acta physica slovaca vol. 50 No. 4, 489 – 500 August 2000 MATRIX
... If the boundaries of the thin film systems can be represented by the model of microrough surface (MCRS) one can employ some of the formulae of the theory of effective medium for expressing the optical quantities of these systems. For the model of MCRS the following relations are fulfilled: σ λ and ...
... If the boundaries of the thin film systems can be represented by the model of microrough surface (MCRS) one can employ some of the formulae of the theory of effective medium for expressing the optical quantities of these systems. For the model of MCRS the following relations are fulfilled: σ λ and ...
Practical Aspects of Mirror Usage in Optical Systems for
... glass polishing, defects in the glass, and from the glass atoms themselves, even with no defects, surface structure or roughness present. For the dielectric mirrors discussed here, the amount of light lost through scatter is in practice typically about 0.1%, and not more than a few tenths of one per ...
... glass polishing, defects in the glass, and from the glass atoms themselves, even with no defects, surface structure or roughness present. For the dielectric mirrors discussed here, the amount of light lost through scatter is in practice typically about 0.1%, and not more than a few tenths of one per ...
Optical frequency combs: From frequency metrology to - JILA-PFC
... resulted in a dramatically improved value for the speed of light [41]. The measurements were confirmed by a group at the National Physical Laboratory (NPL), Teddington, U.K. [42]. The 3.39- m He–Ne laser is a convenient source with enormous gain which can be used with CH (a symmetric molecule) to pr ...
... resulted in a dramatically improved value for the speed of light [41]. The measurements were confirmed by a group at the National Physical Laboratory (NPL), Teddington, U.K. [42]. The 3.39- m He–Ne laser is a convenient source with enormous gain which can be used with CH (a symmetric molecule) to pr ...
Practical Aspects of Mirror Usage in Optical Systems for
... glass polishing, defects in the glass, and from the glass atoms themselves, even with no defects, surface structure or roughness present. For the dielectric mirrors discussed here, the amount of light lost through scatter is in practice typically about 0.1%, and not more than a few tenths of one per ...
... glass polishing, defects in the glass, and from the glass atoms themselves, even with no defects, surface structure or roughness present. For the dielectric mirrors discussed here, the amount of light lost through scatter is in practice typically about 0.1%, and not more than a few tenths of one per ...
Elastic stretchable optical fibers
... The utilization of soft materials in the design of optical systems provides opportunities for imparting these optical systems with completely unprecedented properties. This will enhance performance of systems, such as optical fibers, and enable new application scenarios. Here, we report the design, ...
... The utilization of soft materials in the design of optical systems provides opportunities for imparting these optical systems with completely unprecedented properties. This will enhance performance of systems, such as optical fibers, and enable new application scenarios. Here, we report the design, ...
Macroscopic effects in noncollinear high-order
... for HHG but strongly reduces the efficiency due to the negative phase mismatch induced by plasma dispersion. Additionally, the Gouy phase can lead to a significant negative phase mismatch especially in the case of a tight focus or high harmonic orders. In both cases, the resulting negative Δkjj can ...
... for HHG but strongly reduces the efficiency due to the negative phase mismatch induced by plasma dispersion. Additionally, the Gouy phase can lead to a significant negative phase mismatch especially in the case of a tight focus or high harmonic orders. In both cases, the resulting negative Δkjj can ...
The mechanism for continuum polarization in laser induced
... asymmetric profiles in both P and α0. There is a hint of such asymmetry in the fs data as well, although the poorer signal/noise ratio makes this effect more difficult to discern. In all the experiments described so far, the laser was incident at an oblique angle 30° from the normal, and the emission ...
... asymmetric profiles in both P and α0. There is a hint of such asymmetry in the fs data as well, although the poorer signal/noise ratio makes this effect more difficult to discern. In all the experiments described so far, the laser was incident at an oblique angle 30° from the normal, and the emission ...
IEEE J. Quantum Electron. 33, 970 (1997)
... reported [12]–[16]. It has also been recognized that for GaAs or wider bandgap materials, point defects are the limiting factor determining the gradual degradation of the LD’s [11], [17]–[21]. Recombination-enhanced defect motion [22]–[25], such as dislocation climb and dislocation glide causing rap ...
... reported [12]–[16]. It has also been recognized that for GaAs or wider bandgap materials, point defects are the limiting factor determining the gradual degradation of the LD’s [11], [17]–[21]. Recombination-enhanced defect motion [22]–[25], such as dislocation climb and dislocation glide causing rap ...
Coatings - CVI Laser Optics
... transmission inefficiencies can be tolerated. In principle, the surface of any optical element can be coated with thin layers of various materials (called thin films) in order to achieve the desired reflection/ transmission ratio. With the exception of simple metallic coatings, this ratio depends on ...
... transmission inefficiencies can be tolerated. In principle, the surface of any optical element can be coated with thin layers of various materials (called thin films) in order to achieve the desired reflection/ transmission ratio. With the exception of simple metallic coatings, this ratio depends on ...
Strain-Temperature Discrimination Using Multimode Interference in
... small diameter reduction (large taper waists), a clear MMI image in the spectral response [see Fig. 3(a)]. As the taper waist is reduced, a smaller number of propagating modes is expected. Going to smaller taper waists (25 μm and 15 μm), the number of modes that propagate through the taper region is ...
... small diameter reduction (large taper waists), a clear MMI image in the spectral response [see Fig. 3(a)]. As the taper waist is reduced, a smaller number of propagating modes is expected. Going to smaller taper waists (25 μm and 15 μm), the number of modes that propagate through the taper region is ...
