Optical fluctuations on the transmission and reflection of mesoscopic
... Finally these results as derived for an infinite disordered medium are applied to a slab geometry, where the appropriate boundary conditions are found from transport theory. The last part explains how the incoming and outgoing intensities are coupled to the intensity propagators inside the slab and g ...
... Finally these results as derived for an infinite disordered medium are applied to a slab geometry, where the appropriate boundary conditions are found from transport theory. The last part explains how the incoming and outgoing intensities are coupled to the intensity propagators inside the slab and g ...
Nonlinear Beam Shaping with Plasmonic Metasurfaces
... ABSTRACT: We present here a method for generating second-harmonic beams with tailored beam profiles using nonlinear metasurfaces based on split ring resonators. By manipulating both the phase and the amplitude of the quadratic nonlinear coefficient locally, at the single inclusion level, the emitted se ...
... ABSTRACT: We present here a method for generating second-harmonic beams with tailored beam profiles using nonlinear metasurfaces based on split ring resonators. By manipulating both the phase and the amplitude of the quadratic nonlinear coefficient locally, at the single inclusion level, the emitted se ...
Method and apparatus for gas discharge laser output light
... beam 40 as shoWn schematically in FIG. 1. One beam, e.g., 32 Would be the same orientation of the input beam 40 and the other 34 Would be inverted. If the prism 20 Were rotated, ...
... beam 40 as shoWn schematically in FIG. 1. One beam, e.g., 32 Would be the same orientation of the input beam 40 and the other 34 Would be inverted. If the prism 20 Were rotated, ...
CHAPTER 4 Fiber optic III: attenuation and dispersion
... It is be desirable to minimize dispersion at the wavelength of propagation. The Zero dispersion fibre is conveniently placed near 1310nm for SiO2 fibres. But what if we are using the third window? Also for multiple channel communication it may be desirable to have near zero dispersion for a range of ...
... It is be desirable to minimize dispersion at the wavelength of propagation. The Zero dispersion fibre is conveniently placed near 1310nm for SiO2 fibres. But what if we are using the third window? Also for multiple channel communication it may be desirable to have near zero dispersion for a range of ...
INVESTIGATION OF INJECTION MOLDING PROCESS FOR HIGH
... process has not been readily accepted in precision optical fabrication industry because several difficult issues such as geometry deviation, inhomogeneous index distribution, birefringence and freeform fabrication have hindered the implementation of injection molding process in high precision optica ...
... process has not been readily accepted in precision optical fabrication industry because several difficult issues such as geometry deviation, inhomogeneous index distribution, birefringence and freeform fabrication have hindered the implementation of injection molding process in high precision optica ...
MEMS Based Heavy Metal Detector Inas Raafat Ramsis
... I would like to express my deep thankfulness to all the people who helped me in fulfilling this research and rendering it to such a level. First and foremost, I would like to thank my supervisor Prof. Sherif Sedky for his valuable contributions to this research, and for his support, guidance, and hi ...
... I would like to express my deep thankfulness to all the people who helped me in fulfilling this research and rendering it to such a level. First and foremost, I would like to thank my supervisor Prof. Sherif Sedky for his valuable contributions to this research, and for his support, guidance, and hi ...
Optical Caustics Observed in Light Scattered by an Oblate Spheroid
... Debye process would be masked or obscured by light scattered at the same angle by all the other processes, and by its interference with the specific process being studied. To eliminate these masking effects, the calculations reported here consider only the p ¼ 2 Debye process of transmission followi ...
... Debye process would be masked or obscured by light scattered at the same angle by all the other processes, and by its interference with the specific process being studied. To eliminate these masking effects, the calculations reported here consider only the p ¼ 2 Debye process of transmission followi ...
Elaboration and optimization of tellurite-based
... only the largest T reported for these highly nonlinear glasses to date, but coincides with a commensurate decrease of the refractive index. A hydroxyl purification has been developed that when employed, resulted in high purity preform materials exhibiting a limited absorption in the transmission b ...
... only the largest T reported for these highly nonlinear glasses to date, but coincides with a commensurate decrease of the refractive index. A hydroxyl purification has been developed that when employed, resulted in high purity preform materials exhibiting a limited absorption in the transmission b ...
Recent Developments in Optofluidic Lens Technology
... density matched fluids is completely insensitive to accelerations, making such a design superior to any mechanical system with translatable solid lenses. Like oil–water density matching, covering the lens by an elastomeric membrane also provides superior stability against both gravitational distorti ...
... density matched fluids is completely insensitive to accelerations, making such a design superior to any mechanical system with translatable solid lenses. Like oil–water density matching, covering the lens by an elastomeric membrane also provides superior stability against both gravitational distorti ...
Optical grating coupler biosensor and biomedical applications Lorena Diéguez Moure
... from the bioreceptor into a measurable signal. When the analyte interacts with the bioreceptor, the transducer sends a signal that is processed by the electronics. All this process occurs in an efficient, quick, cheap, easy, simple and specific way. Regarding the type of the transductor, the biosens ...
