. However, he showed that, for any aperture diameter 2a and in the limit ro » r, the greatest path difference at the point P in Fig. 1 is laclr, so that ''the illumination will not be greatly reduced until the extreme d ...
... Rayleigh did not explicitly state the image size corresponding to this value of u. However, he showed that, for any aperture diameter 2a and in the limit ro » r, the greatest path difference at the point P in Fig. 1 is laclr, so that ''the illumination will not be greatly reduced until the extreme d ...
Chapter 25
... distinguish between closely spaced objects is limited due to the wave nature of light If two sources of light are close together, they can be treated as noncoherent sources Because of diffraction, the images consist of bright central regions flanked by weaker bright and dark rings ...
... distinguish between closely spaced objects is limited due to the wave nature of light If two sources of light are close together, they can be treated as noncoherent sources Because of diffraction, the images consist of bright central regions flanked by weaker bright and dark rings ...
Tutor 4
... limited definition of resolution, the smallest feature which can be printed, and to describe, in a very limited way, how phase-shifting masks and off-axis illumination work. From the limited perspective of image formation, a reasonably straightforward definition of resolution is possible. Consider t ...
... limited definition of resolution, the smallest feature which can be printed, and to describe, in a very limited way, how phase-shifting masks and off-axis illumination work. From the limited perspective of image formation, a reasonably straightforward definition of resolution is possible. Consider t ...
Beam-Based Diagnostics - Stanford Synchrotron Radiation
... Charged particle storage rings are used for a variety of science and technology applications --- for example as synchrotron radiation light sources for biology, chemistry, and materials science, as colliders for high-energy physics or as damping rings to reduce the beam emittance for linear collider ...
... Charged particle storage rings are used for a variety of science and technology applications --- for example as synchrotron radiation light sources for biology, chemistry, and materials science, as colliders for high-energy physics or as damping rings to reduce the beam emittance for linear collider ...
Conjugate Ratio:
... The first approximation we can make is to replace all sine functions with their arguments (i.e., replace sin θ 1 with θ 1 itself and so on). This is called first-order or paraxial theory because only the first terms of the sine expansions are used. Design of any optical system starts with this appro ...
... The first approximation we can make is to replace all sine functions with their arguments (i.e., replace sin θ 1 with θ 1 itself and so on). This is called first-order or paraxial theory because only the first terms of the sine expansions are used. Design of any optical system starts with this appro ...
Airy disk
In optics, the Airy disk (or Airy disc) and Airy pattern are descriptions of the best focused spot of light that a perfect lens with a circular aperture can make, limited by the diffraction of light. The Airy disk is of importance in physics, optics, and astronomy.The diffraction pattern resulting from a uniformly-illuminated circular aperture has a bright region in the center, known as the Airy disk which together with the series of concentric bright rings around is called the Airy pattern. Both are named after George Biddell Airy. The disk and rings phenomenon had been known prior to Airy; John Herschel described the appearance of a bright star seen through a telescope under high magnification for an 1828 article on light for the Encyclopedia Metropolitana:...the star is then seen (in favourable circumstances of tranquil atmosphere, uniform temperature, &c.) as a perfectly round, well-defined planetary disc, surrounded by two, three, or more alternately dark and bright rings, which, if examined attentively, are seen to be slightly coloured at their borders. They succeed each other nearly at equal intervals round the central disc....However, Airy wrote the first full theoretical treatment explaining the phenomenon (his 1835 ""On the Diffraction of an Object-glass with Circular Aperture"").Mathematically, the diffraction pattern is characterized by the wavelength of light illuminating the circular aperture, and the aperture's size. The appearance of the diffraction pattern is additionally characterized by the sensitivity of the eye or other detector used to observe the pattern.The most important application of this concept is in cameras and telescopes. Owing to diffraction, the smallest point to which a lens or mirror can focus a beam of light is the size of the Airy disk. Even if one were able to make a perfect lens, there is still a limit to the resolution of an image created by this lens. An optical system in which the resolution is no longer limited by imperfections in the lenses but only by diffraction is said to be diffraction limited.