Hewitt/Lyons/Suchocki/Yeh, Conceptual Integrated Science
... Diffraction a. Light casts a sharp shadow with some fuzziness at its edges when the opening is large compared with the wavelength of the light. b. When the opening is very narrow, diffraction is more apparent and the shadow is fuzzier. ...
... Diffraction a. Light casts a sharp shadow with some fuzziness at its edges when the opening is large compared with the wavelength of the light. b. When the opening is very narrow, diffraction is more apparent and the shadow is fuzzier. ...
Polarization effects and the calibration of a donut beam axial optical
... imaged on the back aperture of a high-N.A. objective. An aperture is introduced shortly after the SLM to block all but the first-order diffracted light. The sample plane is illuminated by a white-light LED and imaged both via a CCD and through back focal plane interferometry onto a position sensitiv ...
... imaged on the back aperture of a high-N.A. objective. An aperture is introduced shortly after the SLM to block all but the first-order diffracted light. The sample plane is illuminated by a white-light LED and imaged both via a CCD and through back focal plane interferometry onto a position sensitiv ...
File
... photons generated by the injection current travel to the edge mirrors and are reflected back into the active area. • Photoelectron collisions take place and produce more photons, which continue to bounce back and forth between the two edge mirrors. • This process eventually increases the number of g ...
... photons generated by the injection current travel to the edge mirrors and are reflected back into the active area. • Photoelectron collisions take place and produce more photons, which continue to bounce back and forth between the two edge mirrors. • This process eventually increases the number of g ...
Analysing the potential for application of the phase shift method in
... of the interference fringes from the diffraction grating is securing a monochromatic and coherent light source5). The light waves emitted by the LED diodes are monochromatic, which means that they have the same wave length λ, but they are not coherent, i.e. the sinusoidal waves of the light beam do ...
... of the interference fringes from the diffraction grating is securing a monochromatic and coherent light source5). The light waves emitted by the LED diodes are monochromatic, which means that they have the same wave length λ, but they are not coherent, i.e. the sinusoidal waves of the light beam do ...
Part 4 - MZA Associates Corporation
... Each wave has an associated scalar field u=Aeif, represented by a rectangular complex mesh spanning the transverse extent of the wave. The complex phase at each mesh point represents a phase difference, relative to the specified reference wave: fmesh=f-fref Each wave is initially created to model al ...
... Each wave has an associated scalar field u=Aeif, represented by a rectangular complex mesh spanning the transverse extent of the wave. The complex phase at each mesh point represents a phase difference, relative to the specified reference wave: fmesh=f-fref Each wave is initially created to model al ...
How laser works
... "tuned" to the excited electrons' energy is directed through the glass slabs. This laser pulse stimulates the electrons to drop to their lower energy states, or "ground" states, and emit a laser photon of exactly the same wavelength. A system of mirrors at both ends of the laser glass amplifier caus ...
... "tuned" to the excited electrons' energy is directed through the glass slabs. This laser pulse stimulates the electrons to drop to their lower energy states, or "ground" states, and emit a laser photon of exactly the same wavelength. A system of mirrors at both ends of the laser glass amplifier caus ...
Laser Molecular Spectroscopy CHE466 Fall 2007
... sources, because it allows for large energy (or power) flux, i.e. the concentration of many photons in a very small area. The intensity of a laser is defined by the frequency and amount of photons leaving the optical cavity. The net power or energy can be measured using special detectors. The power ...
... sources, because it allows for large energy (or power) flux, i.e. the concentration of many photons in a very small area. The intensity of a laser is defined by the frequency and amount of photons leaving the optical cavity. The net power or energy can be measured using special detectors. The power ...
Document
... 38- Coherent sound source: they are sources whose waves have the same phase and frequency and amplitude 39- Interference fringes: they are dark and bright region produced from interference of 2 coherent waves 40- Diffraction of sound : change of the light waves path on straight lines when it pass th ...
... 38- Coherent sound source: they are sources whose waves have the same phase and frequency and amplitude 39- Interference fringes: they are dark and bright region produced from interference of 2 coherent waves 40- Diffraction of sound : change of the light waves path on straight lines when it pass th ...
JOURNAL OF T O THE EUROPEAN OPTI CAL SOCI ETY
... different points of the source-object. Let us consider the case when the sizes of beams are limited by a single stop, so-called aperture stop. In the case when the aperture stop is located in object space we deal with natural vignetting (also known as a natural illumination fall-off) [1]–[5] (see Fi ...
... different points of the source-object. Let us consider the case when the sizes of beams are limited by a single stop, so-called aperture stop. In the case when the aperture stop is located in object space we deal with natural vignetting (also known as a natural illumination fall-off) [1]–[5] (see Fi ...
