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geometrical optics
... An optical lens is a piece of glass or other transparent material used to direct or control rays of light. The refraction of light at the surface of a lens depends on its shape, its index of refraction, and the nature of the medium surrounding it (usually air), in accordance with Snell’s Law. Lenses ...
... An optical lens is a piece of glass or other transparent material used to direct or control rays of light. The refraction of light at the surface of a lens depends on its shape, its index of refraction, and the nature of the medium surrounding it (usually air), in accordance with Snell’s Law. Lenses ...
Mode selective fiber Bragg gratings
... However, many high power fiber laser systems rely on large mode area (LMA) fibers. FBG inscription by conventional means is challenging here, because for large, actively doped fiber cores, the necessary prior photo sensitivity treatment comes to its limits. Additionally, fibers with larger core diameter ...
... However, many high power fiber laser systems rely on large mode area (LMA) fibers. FBG inscription by conventional means is challenging here, because for large, actively doped fiber cores, the necessary prior photo sensitivity treatment comes to its limits. Additionally, fibers with larger core diameter ...
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Part I : Theory of two
... – 4.6mol% MgO compared with a lower Mg concentration, the effect for reducing the optical damage is much strongly. – A distinct threshold at a critical Mg concentration: [Mg]c>4.5mol%. – The effect due to the Mg concentration bigger than critical value (not deliberately doped with Fe) • The optical ...
... – 4.6mol% MgO compared with a lower Mg concentration, the effect for reducing the optical damage is much strongly. – A distinct threshold at a critical Mg concentration: [Mg]c>4.5mol%. – The effect due to the Mg concentration bigger than critical value (not deliberately doped with Fe) • The optical ...
Investigation of nanoscale structural alterations of cell nucleus as an
... be measured either using direct imaging with nanoscale resolution, or indirect analysis of optical signals from light-cell interaction. The direct nanoscopic imaging can be achieved by super-resolution fluorescence microscopy techniques, such as stochastic optical reconstruction microscopy (STORM) [ ...
... be measured either using direct imaging with nanoscale resolution, or indirect analysis of optical signals from light-cell interaction. The direct nanoscopic imaging can be achieved by super-resolution fluorescence microscopy techniques, such as stochastic optical reconstruction microscopy (STORM) [ ...
Specifying an Aspheric Surface
... subsequent page illustrates the departure from the aspheric surface sag to that of an ordinary sphere. Also seen is the large degree of spherical aberration evident from the focus of the spherical vs. aspherical lens element. Since the spherical surface has the property that the rate of change of th ...
... subsequent page illustrates the departure from the aspheric surface sag to that of an ordinary sphere. Also seen is the large degree of spherical aberration evident from the focus of the spherical vs. aspherical lens element. Since the spherical surface has the property that the rate of change of th ...
Chapter 5 Experimental Apparatus II
... to suppression of the absorption of rescattered light in the MOT. The second-hand absorption of photons that have already been spontaneously scattered by MOT atoms, or “radiation trapping,” leads to temperature and density limitations in free-space MOTs [Sesko91; Ellinger94]. These rescattering even ...
... to suppression of the absorption of rescattered light in the MOT. The second-hand absorption of photons that have already been spontaneously scattered by MOT atoms, or “radiation trapping,” leads to temperature and density limitations in free-space MOTs [Sesko91; Ellinger94]. These rescattering even ...
Cloaking at Optical Frequencies - Cornell ECE
... distributed Bragg reflector (DBR). The distribution of posts induces a variation of the effective index of refraction across the surface through the relation εeff = ρSiO2εSiO2 + ρSiεSi, where ρ is the volumetric fraction and ε is the effective dielectric constant of each material26. The DBR consists ...
... distributed Bragg reflector (DBR). The distribution of posts induces a variation of the effective index of refraction across the surface through the relation εeff = ρSiO2εSiO2 + ρSiεSi, where ρ is the volumetric fraction and ε is the effective dielectric constant of each material26. The DBR consists ...
