TEM - UiO
... A diffraction pattern is always formed at the back focal plane of the objective (even in OM). To view this diffraction pattern one has to change the excitation of the intermediate lens. A higher strength projects the specimen image on the screen, a lower strength project the DP. The optical system o ...
... A diffraction pattern is always formed at the back focal plane of the objective (even in OM). To view this diffraction pattern one has to change the excitation of the intermediate lens. A higher strength projects the specimen image on the screen, a lower strength project the DP. The optical system o ...
A high resolution ion microscope for cold atoms
... on a camera. However, the cloud is destroyed by this method. The destruction can be suppressed when using the related method of phase contrast imaging, allowing to image the same cloud several times [6], yet at a reduced contrast. For non-destructive imaging of dilute samples with single atom sensit ...
... on a camera. However, the cloud is destroyed by this method. The destruction can be suppressed when using the related method of phase contrast imaging, allowing to image the same cloud several times [6], yet at a reduced contrast. For non-destructive imaging of dilute samples with single atom sensit ...
Transfer of orbital angular momentum on a macroscopic object
... satellite communications), because the far field radiation pattern in front of the antennas has a circular polarization. The turnstile antenna is also used in broadcast applications, where there is a need for horizontal (linear) polarization with uniform (isotropic) radiation pattern around the ante ...
... satellite communications), because the far field radiation pattern in front of the antennas has a circular polarization. The turnstile antenna is also used in broadcast applications, where there is a need for horizontal (linear) polarization with uniform (isotropic) radiation pattern around the ante ...
Apparatus and method for producing holograms with acoustic waves
... Referring now to FIGURE 3, the spatial frequency ?ected from the object. The output of the microphone on line 15 is ampli?ed ‘by ampli?er 16 and ?ltered by narrow f0 of acoustic waves incident on detection plane D'— D’ at the angle 6 is representable as in = l/Ao sin '7 band ?lter 17. The center fre ...
... Referring now to FIGURE 3, the spatial frequency ?ected from the object. The output of the microphone on line 15 is ampli?ed ‘by ampli?er 16 and ?ltered by narrow f0 of acoustic waves incident on detection plane D'— D’ at the angle 6 is representable as in = l/Ao sin '7 band ?lter 17. The center fre ...
Aberration-Free Ultrathin Flat Lenses and Axicons at Telecom
... Figure 1. Schematic showing the design of flat lenses and axicons. In order to focus a plane wave to a single point at distance f from the metasurface, a hyperboloidal phase profile must be imparted onto the incident wavefront. (a) The phase shift at a point PL on the lens surface is proportional to t ...
... Figure 1. Schematic showing the design of flat lenses and axicons. In order to focus a plane wave to a single point at distance f from the metasurface, a hyperboloidal phase profile must be imparted onto the incident wavefront. (a) The phase shift at a point PL on the lens surface is proportional to t ...
three-dimensional solutions in media with spatial dependence of
... focusing regime of propagation optical rings, can be generated but they are modulationally unstable [13,14]. One alternative way of stabilizing optical vortices in 2D and 3D case, using saturable [15, 16] or cubic–quintic [17, 18] nonlinearity, was also discussed. On the other hand, the experiments ...
... focusing regime of propagation optical rings, can be generated but they are modulationally unstable [13,14]. One alternative way of stabilizing optical vortices in 2D and 3D case, using saturable [15, 16] or cubic–quintic [17, 18] nonlinearity, was also discussed. On the other hand, the experiments ...
Advances in Environmental Biology
... (FDTD) and finite element (FEM) techniques can be mentioned. FDTD method is a high-resolution code which is performed in time domain. Time consuming and instability are regarded as the most important disadvantages of this numerical technique. Moreover, it is required to mesh the simulation space as ...
... (FDTD) and finite element (FEM) techniques can be mentioned. FDTD method is a high-resolution code which is performed in time domain. Time consuming and instability are regarded as the most important disadvantages of this numerical technique. Moreover, it is required to mesh the simulation space as ...
POLARIZATION OF LIGHT
... In addition, a extraordinary ray does not lie, as a rule, in the same plane as an incident ray and a normal to the refracting surface. Examples of uniaxial crystals are Iceland spar, quartz, and tourmaline. In biaxial crystals (mica, gypsum), both rays are extraordinary - the refracting indices for ...
... In addition, a extraordinary ray does not lie, as a rule, in the same plane as an incident ray and a normal to the refracting surface. Examples of uniaxial crystals are Iceland spar, quartz, and tourmaline. In biaxial crystals (mica, gypsum), both rays are extraordinary - the refracting indices for ...
image
... number (ε «1 rad). The range of validity of this approximation typically extends up to ~10-30 degrees, depending on the desired degree of accuracy. This regime is also known as “Gaussian optics” or ...
... number (ε «1 rad). The range of validity of this approximation typically extends up to ~10-30 degrees, depending on the desired degree of accuracy. This regime is also known as “Gaussian optics” or ...