Beam Dynamics in PT Symmetric Optical Lattices
... ing and as a result the spectrum is partially complex. This happens in spite of the fact that V V is still satisfied. For the particular potential considered here we find that V0th 0:5. More specifically, for V0 < 0:5, the band structure is entirely real while for V0 > 0:5 it becomes c ...
... ing and as a result the spectrum is partially complex. This happens in spite of the fact that V V is still satisfied. For the particular potential considered here we find that V0th 0:5. More specifically, for V0 < 0:5, the band structure is entirely real while for V0 > 0:5 it becomes c ...
Fraunhofer Diffraction
... The passage of light through an aperture or slit and the resulting diffraction patterns can be analyzed using either Fraunhofer or Fresnel diffraction theory. In Fraunhofer (far-field) diffraction theory the source is far enough from the aperture that the wavefronts are planar at the aperture, and t ...
... The passage of light through an aperture or slit and the resulting diffraction patterns can be analyzed using either Fraunhofer or Fresnel diffraction theory. In Fraunhofer (far-field) diffraction theory the source is far enough from the aperture that the wavefronts are planar at the aperture, and t ...
Two-Photon Excited Fluorescence Microscopy - Spectra
... generated everywhere along the optical axis. Upon twophoton absorption at 800 nm, fluorescence is observed exclusively at the focal point of the objective. By using high numerical aperture objectives, fluorescence induced by twophoton absorption can be confined to only a few hundred nanometers of pa ...
... generated everywhere along the optical axis. Upon twophoton absorption at 800 nm, fluorescence is observed exclusively at the focal point of the objective. By using high numerical aperture objectives, fluorescence induced by twophoton absorption can be confined to only a few hundred nanometers of pa ...
Methods and Applications of Optical Holography
... Most impressive appearance of security holograms is the image presented by white-light 3D reflection holograms. They can be viewed in ambient light and represents true three-dimensional image of recorded object. Viewed from different sides it shows different parts of recorded object. Most common exa ...
... Most impressive appearance of security holograms is the image presented by white-light 3D reflection holograms. They can be viewed in ambient light and represents true three-dimensional image of recorded object. Viewed from different sides it shows different parts of recorded object. Most common exa ...
07 Propagation of Waves
... smaller Abbé numbers are ßint glasses, which are “denser”. Examples of glass speciÞcations include Borosilicate crown glass (BSC), which has a speciÞcation number of 517645, so its refractive index in the D line is 1.517 and its Abbé number is 64.5. The speciÞcation number for a common ßint glass is ...
... smaller Abbé numbers are ßint glasses, which are “denser”. Examples of glass speciÞcations include Borosilicate crown glass (BSC), which has a speciÞcation number of 517645, so its refractive index in the D line is 1.517 and its Abbé number is 64.5. The speciÞcation number for a common ßint glass is ...
Role of Color Interference on the Insect`s Cuticle Coloration
... the wings of butterflies and the cuticles of beetles produce brather remarkable colors using arrays of precisely fabricated structures, providing a striking example of pattern formation in biological systems. These elaborate architectures lead to structural colors that are seen in various insects an ...
... the wings of butterflies and the cuticles of beetles produce brather remarkable colors using arrays of precisely fabricated structures, providing a striking example of pattern formation in biological systems. These elaborate architectures lead to structural colors that are seen in various insects an ...
PowerPoint 簡報
... where H n is derived from Hn by replacing all entries with their complements. For example： 成功大學 ...
... where H n is derived from Hn by replacing all entries with their complements. For example： 成功大學 ...
Light, Mirrors, and Lenses
... together forms colors in a different way than mixing colored lights does. Like all materials that appear to be colored, pigments absorb some light waves and reflect others. The color of the pigment you see is the color of the light waves that are reflected from it. However, the primary pigment color ...
... together forms colors in a different way than mixing colored lights does. Like all materials that appear to be colored, pigments absorb some light waves and reflect others. The color of the pigment you see is the color of the light waves that are reflected from it. However, the primary pigment color ...
Optical image recognition of three-dimensional objects
... where k0 is the wave number of the light. kx and ky are the spatial frequencies associated with the coordinates x and y, respectively. p1~x, y! and p2~x, y! are the two pupils located in the front focal planes of lenses L1 and L2, respectively, with focal length f. Note that the two pupils completel ...
... where k0 is the wave number of the light. kx and ky are the spatial frequencies associated with the coordinates x and y, respectively. p1~x, y! and p2~x, y! are the two pupils located in the front focal planes of lenses L1 and L2, respectively, with focal length f. Note that the two pupils completel ...