... from the bioreceptor into a measurable signal. When the analyte interacts with the bioreceptor, the transducer sends a signal that is processed by the electronics. All this process occurs in an efficient, quick, cheap, easy, simple and specific way. Regarding the type of the transductor, the biosens ...
Simulation of Fiber Fuse Phenomenon in Single
... changed from T0 to T0 + 50 K. Furthermore, Kashyap et al. reported that the best fit between the experimental and theoretical fiber fuse velocities was obtained when the α value of the Ge-doped silica core at high temperatures of above T0 was fixed to be 4.0 ×104 m−1 at 1.064 µm [19]. Hand and Russe ...
... changed from T0 to T0 + 50 K. Furthermore, Kashyap et al. reported that the best fit between the experimental and theoretical fiber fuse velocities was obtained when the α value of the Ge-doped silica core at high temperatures of above T0 was fixed to be 4.0 ×104 m−1 at 1.064 µm [19]. Hand and Russe ...
Coupling Efficiency and Alignment Sensitivity of Single
... The modeling and experimental work were performed ·under contract DASG60-75-C-0060 Advanced Electronics and Digital Sensors Technology. The sponsoring agency is the Ballistic Missile Defense Advanced Technology Center Huntsville, Alabama. The contract monitor is Mr.. Buster E. Kelley. Preparation of ...
... The modeling and experimental work were performed ·under contract DASG60-75-C-0060 Advanced Electronics and Digital Sensors Technology. The sponsoring agency is the Ballistic Missile Defense Advanced Technology Center Huntsville, Alabama. The contract monitor is Mr.. Buster E. Kelley. Preparation of ...
Properties of a 4Pi confocal fluorescence microscope
... has a diameter somewhat larger than A/2. If this ideal illumination is approached and if two microscope objectives of high numerical aperture are used, a fluorescent sample can be illuminated coherently from both sides, and the fluorescence emission is also detected on both sides. This arrangement i ...
... has a diameter somewhat larger than A/2. If this ideal illumination is approached and if two microscope objectives of high numerical aperture are used, a fluorescent sample can be illuminated coherently from both sides, and the fluorescence emission is also detected on both sides. This arrangement i ...
Active Plasmonics: Surface Plasmon Interaction With Optical Emitters
... In our first study of active plasmonics, we discuss surface plasmon amplification. Several schemes utilizing various metal geometries and active media have been proposed to achieve surface plasmon amplification. Gain-assisted SPP propagation has been studied in planar metallic films, strips, and gra ...
... In our first study of active plasmonics, we discuss surface plasmon amplification. Several schemes utilizing various metal geometries and active media have been proposed to achieve surface plasmon amplification. Gain-assisted SPP propagation has been studied in planar metallic films, strips, and gra ...
The Scintillation Index In Moderate To Strong Turbulence
... Unfortunately, while the chief reason for lasers’ inherent advantages stem from having wavelengths of smaller magnitude than radio waves, it is also the chief reason for their disadvantages. Optical systems are much more susceptible to drops in channel visibility for a given threshold. In order to m ...
... Unfortunately, while the chief reason for lasers’ inherent advantages stem from having wavelengths of smaller magnitude than radio waves, it is also the chief reason for their disadvantages. Optical systems are much more susceptible to drops in channel visibility for a given threshold. In order to m ...
The effect of gamma radiation on fibre Bragg
... to ionizing radiation. Current research suggests that certain types of fibres manufactured by varying methods produce different results. The different responses to exposure from gamma irradiation between Germanium (Ge) doped optical fibres, with and without Hydrogen loading, along with the standard ...
... to ionizing radiation. Current research suggests that certain types of fibres manufactured by varying methods produce different results. The different responses to exposure from gamma irradiation between Germanium (Ge) doped optical fibres, with and without Hydrogen loading, along with the standard ...
James MacCullagh (1809‐47) Trinity Monday Memorial Discourse 2015 Professor James G Lunney FTCD MRIA
... the design which I had formed of treating the subject more fully at my leisure; nor can I do better than recommend it to those who wish to pursue the investigation through all their details. ...
... the design which I had formed of treating the subject more fully at my leisure; nor can I do better than recommend it to those who wish to pursue the investigation through all their details. ...
Anti-reflective coating
An antireflective or anti-reflection (AR) coating is a type of optical coating applied to the surface of lenses and other optical elements to reduce reflection. In typical imaging systems, this improves the efficiency since less light is lost. In complex systems such as a telescope, the reduction in reflections also improves the contrast of the image by elimination of stray light. This is especially important in planetary astronomy. In other applications, the primary benefit is the elimination of the reflection itself, such as a coating on eyeglass lenses that makes the eyes of the wearer more visible to others, or a coating to reduce the glint from a covert viewer's binoculars or telescopic sight.Many coatings consist of transparent thin film structures with alternating layers of contrasting refractive index. Layer thicknesses are chosen to produce destructive interference in the beams reflected from the interfaces, and constructive interference in the corresponding transmitted beams. This makes the structure's performance change with wavelength and incident angle, so that color effects often appear at oblique angles. A wavelength range must be specified when designing or ordering such coatings, but good performance can often be achieved for a relatively wide range of frequencies: usually a choice of IR, visible, or UV is offered.