OM1 - Faculty of Engineering
... The two rays reaching the observer Ob from a point P on the source are not no longer parallel, but appear to diverge from a point P’ near the mirrors (note the schematic is drawn not in scale). For various positions of P on the extended source, it can be showed that the path difference between the t ...
... The two rays reaching the observer Ob from a point P on the source are not no longer parallel, but appear to diverge from a point P’ near the mirrors (note the schematic is drawn not in scale). For various positions of P on the extended source, it can be showed that the path difference between the t ...
OPTICAL FILTER COATINGS
... between coated surfaces which define the cavity. Each transmitted wavefront has undergone an even number of reflections (0, 2, 4, . . . ). Whenever there is no phase difference between emerging wavefronts, interference between these wavefronts produces a transmission maximum. This occurs when the op ...
... between coated surfaces which define the cavity. Each transmitted wavefront has undergone an even number of reflections (0, 2, 4, . . . ). Whenever there is no phase difference between emerging wavefronts, interference between these wavefronts produces a transmission maximum. This occurs when the op ...
Isolated object invisibility cloak in the visible light
... moves in a clockwise direction. The same rotation is applied for the boundaries at the other regions filled with Segment I medium. When B2 and B3 both coincide with the symmetric line of the triangle of Region 2, Region 2 disappears. As we apply the same rotation to the boundaries at all the regions ...
... moves in a clockwise direction. The same rotation is applied for the boundaries at the other regions filled with Segment I medium. When B2 and B3 both coincide with the symmetric line of the triangle of Region 2, Region 2 disappears. As we apply the same rotation to the boundaries at all the regions ...
Diffractive optical element and optical pickup apparatus
... detectors 13b disposed on both sides thereof. On the top face ofthe module 13, a third hologram 130 is disposed as ifa lid thereof. The third semiconductor laser 13a emits leftWard as seen in the ?gure a light beam 210 (indicated by dash-and-dot lines) of a Wavelength 7~3I780 nm. In this embodiment, ...
... detectors 13b disposed on both sides thereof. On the top face ofthe module 13, a third hologram 130 is disposed as ifa lid thereof. The third semiconductor laser 13a emits leftWard as seen in the ?gure a light beam 210 (indicated by dash-and-dot lines) of a Wavelength 7~3I780 nm. In this embodiment, ...
Recent advances in transformation optics
... Yang et al. proposed a superscatter which can enhance the electromagnetic wave scattering cross section, so that it appears as a scatter with a larger dimension.52 Subsequently, Chan’s group theoretically conceived and numerically demonstrated a general concept of illusion optics: making an arbitrar ...
... Yang et al. proposed a superscatter which can enhance the electromagnetic wave scattering cross section, so that it appears as a scatter with a larger dimension.52 Subsequently, Chan’s group theoretically conceived and numerically demonstrated a general concept of illusion optics: making an arbitrar ...
optical coherence tomography
... were obtained from holographically recorded scattered field data nearly two decades ago.9,10 These first attempts, however, were not further extended at that time because no spatially coherent broadband light sources were available. Later, with the availability of spatially coherent broadband light ...
... were obtained from holographically recorded scattered field data nearly two decades ago.9,10 These first attempts, however, were not further extended at that time because no spatially coherent broadband light sources were available. Later, with the availability of spatially coherent broadband light ...
Automotive Optical Solutions for the Automotive
... Due to the lack of commercially available high vacuum equipment, Balzers had to design and build most of the required vacuum components, equipment and systems necessary for the development of its novel and proprietary thin-film coating processes. Today Optics Balzers is a globally recognized leader ...
... Due to the lack of commercially available high vacuum equipment, Balzers had to design and build most of the required vacuum components, equipment and systems necessary for the development of its novel and proprietary thin-film coating processes. Today Optics Balzers is a globally recognized leader ...
Enhancing four-wave-mixing processes by nanowire arrays coupled to a gold film Ekaterina Poutrina,
... metals, which exhibit some of the largest known values for χ (3) [14, 15]. The third-order nonlinear susceptibility in metals arises from both the nonlinear polarization induced by the motion of bulk valence electrons, as well as from the surface polarization [15–18]. Leveraging the intrinsic nonlin ...