15-Gb/s Bit-Interleaved Optical Backplane Bus Using Volume
... central receiver possess fixed time delays according to their relative physical locations, we add a tunable time delay chip (SY100EP196 V, Micrel) with resolution better than 5 ps to ensure the total delay difference to be multiples of 400 ps. Since VCSELs emit light even when sending logic 0s, it i ...
... central receiver possess fixed time delays according to their relative physical locations, we add a tunable time delay chip (SY100EP196 V, Micrel) with resolution better than 5 ps to ensure the total delay difference to be multiples of 400 ps. Since VCSELs emit light even when sending logic 0s, it i ...
Lecture 5
... • For most of microfabrication purposes the process (e.g. additive, subtractive or implantation) has to be applied selectively to particular areas of the wafer: patterning is ...
... • For most of microfabrication purposes the process (e.g. additive, subtractive or implantation) has to be applied selectively to particular areas of the wafer: patterning is ...
Tunable properties of light propagation in photonic liquid crystal fibers
... confinement losses is observed. For shorter wavelengths, the losses are almost constant, while for the wavelengths longer than the threshold, the losses are increasing exponentially. For example, the curve corresponding to the LC LC effective refractive index n eff = 1.452 is flat for the wavelength ...
... confinement losses is observed. For shorter wavelengths, the losses are almost constant, while for the wavelengths longer than the threshold, the losses are increasing exponentially. For example, the curve corresponding to the LC LC effective refractive index n eff = 1.452 is flat for the wavelength ...
C f= s moO moo (8)
... from Eq. (11) we see that u(wc,,wy) for a real function f (xy) is bipolar, not complex, when evaluated at (cow,xy) = (pcoo,qwo). Thus a simplified detection scheme can be used, since the output (in 1-D for simplicity) is of the where form u(wcf)lp. = mpip! = (ImpI/p!)exp(j-rn), n = 0 or 1 only. Spec ...
... from Eq. (11) we see that u(wc,,wy) for a real function f (xy) is bipolar, not complex, when evaluated at (cow,xy) = (pcoo,qwo). Thus a simplified detection scheme can be used, since the output (in 1-D for simplicity) is of the where form u(wcf)lp. = mpip! = (ImpI/p!)exp(j-rn), n = 0 or 1 only. Spec ...
full article pdf
... measuring defects of this scale is best accomplished with a calibrated microscope system. But, a microscope with sufficient magnification to properly resolve such small defects will necessarily have a relatively small field of view. This can make it difficult to image the entire length of a scratch, ...
... measuring defects of this scale is best accomplished with a calibrated microscope system. But, a microscope with sufficient magnification to properly resolve such small defects will necessarily have a relatively small field of view. This can make it difficult to image the entire length of a scratch, ...
Light Microscopy
... Achromats are color-corrected for a relatively narrow wavelength range, whereas fluorites and, especially, apochromats are useful over a much larger range. "Flatfield" means that the curvature of field is very small. For objectives that are not of the flat-field type it may be necessary to refocus t ...
... Achromats are color-corrected for a relatively narrow wavelength range, whereas fluorites and, especially, apochromats are useful over a much larger range. "Flatfield" means that the curvature of field is very small. For objectives that are not of the flat-field type it may be necessary to refocus t ...
Polarization effects and the calibration of a donut beam axial optical
... We have shown that, when generating an optical tweezers with a donut beam, the trapping laser’s polarization must be considered with respect to the imprinted topological charge. We have found that the trap strength increases by a factor of 1.44× as the laser polarization goes from being anti-aligned ...
... We have shown that, when generating an optical tweezers with a donut beam, the trapping laser’s polarization must be considered with respect to the imprinted topological charge. We have found that the trap strength increases by a factor of 1.44× as the laser polarization goes from being anti-aligned ...
Optical aberration
.svg?width=300)
An optical aberration is a departure of the performance of an optical system from the predictions of paraxial optics. In an imaging system, it occurs when light from one point of an object does not converge into (or does not diverge from) a single point after transmission through the system. Aberrations occur because the simple paraxial theory is not a completely accurate model of the effect of an optical system on light, rather than due to flaws in the optical elements.Aberration leads to blurring of the image produced by an image-forming optical system. Makers of optical instruments need to correct optical systems to compensate for aberration.The articles on reflection, refraction and caustics discuss the general features of reflected and refracted rays.