A method to generate complex quasi-nondiffracting optical lat
... diverse as trapping of in-vivo and colloidal particles in biophysics [2], atom optics [3], applications of optical lattices for quantum computing [4] and quantum optics at large [5], optical tweezing [6], and nonlinear optics [7,8], to name a few. The patterns used to date correspond only to the kno ...
... diverse as trapping of in-vivo and colloidal particles in biophysics [2], atom optics [3], applications of optical lattices for quantum computing [4] and quantum optics at large [5], optical tweezing [6], and nonlinear optics [7,8], to name a few. The patterns used to date correspond only to the kno ...
Controlling light-with-light without nonlinearity
... Moreover, one will observe that when the intensities of the two beams are equal and the film is located at an antinode, all light entering the metamaterial will be absorbed, while at a node, light transmitted by the film will experience no Joule losses. Here, it should be noted that for fundamental ...
... Moreover, one will observe that when the intensities of the two beams are equal and the film is located at an antinode, all light entering the metamaterial will be absorbed, while at a node, light transmitted by the film will experience no Joule losses. Here, it should be noted that for fundamental ...
Deviation from Snell`s law for beams transmitted
... numerical resonance peak is compared with the calculated value fmax from Eq. (4) and with fmax predicted by Snell’s law. One can see that maximum deviation takes place at uc . In conclusion, we have shown that the transmission direction of a narrow beam through a plane dielectric interface can be qu ...
... numerical resonance peak is compared with the calculated value fmax from Eq. (4) and with fmax predicted by Snell’s law. One can see that maximum deviation takes place at uc . In conclusion, we have shown that the transmission direction of a narrow beam through a plane dielectric interface can be qu ...
A spatial light modulator for ion trapping experiments
... the bit. It can take either of two states, usually denoted as 0 and 1. The actual implementation of a bit is not attached to a single physical quantity and can be achieved in many ways, but it is very often connected to electronic quantities such as current and voltage, e.g a current flowing through ...
... the bit. It can take either of two states, usually denoted as 0 and 1. The actual implementation of a bit is not attached to a single physical quantity and can be achieved in many ways, but it is very often connected to electronic quantities such as current and voltage, e.g a current flowing through ...
n 1n d
... • Synchronous probing of optical and neutron refractive properties • Investigations of sample morphology on the nanoscale • Investigations of structural modifications induced by external fields • Fabrication of 2D and 3D grating structures for neutrons • Assembling of neutron-optical elements ...
... • Synchronous probing of optical and neutron refractive properties • Investigations of sample morphology on the nanoscale • Investigations of structural modifications induced by external fields • Fabrication of 2D and 3D grating structures for neutrons • Assembling of neutron-optical elements ...
Persistent spectral hole burning in an organic material for temporal
... take place in the Fourier-transform space. In the present work, correlation is effected between temporal shapes. The time-to-frequency Fourier transform of the reference pattern is recorded in a persistent spectral holeburning material. The reference image has to include phase and amplitude informat ...
... take place in the Fourier-transform space. In the present work, correlation is effected between temporal shapes. The time-to-frequency Fourier transform of the reference pattern is recorded in a persistent spectral holeburning material. The reference image has to include phase and amplitude informat ...
Holography
Holography is the science and practice of making holograms. Typically, a hologram is a photographic recording of a light field, rather than of an image formed by a lens, and it is used to display a fully three-dimensional image of the holographed subject, which is seen without the aid of special glasses or other intermediate optics. The hologram itself is not an image and it is usually unintelligible when viewed under diffuse ambient light. It is an encoding of the light field as an interference pattern of seemingly random variations in the opacity, density, or surface profile of the photographic medium. When suitably lit, the interference pattern diffracts the light into a reproduction of the original light field and the objects that were in it appear to still be there, exhibiting visual depth cues such as parallax and perspective that change realistically with any change in the relative position of the observer.In its pure form, holography requires the use of laser light for illuminating the subject and for viewing the finished hologram. In a side-by-side comparison under optimal conditions, a holographic image is visually indistinguishable from the actual subject, if the hologram and the subject are lit just as they were at the time of recording. A microscopic level of detail throughout the recorded volume of space can be reproduced. In common practice, however, major image quality compromises are made to eliminate the need for laser illumination when viewing the hologram, and sometimes, to the extent possible, also when making it. Holographic portraiture often resorts to a non-holographic intermediate imaging procedure, to avoid the hazardous high-powered pulsed lasers otherwise needed to optically ""freeze"" living subjects as perfectly as the extremely motion-intolerant holographic recording process requires. Holograms can now also be entirely computer-generated and show objects or scenes that never existed.Holography should not be confused with lenticular and other earlier autostereoscopic 3D display technologies, which can produce superficially similar results but are based on conventional lens imaging. Stage illusions such as Pepper's Ghost and other unusual, baffling, or seemingly magical images are also often incorrectly called holograms.