The spatial shape of entangled photon states generated in
... matching is the direction p y = 0, as it is shown in figure 2(d). This is the case when the direction of propagation of the pump beam (z) forms an angle ν0 = 90◦ with the optic axis of the crystal. It is also the case for most QPM configurations used for SPDC [19, 20]. In figure 3(a) we plot a case ...
... matching is the direction p y = 0, as it is shown in figure 2(d). This is the case when the direction of propagation of the pump beam (z) forms an angle ν0 = 90◦ with the optic axis of the crystal. It is also the case for most QPM configurations used for SPDC [19, 20]. In figure 3(a) we plot a case ...
Size Influence on the Propagation Loss Induced by Sidewall
... to the refractive index of the silicon oxide cladding. This is accompanied by a significant deconfinement of the optical mode which is favorable to the loss reduction. As an example, for nm and nm, the predicted mode diameter and the calculated propagation loss does not exis 4 m at ceed 0.50 dB/cm. ...
... to the refractive index of the silicon oxide cladding. This is accompanied by a significant deconfinement of the optical mode which is favorable to the loss reduction. As an example, for nm and nm, the predicted mode diameter and the calculated propagation loss does not exis 4 m at ceed 0.50 dB/cm. ...
Transformational Plasmon Optics Yongmin Liu, Thomas Zentgraf, Guy Bartal,
... space in some manner that can be tracked by a certain coordinate transformation. Second, we derive from the particular transformation the permittivity and permeability distributions, so that the original, undistorted space with such material property distributions can mimick the optical properties o ...
... space in some manner that can be tracked by a certain coordinate transformation. Second, we derive from the particular transformation the permittivity and permeability distributions, so that the original, undistorted space with such material property distributions can mimick the optical properties o ...
Real-time phase measurement of optical vortices based on
... T. Kuga, Y. Torii, N. Shiokawa, T. Hirano, Y. Shimizu, and H. Sasada, “Novel optical trap of atoms with a doughnut beam,” Phys. Rev. Lett. 78(25), 4713–4716 (1997). H. He, M. E. J. Friese, N. R. Heckenberg, and H. Rubinsztein-Dunlop, “Direct observation of transfer of angular momentum to absorptive ...
... T. Kuga, Y. Torii, N. Shiokawa, T. Hirano, Y. Shimizu, and H. Sasada, “Novel optical trap of atoms with a doughnut beam,” Phys. Rev. Lett. 78(25), 4713–4716 (1997). H. He, M. E. J. Friese, N. R. Heckenberg, and H. Rubinsztein-Dunlop, “Direct observation of transfer of angular momentum to absorptive ...
... found about half a dB originating from coupling twice between the Si-MOS sections, and about -0.1 dB/μm propagation loss of the MOS-mode with the latter corresponding to a propagation length of 43 μm (Figure 2B). Thus, a 5 μm long device suffers a total insertion loss of only about 1 dB. Towards ver ...
Transformational Plasmon Optics Yongmin Liu, Thomas Zentgraf, Guy Bartal,
... space in some manner that can be tracked by a certain coordinate transformation. Second, we derive from the particular transformation the permittivity and permeability distributions, so that the original, undistorted space with such material property distributions can mimick the optical properties o ...
... space in some manner that can be tracked by a certain coordinate transformation. Second, we derive from the particular transformation the permittivity and permeability distributions, so that the original, undistorted space with such material property distributions can mimick the optical properties o ...
slac memorandum - Stanford Synchrotron Radiation Lightsource
... shielding. Five of these originate on the SLM beamline and end at the ratchet wall; one originates on the SLM line and passes through the Beamline 1 penetration; one originates on the SLM line and enters the SLM light-pipe; and one originates on either Beamline 1 or the SPEAR beam path and enters th ...
... shielding. Five of these originate on the SLM beamline and end at the ratchet wall; one originates on the SLM line and passes through the Beamline 1 penetration; one originates on the SLM line and enters the SLM light-pipe; and one originates on either Beamline 1 or the SPEAR beam path and enters th ...
Split-field finite-difference time-domain method for second-harmonic generation in two-dimensionally periodic structures
... Recently, the applications of nonlinear optics in communications, optical computing, and photonic crystal structures have been extensively investigated in the literature [1–7]. Nonlinear-optical materials reach different phenomena such as all-optical control of electromagnetic waves or all-optical s ...
... Recently, the applications of nonlinear optics in communications, optical computing, and photonic crystal structures have been extensively investigated in the literature [1–7]. Nonlinear-optical materials reach different phenomena such as all-optical control of electromagnetic waves or all-optical s ...
