Optical design of reflectionless complex media by
... (a–b) or convergent (c–f). As can be seen from Figs. 3(a) and 3(b), the beam shifter translates the incoming plane wave in the y direction perpendicular to the propagation x direction without altering the angle of the wave fronts. In contrast, the direction of the power flow changes by an angle ...
... (a–b) or convergent (c–f). As can be seen from Figs. 3(a) and 3(b), the beam shifter translates the incoming plane wave in the y direction perpendicular to the propagation x direction without altering the angle of the wave fronts. In contrast, the direction of the power flow changes by an angle ...
srep04093-s1
... As the final step, we need to demonstrate that the initial Gaussian beam amplitude and phase can be recovered from the vortex beam after it propagated around the object. In order to recover the initial Gaussian from a vortex beam, we inserted the second compensating spiral phase plate with exactly t ...
... As the final step, we need to demonstrate that the initial Gaussian beam amplitude and phase can be recovered from the vortex beam after it propagated around the object. In order to recover the initial Gaussian from a vortex beam, we inserted the second compensating spiral phase plate with exactly t ...
... high effective optical thickness of material. In other words, a very small width in the angular scan. In photopolymers is well known the Beer’s law, that implies an exponential decay of the light inside the material. This is the origin of not uniform index modulation in the photopolymer. This effect ...
Journal of Modern Optics Slow and fast light: fundamentals and
... negative. Extreme values of the group velocity (that is, vg appreciably different from c) invariably rely on the dominance of the second contribution to the group index of Equation (1). This contribution of course results from the frequency dependence of the refractive index, and for this reason ext ...
... negative. Extreme values of the group velocity (that is, vg appreciably different from c) invariably rely on the dominance of the second contribution to the group index of Equation (1). This contribution of course results from the frequency dependence of the refractive index, and for this reason ext ...
File
... core radius a and the index difference ∆, it is possible to design the fiber such that λZD is shifted into the vicinity of 1.55 µm. Such fibers are called dispersion shifted fibers. It is also possible to tailor the waveguide contribution such that the total dispersion D is relatively small over a w ...
... core radius a and the index difference ∆, it is possible to design the fiber such that λZD is shifted into the vicinity of 1.55 µm. Such fibers are called dispersion shifted fibers. It is also possible to tailor the waveguide contribution such that the total dispersion D is relatively small over a w ...
spie07chiral
... Experiments conducted by V. Sanders and R. M. Kiehn in 1977, using dual polarized ring lasers verified that the speed of light can have a 4 different phase velocities depending upon direction and polarization. The 4-fold Lorentz degeneracy can be broken. ...
... Experiments conducted by V. Sanders and R. M. Kiehn in 1977, using dual polarized ring lasers verified that the speed of light can have a 4 different phase velocities depending upon direction and polarization. The 4-fold Lorentz degeneracy can be broken. ...
... to transmit data in the form of light over long distances [1]. They have a number of well-known advantages with respect to the traditional forms of data link including [2], no electrical noise, they are self powered [3], ease of integration [4], non-inductivity to electromagnetic noise, low loss of ...
Polarizers
... We discussed monochromatic/polarization thus far. If light is not absolutely monochromatic, the amplitude and relative phase between x and y components can vary with time, and the electric field vector will first vibrate in one ellipse and then in another. The polarization state of a polychromat ...
... We discussed monochromatic/polarization thus far. If light is not absolutely monochromatic, the amplitude and relative phase between x and y components can vary with time, and the electric field vector will first vibrate in one ellipse and then in another. The polarization state of a polychromat ...
Document
... We discussed monochromatic/polarization thus far. If light is not absolutely monochromatic, the amplitude and relative phase between x and y components can vary with time, and the electric field vector will first vibrate in one ellipse and then in another. The polarization state of a polychromat ...
... We discussed monochromatic/polarization thus far. If light is not absolutely monochromatic, the amplitude and relative phase between x and y components can vary with time, and the electric field vector will first vibrate in one ellipse and then in another. The polarization state of a polychromat ...