Applied Fiber Optic Measurement for Geohydraulic Engineering
... sensing system detects either anti-Stroke Raman scatter or Brillouin scatter. The authors have shown, that the spatial resolution of an OTDR can be much higher than commonly assumed, particularly if strong reflections from reflective points are monitored. A better ranging system has been described, ...
... sensing system detects either anti-Stroke Raman scatter or Brillouin scatter. The authors have shown, that the spatial resolution of an OTDR can be much higher than commonly assumed, particularly if strong reflections from reflective points are monitored. A better ranging system has been described, ...
X04704145151
... of second harmonic generation. The centrosymmetric thiourea molecule, when combine with inorganic salt yield noncentrosymmetric complexes, which has the nonlinear optical properties [7]. Hence, in several years, search is focused on new types NLO materials which combined the advantages of organic an ...
... of second harmonic generation. The centrosymmetric thiourea molecule, when combine with inorganic salt yield noncentrosymmetric complexes, which has the nonlinear optical properties [7]. Hence, in several years, search is focused on new types NLO materials which combined the advantages of organic an ...
An ultrafast reconfigurable nanophotonic switch using
... the binary optimization scheme varied between 8 and 16 for these optimizations (Figure 3b). The mean value of the modulation of the peak achieved at different sample positions was (50±2)% (Figure 3c), while the modulation of the background was found to be (36±2)% (Figure 3d). In addition to variatio ...
... the binary optimization scheme varied between 8 and 16 for these optimizations (Figure 3b). The mean value of the modulation of the peak achieved at different sample positions was (50±2)% (Figure 3c), while the modulation of the background was found to be (36±2)% (Figure 3d). In addition to variatio ...
Few Mode Transmission Fiber With Low DGD, Low Mode Coupling
... splicing the spools together is shown in Fig. 7. The measurement is performed for two launch conditions: 1) the light is launched into the span from an SMF via a normal splice, and 2) via a splice where the SMF is offset relative to the two-mode fiber to get more light into the mode. The measurement ...
... splicing the spools together is shown in Fig. 7. The measurement is performed for two launch conditions: 1) the light is launched into the span from an SMF via a normal splice, and 2) via a splice where the SMF is offset relative to the two-mode fiber to get more light into the mode. The measurement ...
Engineering nonlinearities in nanoscale optical systems
... absorption (TPA) [78,79], and supercontinuum generation [80] have been demonstrated experimentally or studied theoretically. These effects can lead to important functionalities such as pulse shaping or optical switching. From the point of view of optical transport, these effects can introduce impair ...
... absorption (TPA) [78,79], and supercontinuum generation [80] have been demonstrated experimentally or studied theoretically. These effects can lead to important functionalities such as pulse shaping or optical switching. From the point of view of optical transport, these effects can introduce impair ...
Optical Characteristics of ZnTeO Thin Films Synthesized by Pulsed
... ZnTeO thin-film deposition under a relatively high oxygen partial pressure. Samples were deposited on both c-plane sapphire and GaAs (001) substrates using a ZnTe target, KrF excimer laser (k = 248 nm, 20 ns pulse width, 6 Hz repetition rate), a deposition temperature of 300°C, and varying ambients ...
... ZnTeO thin-film deposition under a relatively high oxygen partial pressure. Samples were deposited on both c-plane sapphire and GaAs (001) substrates using a ZnTe target, KrF excimer laser (k = 248 nm, 20 ns pulse width, 6 Hz repetition rate), a deposition temperature of 300°C, and varying ambients ...
1 Basic Mean-Field Theory for Bose–Einstein Condensates
... where, in general, the trap frequencies ωx , ωy , ωz along the three directions are different. As a result, the geometry of the trap and, hence, the shape of the condensate itself, may range from isotropic forms, to strongly anisotropic ones. In particular, if ωx = ωy ≡ ωr ≈ ωz the trap is isotropic ...
... where, in general, the trap frequencies ωx , ωy , ωz along the three directions are different. As a result, the geometry of the trap and, hence, the shape of the condensate itself, may range from isotropic forms, to strongly anisotropic ones. In particular, if ωx = ωy ≡ ωr ≈ ωz the trap is isotropic ...
incoherent
... waves with equal paths but from different points on the wavefront do not interfere ...
... waves with equal paths but from different points on the wavefront do not interfere ...
Far-field optical microscope with nanometer-scale
... introduced by Abbe in the 19th century have slightly improved resolution on the order ...
... introduced by Abbe in the 19th century have slightly improved resolution on the order ...
Construction of a Calcium Matter-Wave Interferometer
... the apparatus. The appendix describes time-saving and cost-effective surface mount soldering techniques we developed over the course of this project. While time constraints prevented us from taking data with the interferometer, we were able to obtain the necessary optics, construct the laser and ele ...
... the apparatus. The appendix describes time-saving and cost-effective surface mount soldering techniques we developed over the course of this project. While time constraints prevented us from taking data with the interferometer, we were able to obtain the necessary optics, construct the laser and ele ...
Fiberoptic Communication Systems
... individual wavelengths that constitute the spectrum of the source, the output pulse will certainly be broadened. The pulse broadening in single mode fibers will be much smaller than the corresponding value in multimode fibers. There are two components to the dispersion in single mode fibers. One is ...
... individual wavelengths that constitute the spectrum of the source, the output pulse will certainly be broadened. The pulse broadening in single mode fibers will be much smaller than the corresponding value in multimode fibers. There are two components to the dispersion in single mode fibers. One is ...
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.