Optical forces through guided light deflections
... the optimization of light-matter interaction. Such force-optimized structures can, e.g. replace beads in so-called “optical grippers” for indirect cell handling [10], and can also be used as optical trapping handles in optically-steered microtools [11, 12] and optical micro-assembly [13]. Optimized ...
... the optimization of light-matter interaction. Such force-optimized structures can, e.g. replace beads in so-called “optical grippers” for indirect cell handling [10], and can also be used as optical trapping handles in optically-steered microtools [11, 12] and optical micro-assembly [13]. Optimized ...
Herbig-Haro jet in the Haro 6–10 system
... Polarimetric studies of Haro 6–10 revealed very interesting properties of this object. The spectropolarimetric observations of Goodrich (1986) showed that Hα emission and probably forbidden lines as well, are polarized at the same level (3.49±0.07%) as the red continuum, at P.A. = 66±1◦ . Polarizati ...
... Polarimetric studies of Haro 6–10 revealed very interesting properties of this object. The spectropolarimetric observations of Goodrich (1986) showed that Hα emission and probably forbidden lines as well, are polarized at the same level (3.49±0.07%) as the red continuum, at P.A. = 66±1◦ . Polarizati ...
Get PDF - OSA Publishing
... flexible way of modifying the filtering properties of optical fibers, the nature of the non-linear interaction of the light and material unavoidably results in refractive index changes that are confined to the laser beam focus volume. This local confinement of the index change can be a drawback, as ...
... flexible way of modifying the filtering properties of optical fibers, the nature of the non-linear interaction of the light and material unavoidably results in refractive index changes that are confined to the laser beam focus volume. This local confinement of the index change can be a drawback, as ...
Analysis of Tilted Grating Etalon for DWDM Demultiplexer Sommart Sang-Ngern, Non-member
... outside etalon is 1, the angle between z axis and z axis is 0.645 rad, internal angle is 0.2 degree and coupling coefficient for period grating is 0.2/L. Fig.7 shows the transmission spectral of TGE as a function of wavelength in the range of 1350-1600 nm when the incident angle is varied 0-50 degre ...
... outside etalon is 1, the angle between z axis and z axis is 0.645 rad, internal angle is 0.2 degree and coupling coefficient for period grating is 0.2/L. Fig.7 shows the transmission spectral of TGE as a function of wavelength in the range of 1350-1600 nm when the incident angle is varied 0-50 degre ...
Fiber Accelerating Structures
... At higher wavelengths, past ~2.5µm, the refractive index fluctuates a large amount as various absorption peaks are hit. This changes the PBG, so a new structure is needed. Examined fiber structure at λ=16 µm, where n=1.484. This wavelength needs a larger defect to support the mode. (Expected defect ...
... At higher wavelengths, past ~2.5µm, the refractive index fluctuates a large amount as various absorption peaks are hit. This changes the PBG, so a new structure is needed. Examined fiber structure at λ=16 µm, where n=1.484. This wavelength needs a larger defect to support the mode. (Expected defect ...
Concepts of optical signal processing and optical communications
... microwave signals over electric cables or on rf and microwave electromagnetic radiation propagating in free space. This is remarkable because light appears a more natural choice as a carrier of information given the fact that – unlike radio waves – it did not have to be discovered. The lack of light ...
... microwave signals over electric cables or on rf and microwave electromagnetic radiation propagating in free space. This is remarkable because light appears a more natural choice as a carrier of information given the fact that – unlike radio waves – it did not have to be discovered. The lack of light ...
Transfer of Light Helicity to Nanostructures
... core of the optical vortex, thereby confining the melted metal in the core to form the chiral nanoneedle. In Gaussian beams that do not have an on-axis core, the collection of the melted metal does not occur efficiently. Figures 2(a) and 2(b) show SEM images of chiral nanoneedles fabricated by a lin ...
... core of the optical vortex, thereby confining the melted metal in the core to form the chiral nanoneedle. In Gaussian beams that do not have an on-axis core, the collection of the melted metal does not occur efficiently. Figures 2(a) and 2(b) show SEM images of chiral nanoneedles fabricated by a lin ...
Measurement of seawater refractive index and salinity by means of
... accurate measurement of seawater refractive index and salinity. The specific goal was to measure the refractive index of the water sample with an accuracy of 10−6 refractive index units (RIU). The size goal was set to be a cylindrical container with a height of 80 mm and a diameter of 36 mm. The rea ...
... accurate measurement of seawater refractive index and salinity. The specific goal was to measure the refractive index of the water sample with an accuracy of 10−6 refractive index units (RIU). The size goal was set to be a cylindrical container with a height of 80 mm and a diameter of 36 mm. The rea ...
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).