Combining Photonic Crystal and Optical Monte
... coplanar and light scattering through electrical connections or mechanical fixations. The statistical error of the MC simulations was estimated through the standard deviation of the results from 10 repeated computations. It was found to be less than 0.1%, since 105 photons were simulated per inciden ...
... coplanar and light scattering through electrical connections or mechanical fixations. The statistical error of the MC simulations was estimated through the standard deviation of the results from 10 repeated computations. It was found to be less than 0.1%, since 105 photons were simulated per inciden ...
Construction and operation - the UQ Bose
... evaporation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109 6.11 Elastic two-body collision rate and three-body loss rate during the evaporation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109 6.12 Trap depth and mean frequency during the evaporation using lin ...
... evaporation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109 6.11 Elastic two-body collision rate and three-body loss rate during the evaporation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109 6.12 Trap depth and mean frequency during the evaporation using lin ...
Phys. Rev. Lett. 87, 160405
... variable f [11]. In our setup this time phase is measured interferometrically and controlled with a piezomounted mirror and a servoloop. Furthermore, the intensity of the lattice beams is stabilized in order to ensure a constant potential depth during our measurements. The intensity pattern in the y ...
... variable f [11]. In our setup this time phase is measured interferometrically and controlled with a piezomounted mirror and a servoloop. Furthermore, the intensity of the lattice beams is stabilized in order to ensure a constant potential depth during our measurements. The intensity pattern in the y ...
PowerPoint Presentation - Tip-tilt mirror and sensor configuration
... More about off-axis parabolas • Circular cut-out of a parabola, off optical axis • Frequently used in matched pairs (each cancels out the off-axis aberrations of the other) to first collimate light and then refocus it ...
... More about off-axis parabolas • Circular cut-out of a parabola, off optical axis • Frequently used in matched pairs (each cancels out the off-axis aberrations of the other) to first collimate light and then refocus it ...
2 Pulsed Optics
... the intensity of light, one speaks of linear optics. This situation occurs with regular light sources such as light bulbs, low-intensity light-emitting diodes and the sun. With such low-intensity sources the reaction of matter to light can be characterized by a set of parameters such as the index of ...
... the intensity of light, one speaks of linear optics. This situation occurs with regular light sources such as light bulbs, low-intensity light-emitting diodes and the sun. With such low-intensity sources the reaction of matter to light can be characterized by a set of parameters such as the index of ...
D12 in docx
... [D12:5] J. Fischer and M. Wegener, Three-dimensional direct laser writing inspired by stimulated-emission-depletion microscopy, Opt. Mater. Express 1, 614 (2011) [D12:6] T.J.A. Wolf, J. Fischer, M. Wegener, and A.-N. Unterreiner, Pump-probe spectroscopy on photoinitiators for stimulated-emission-dep ...
... [D12:5] J. Fischer and M. Wegener, Three-dimensional direct laser writing inspired by stimulated-emission-depletion microscopy, Opt. Mater. Express 1, 614 (2011) [D12:6] T.J.A. Wolf, J. Fischer, M. Wegener, and A.-N. Unterreiner, Pump-probe spectroscopy on photoinitiators for stimulated-emission-dep ...
SRON presentation
... But: “Pure” (geometrical) optical systems would require components much larger than λ. In sub- /mm range diffraction is important, and quasi-optics handles this in a theorectical way. ...
... But: “Pure” (geometrical) optical systems would require components much larger than λ. In sub- /mm range diffraction is important, and quasi-optics handles this in a theorectical way. ...
Methods and Applications of Optical Holography
... Interference Lithography (LIL) was employed for image formation – the interference pattern of two laser beams intersecting in small area (so called dot or pixel) was used for three-color dot-matrix image recording process [28]. In this technique every dot contains diffraction grating and is recorded ...
... Interference Lithography (LIL) was employed for image formation – the interference pattern of two laser beams intersecting in small area (so called dot or pixel) was used for three-color dot-matrix image recording process [28]. In this technique every dot contains diffraction grating and is recorded ...
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.