Effect of pores on transmission properties of transparent ceramics
... can be hardly eliminated even the pore size is very small. It has been shown that ceramics are opaque when the porosity is more than 1% [12-13]. Thus, scattering by residual pores is considered as the main cause of preventing the transparency of ceramics. The pores are nanosized in the nano-ceramics ...
... can be hardly eliminated even the pore size is very small. It has been shown that ceramics are opaque when the porosity is more than 1% [12-13]. Thus, scattering by residual pores is considered as the main cause of preventing the transparency of ceramics. The pores are nanosized in the nano-ceramics ...
Cloaking at Optical Frequencies - Cornell ECE
... diameter silicon posts embedded in an SiO2 medium, and the reflective surface consists of a 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 volumet ...
... diameter silicon posts embedded in an SiO2 medium, and the reflective surface consists of a 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 volumet ...
Large acceptance of non-collinear phase
... of the centric non-collinear SHG with the variation of the angle is shown in Figs. 1(c)−−1(e). In Fig. 1(e) there are two conical SHG beams which distribute in an axial symmetry type 1 and 2, and three symmetrical distributed SHG spots 3,4,6 and one Cherenkov radiation spot 5 which is emitted from t ...
... of the centric non-collinear SHG with the variation of the angle is shown in Figs. 1(c)−−1(e). In Fig. 1(e) there are two conical SHG beams which distribute in an axial symmetry type 1 and 2, and three symmetrical distributed SHG spots 3,4,6 and one Cherenkov radiation spot 5 which is emitted from t ...
A Laser Coupler for DVD/CD Playback
... variations in disc birefringence and it can implement a DVD/CD-drive with high playability. Using a QWP has another advantage, because it can minimize optical feedback noise. The VILD chip we have developed is designed to be used without high-frequency superposition circuits, therefore, the optical ...
... variations in disc birefringence and it can implement a DVD/CD-drive with high playability. Using a QWP has another advantage, because it can minimize optical feedback noise. The VILD chip we have developed is designed to be used without high-frequency superposition circuits, therefore, the optical ...
Which Way? Both Ways: Particle
... you’ll see that the disturbance gets bigger and smaller in a very regular way—sometimes the duck is higher up, sometimes lower down—and makes a pattern in time very much like the pattern in space. You can measure how often the wave repeats itself in a given amount of time—how many times the duck rea ...
... you’ll see that the disturbance gets bigger and smaller in a very regular way—sometimes the duck is higher up, sometimes lower down—and makes a pattern in time very much like the pattern in space. You can measure how often the wave repeats itself in a given amount of time—how many times the duck rea ...
Multimode Interferometer for Guided Matter Waves
... The two density patterns will, at the exit of the interferometer, add up to the same wave packet shape one would expect if the interferometer was not there [11]. Looking at the total wave packet, not distinguishing between the different transverse levels, one sees only its envelope. The two transver ...
... The two density patterns will, at the exit of the interferometer, add up to the same wave packet shape one would expect if the interferometer was not there [11]. Looking at the total wave packet, not distinguishing between the different transverse levels, one sees only its envelope. The two transver ...
infos on Underwater optics theory
... need not go to incomprehensible limits for this. The formulae are shown more to allow the operator to calculate the likely results rather than as a demonstration incomprehensible limits for this. The formulae are shown more to allow the operator to calculate the likely results rather than as a demon ...
... need not go to incomprehensible limits for this. The formulae are shown more to allow the operator to calculate the likely results rather than as a demonstration incomprehensible limits for this. The formulae are shown more to allow the operator to calculate the likely results rather than as a demon ...
Spatial Light Modulators for the Manipulation of Individual Atoms
... is necessary. This can be done with either a sophisticated microscope objective [22] or a single aspheric lens [23]. Typically, these are diffraction limited and have a numerical aperture of 0.5, leading to an optical resolution approximately equal to one wavelength, λ. This also determines the late ...
... is necessary. This can be done with either a sophisticated microscope objective [22] or a single aspheric lens [23]. Typically, these are diffraction limited and have a numerical aperture of 0.5, leading to an optical resolution approximately equal to one wavelength, λ. This also determines the late ...
The Case of Twisted Photons
... nanoparticles, molecules, (Rydberg) atoms, and nuclei . Atomic photoexcitation considered here . Results in excitation of states with a range of quantum numbers, different from plane waves . Predicted parity-conserving helicity asymmetry in the central region of an optical vortex: flipping the helic ...
... nanoparticles, molecules, (Rydberg) atoms, and nuclei . Atomic photoexcitation considered here . Results in excitation of states with a range of quantum numbers, different from plane waves . Predicted parity-conserving helicity asymmetry in the central region of an optical vortex: flipping the helic ...
Nonlinear optical properties of nanocomposite materials
... experienced by an intense light beam. The details of our measurement procedure are described in [7]. Basically, our procedure involves measuring, as a function of the angle of incidence, the nonlinear phase experienced by the incident light beam. The phase shift was measured using the induced focusi ...
... experienced by an intense light beam. The details of our measurement procedure are described in [7]. Basically, our procedure involves measuring, as a function of the angle of incidence, the nonlinear phase experienced by the incident light beam. The phase shift was measured using the induced focusi ...