Performance of extended depth of field systems and
... by digital processing. Many pupils have been designed to implement WFC; they all propose different trade-offs between MTF and DOF. In this paper, we demonstrate that for any symmetric revolution optic there is an absolute trade-off between MTF and DOF. This limit is fixed by diffraction and conseque ...
... by digital processing. Many pupils have been designed to implement WFC; they all propose different trade-offs between MTF and DOF. In this paper, we demonstrate that for any symmetric revolution optic there is an absolute trade-off between MTF and DOF. This limit is fixed by diffraction and conseque ...
Introducing the NextWindow 1900 Optical Touch Screen
... Multi-touch is the ability to simultaneously touch in more than one location and have multiple touch points reported. Of the eight existing touch technologies, only three are capable of supporting multi-touch: optical, infrared and projected capacitive. Although historically there hasn’t been much d ...
... Multi-touch is the ability to simultaneously touch in more than one location and have multiple touch points reported. Of the eight existing touch technologies, only three are capable of supporting multi-touch: optical, infrared and projected capacitive. Although historically there hasn’t been much d ...
Phase-conjugated twin waves for communication
... by coherent superposition of the twin waves. A more detailed description of the experimental set-up is presented in the Methods. At the medium power level corresponding to FNL ≈ 0.6 rad, the overall signal variance (s2) is reduced by over tenfold upon coherent superposition of the recovered PCTWs (F ...
... by coherent superposition of the twin waves. A more detailed description of the experimental set-up is presented in the Methods. At the medium power level corresponding to FNL ≈ 0.6 rad, the overall signal variance (s2) is reduced by over tenfold upon coherent superposition of the recovered PCTWs (F ...
Birefringence dispersion in fused silica for DUV lithography
... stepper systems have been two of the driving forces towards production of integrated circuits with smaller feature sizes. Fused silica lens elements in current lithography tools possess high internal transmission, high index homogeneity, low induced absorption and low birefringence. While absorption ...
... stepper systems have been two of the driving forces towards production of integrated circuits with smaller feature sizes. Fused silica lens elements in current lithography tools possess high internal transmission, high index homogeneity, low induced absorption and low birefringence. While absorption ...
Diffusing-wave spectroscopy in a shear flow
... times. We emphasize that no unscattered light was detected. In the backscattering geometry, the sample was illuminated by a uniform beam, 1 cm in diameter, from an argonion laser ( = 488 nm); light was collected from a 50-Amdiameter spot near the center of the illuminated area on the same side of th ...
... times. We emphasize that no unscattered light was detected. In the backscattering geometry, the sample was illuminated by a uniform beam, 1 cm in diameter, from an argonion laser ( = 488 nm); light was collected from a 50-Amdiameter spot near the center of the illuminated area on the same side of th ...
Calculations of light scattering from isolated and interacting metallic
... In the case of s polarization, the only nonzero component of the near electric field is directly obtained from Eqs. (7a) and (8b) once the source functions (9) are known from Eqs. (10). If the near/surface magnetic fields were needed, their components could be easily calculated as in Eqs. (12) and ( ...
... In the case of s polarization, the only nonzero component of the near electric field is directly obtained from Eqs. (7a) and (8b) once the source functions (9) are known from Eqs. (10). If the near/surface magnetic fields were needed, their components could be easily calculated as in Eqs. (12) and ( ...
Microscopes - Photonics Research Group
... with video microscopy. The location of the Airy disk can, in fact, be established with very high precision. Distances between lines that are clearly isolated from each other can, therefore be measured to a precision much greater than the resolution limit of the microscope. Also, minute movements of ...
... with video microscopy. The location of the Airy disk can, in fact, be established with very high precision. Distances between lines that are clearly isolated from each other can, therefore be measured to a precision much greater than the resolution limit of the microscope. Also, minute movements of ...
Heuristic Green`s function of the time dependent
... that, in their migration, undergo many scattering events [8]. Conversely, by exploiting an RTE solution it can be foreseen to overcome the limits of the DE and to immediately obtain a twofold improvement: (i) the error determined by approximations of the theory would be drastically reduced, therefo ...
... that, in their migration, undergo many scattering events [8]. Conversely, by exploiting an RTE solution it can be foreseen to overcome the limits of the DE and to immediately obtain a twofold improvement: (i) the error determined by approximations of the theory would be drastically reduced, therefo ...
Small-core chalcogenide microstructured fibers for the infrared
... nonlinear properties. The index of refraction is 2.37 at 1:55 μm, and the n2 is very similar to that of the 2S2G glass (3.2 10–18 m2 =W at 1064 nm, 120 times higher than that of silica glass) [10]. The glass is transparent for bulk samples between 600 nm and 11 μm, giving the glass a red color. The ...
... nonlinear properties. The index of refraction is 2.37 at 1:55 μm, and the n2 is very similar to that of the 2S2G glass (3.2 10–18 m2 =W at 1064 nm, 120 times higher than that of silica glass) [10]. The glass is transparent for bulk samples between 600 nm and 11 μm, giving the glass a red color. The ...
amplitude transfer function
... our analysis has been “diffraction–limited” • Aberration effects on the MTF are FoV (field) location–dependent: typically we get more blur near the edges of the field (narrower MTF ⇔broader PSF) • This, in addition, means that real–life optical systems are not shift invariant either! • ⇒ the concept ...
... our analysis has been “diffraction–limited” • Aberration effects on the MTF are FoV (field) location–dependent: typically we get more blur near the edges of the field (narrower MTF ⇔broader PSF) • This, in addition, means that real–life optical systems are not shift invariant either! • ⇒ the concept ...
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... range of physical parameters. In some cases, two independent DMs coexist. Their linear superposition can lead to different phase and intensity patterns. A typical example corresponding to point D in Fig. 4(a) is shown in Figs. 4(b) and 4(c), which was obtained at I0 3 and " 0:1. Point D lies in ...