... metals, which exhibit some of the largest known values for χ (3) [14, 15]. The third-order nonlinear susceptibility in metals arises from both the nonlinear polarization induced by the motion of bulk valence electrons, as well as from the surface polarization [15–18]. Leveraging the intrinsic nonlin ...
Topic 8: Holography
... The reference and object illumination beam are combined and the object beam is reflected back from the objects. ...
... The reference and object illumination beam are combined and the object beam is reflected back from the objects. ...
Evolutionary optimization of layouts for high density free space
... the desired range, f (m) depends on the aberrations of the optical path lengths from the average optical path length and lies between 0 (because the aberrations of the optical path lengths resulting from the method described above can be considered to be less than 1) and 100. The value 100 is chosen ...
... the desired range, f (m) depends on the aberrations of the optical path lengths from the average optical path length and lies between 0 (because the aberrations of the optical path lengths resulting from the method described above can be considered to be less than 1) and 100. The value 100 is chosen ...
Macroscopic effects in noncollinear high-order
... field, and the interference pattern depends on their relative phase. The main contribution to this phase difference is due to the single atom response and can be expressed as Δφs ¼ αq ðI A − I B Þ, where αq I denotes the harmonic dipole phase [28] at a corresponding driving field intensity I. When t ...
... field, and the interference pattern depends on their relative phase. The main contribution to this phase difference is due to the single atom response and can be expressed as Δφs ¼ αq ðI A − I B Þ, where αq I denotes the harmonic dipole phase [28] at a corresponding driving field intensity I. When t ...
A simple peak-to-average power ratio reduction
... transmission systems, for its high spectral efficiency, relatively low bit rate and advanced robustness against chromatic dispersion and polarization mode dispersion [1-3]. Conventional optical OFDM systems utilize electronic fast Fourier transform (FFT) circuits and complicated digital to analog (D ...
... transmission systems, for its high spectral efficiency, relatively low bit rate and advanced robustness against chromatic dispersion and polarization mode dispersion [1-3]. Conventional optical OFDM systems utilize electronic fast Fourier transform (FFT) circuits and complicated digital to analog (D ...
materials Volume Holograms in Photopolymers: Comparison between Analytical and Rigorous Theories
... Now, Equation (12) has only two significant parameters, Ω and P. The influence of Ω and P can easily be interpreted from Equation (12). Coupling from one order to the two adjacent ones takes place through the last term of this equation. The importance of this term grows as Ω decreases, diminishing t ...
... Now, Equation (12) has only two significant parameters, Ω and P. The influence of Ω and P can easily be interpreted from Equation (12). Coupling from one order to the two adjacent ones takes place through the last term of this equation. The importance of this term grows as Ω decreases, diminishing t ...
Synchronization of Micromechanical Oscillators Using Light
... the two OMOs form the basis for entrainment and the onset of synchronized oscillation [35, 36] (see SI for details). We control the degree of optical coupling between the L and R OMOs by thermo-optic tuning of the optical resonant frequencies. Note that the maximum optical coupling between the two O ...
... the two OMOs form the basis for entrainment and the onset of synchronized oscillation [35, 36] (see SI for details). We control the degree of optical coupling between the L and R OMOs by thermo-optic tuning of the optical resonant frequencies. Note that the maximum optical coupling between the two O ...
Enhanced 3D spatial resolution in quantitative phase
... Quantitative phase imaging is commonly used with coherent illumination because it allows a relatively simple interpretation of the measurement, but the drawback is that it also genarates speckle distribution in the images. Only a few techniques can deal with a low temporal coherent source [6,7,9,11, ...
... Quantitative phase imaging is commonly used with coherent illumination because it allows a relatively simple interpretation of the measurement, but the drawback is that it also genarates speckle distribution in the images. Only a few techniques can deal with a low temporal coherent source [6,7,9,11, ...
Optical aberration
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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.