Negative refraction without negative index in metallic photonic crystals
... can be found in [7]. Recently, it has also become clear that dielectric structures with periodic variations on the scale of wavelength, i.e. photonic crystals [8–10], may enable similar anomalous light behavior [11–16]. The physical principles behind these unusual phenomena in photonic crystals are ...
... can be found in [7]. Recently, it has also become clear that dielectric structures with periodic variations on the scale of wavelength, i.e. photonic crystals [8–10], may enable similar anomalous light behavior [11–16]. The physical principles behind these unusual phenomena in photonic crystals are ...
WDM Concepts and Components
... • Only one (DFB or DBR) laser that has grating filter in the lasing cavity • Wavelength is tuned by either changing the temperature of the grating (0.1 nm/OC) • Or by altering the injection current into the passive section (0.006 nm/mA) • The tuning range decreases with the optical output power ...
... • Only one (DFB or DBR) laser that has grating filter in the lasing cavity • Wavelength is tuned by either changing the temperature of the grating (0.1 nm/OC) • Or by altering the injection current into the passive section (0.006 nm/mA) • The tuning range decreases with the optical output power ...
Summary The properties of chiral molecules can be different in living
... enantiomers using a chiral additive, these crystals could not recover from the grinding, thereby remaining small. This would allow a resolution of the enantiomers without the necessity of the racemization reaction in the solution. In Chapter 7 this idea was tested using a derivate of the amino acid ...
... enantiomers using a chiral additive, these crystals could not recover from the grinding, thereby remaining small. This would allow a resolution of the enantiomers without the necessity of the racemization reaction in the solution. In Chapter 7 this idea was tested using a derivate of the amino acid ...
EOSTAR: an electro-optical sensor performance
... bulk models in the module has been verified12 with data available from literature, in particular Smith’s model2. The user must select one particular model and only the data from that model are used for further calculations. The calculated profiles of the meteorological parameters are displayed graph ...
... bulk models in the module has been verified12 with data available from literature, in particular Smith’s model2. The user must select one particular model and only the data from that model are used for further calculations. The calculated profiles of the meteorological parameters are displayed graph ...
Advances in Environmental Biology
... Analyzing the interaction of electromagnetic waves with nano cylindrical and spherical particles by using different numerical techniques has been the subject of intense investigation and research, recently. Employing an optimum method by regarding the condition governing these sorts of problems is a ...
... Analyzing the interaction of electromagnetic waves with nano cylindrical and spherical particles by using different numerical techniques has been the subject of intense investigation and research, recently. Employing an optimum method by regarding the condition governing these sorts of problems is a ...
Experimental realization of three-dimensional indefinite cavities at the nanoscale with
... The metamaterial structure consists of alternating thin layers of silver and germanium (Fig. 1a). When the multilayer period is much less than the wavelength, the multilayer can be considered as an effective medium described by Maxwell–Garnet theory (Supplementary Section S2). The permittivity tenso ...
... The metamaterial structure consists of alternating thin layers of silver and germanium (Fig. 1a). When the multilayer period is much less than the wavelength, the multilayer can be considered as an effective medium described by Maxwell–Garnet theory (Supplementary Section S2). The permittivity tenso ...
Slide 1
... HeNe lasers have a well-known wavelength that is relatively insensitive to temperature Wavelength meters have limited dynamic range compared to grating-based OSAs ...
... HeNe lasers have a well-known wavelength that is relatively insensitive to temperature Wavelength meters have limited dynamic range compared to grating-based OSAs ...
Birefringence
Birefringence is the optical property of a material having a refractive index that depends on the polarization and propagation direction of light. These optically anisotropic materials are said to be birefringent (or birefractive). The birefringence is often quantified as the maximum difference between refractive indices exhibited by the material. Crystals with asymmetric crystal structures are often birefringent, as are plastics under mechanical stress.Birefringence is responsible for the phenomenon of double refraction whereby a ray of light, when incident upon a birefringent material, is split by polarization into two rays taking slightly different paths. This effect was first described by the Danish scientist Rasmus Bartholin in 1669, who observed it in calcite, a crystal having one of the strongest birefringences. However it was not until the 19th century that Augustin-Jean Fresnel described the phenomenon in terms of polarization, understanding light as a wave with field components in transverse polarizations (perpendicular to the direction of the wave vector).