... range of physical parameters. In some cases, two independent DMs coexist. Their linear superposition can lead to different phase and intensity patterns. A typical example corresponding to point D in Fig. 4(a) is shown in Figs. 4(b) and 4(c), which was obtained at I0 3 and " 0:1. Point D lies in ...
Light fan driven by relativistic laser pulse
... corresponding to L = 2.0×10-17 kg m2 s-1 is about ω = 7×108 rad s-1. It can be one order higher than man-made rotational speed record 6×107 rad s-1, which is also laser-induced [21]. The rotation of the plasma after the laser pulse leaves may be used to simulate the pulsars [15]. Fig. 3(b) (red plu ...
... corresponding to L = 2.0×10-17 kg m2 s-1 is about ω = 7×108 rad s-1. It can be one order higher than man-made rotational speed record 6×107 rad s-1, which is also laser-induced [21]. The rotation of the plasma after the laser pulse leaves may be used to simulate the pulsars [15]. Fig. 3(b) (red plu ...
Министерство высшего и среднего специального образования
... The corpuscular model of light does not afford any simple interpretation of interference phenomena. The wave model, however, suggests a most natural interpretation. Indeed, the phenomena observed when two light beams are superimposed are closely analogous to those associated with the superposition o ...
... The corpuscular model of light does not afford any simple interpretation of interference phenomena. The wave model, however, suggests a most natural interpretation. Indeed, the phenomena observed when two light beams are superimposed are closely analogous to those associated with the superposition o ...
Development and application of new high
... is based on a significantly different resonator concept and will be called “InnoSlab”. The “InnoSlab” is the youngest concept of diode pumped solid state lasers of the second generation.6) Side pumped slab: The laser emission is gain guided and parasitic modes–living outside the fundamental mode volum ...
... is based on a significantly different resonator concept and will be called “InnoSlab”. The “InnoSlab” is the youngest concept of diode pumped solid state lasers of the second generation.6) Side pumped slab: The laser emission is gain guided and parasitic modes–living outside the fundamental mode volum ...
C f= s moO moo (8)
... ratio, and as a result the dynamic range of the measurement will be lower. To permit detection of all the moments with comparable dynamic ranges, the lower orders can be attenuated to avoid saturation of the detector while the higher orders remain unattenuated. In addition, relatively longer detecto ...
... ratio, and as a result the dynamic range of the measurement will be lower. To permit detection of all the moments with comparable dynamic ranges, the lower orders can be attenuated to avoid saturation of the detector while the higher orders remain unattenuated. In addition, relatively longer detecto ...
Activity 3
... Pepsin obtains optimal activity in a highly acidic medium (pH 1.8-3.5). When pH exceeds 5.0, very little or no proteolytic activity will take place. This pH correlates with the pH in the stomach which has an acidic pH of 2.0-3.0 when HCl mixes with stomach contents ...
... Pepsin obtains optimal activity in a highly acidic medium (pH 1.8-3.5). When pH exceeds 5.0, very little or no proteolytic activity will take place. This pH correlates with the pH in the stomach which has an acidic pH of 2.0-3.0 when HCl mixes with stomach contents ...
Observation of light below Cerenkov threshold in a 1.5 meter long
... emitted in radiators of finite length [3-53 shows that the radiation is not produced at a unique angle but is in fact produced with a diffraction-like angular intensity distribution. This distribution has a peak at the nominal Cerenkov angle, and a spacing between lobes given by A O=2/LsinO c where ...
... emitted in radiators of finite length [3-53 shows that the radiation is not produced at a unique angle but is in fact produced with a diffraction-like angular intensity distribution. This distribution has a peak at the nominal Cerenkov angle, and a spacing between lobes given by A O=2/LsinO c where ...
Optical Fabrication - University of Arizona
... should not stress the optic, otherwise when the part is finished and unmounted (or “deblocked”), it will distort by “springing” into its stress-free condition. However, the part must be held rigidly enough resist the forces of the various surfacing methods. Often, the support is changed as the part ...
... should not stress the optic, otherwise when the part is finished and unmounted (or “deblocked”), it will distort by “springing” into its stress-free condition. However, the part must be held rigidly enough resist the forces of the various surfacing methods. Often, the support is changed as the part ...
Michelson Interferometer
... 4. Turn the laser on and adjust the laser beam height using lab jack lifting knob until the beam is approximately parallel with the top of the interferometer and strikes the mirror at the centre. 5. Set the viewing screen opposite of the adjustable mirror M2. Note that the viewing screen should be p ...
... 4. Turn the laser on and adjust the laser beam height using lab jack lifting knob until the beam is approximately parallel with the top of the interferometer and strikes the mirror at the centre. 5. Set the viewing screen opposite of the adjustable mirror M2. Note that the viewing screen should be p ...
Chapter 33 . Aberration Curves in Lens Design
... These curves can take several different forms, depending on the particular application of the optical system. The most common form is the transverse ray aberration curve. It is also called lateral aberration, or ray intercept curve (also referred to by the misleading term ‘‘rim ray plots’’). These p ...
... These curves can take several different forms, depending on the particular application of the optical system. The most common form is the transverse ray aberration curve. It is also called lateral aberration, or ray intercept curve (also referred to by the misleading term ‘‘rim ray plots’’). These p ...
Optical tweezers
Optical tweezers (originally called ""single-beam gradient force trap"") are scientific instruments that use a highly focused laser beam to provide an attractive or repulsive force (typically on the order of piconewtons), depending on the refractive index mismatch to physically hold and move microscopic dielectric objects similar to tweezers. Optical tweezers have been particularly successful in studying a variety of biological systems in recent years.