Medical applications of Terahertz Imaging: a Review of Current
... sources and detectors lead to this band of the spectrum being referred to as the ‘THz Gap’. In recent times however, advances in technology have made possible the production and detection of THz radiation with solid-state devices operating at room temperature [1, 2]. In so doing, a previously unavai ...
... sources and detectors lead to this band of the spectrum being referred to as the ‘THz Gap’. In recent times however, advances in technology have made possible the production and detection of THz radiation with solid-state devices operating at room temperature [1, 2]. In so doing, a previously unavai ...
Porous Waveguide in the Kretschmann Configuration for Small Molecule Detection
... gives rise to the guided mode near 55˚ while the PSi film formed at 57 mA/cm2 for 25 seconds gives rise to the waveguide resonance near 60˚. We note that examination of the electric field distributions indicated that the mode near 55˚ is a 1st order mode while the mode near 60˚ is a 0th order mode. ...
... gives rise to the guided mode near 55˚ while the PSi film formed at 57 mA/cm2 for 25 seconds gives rise to the waveguide resonance near 60˚. We note that examination of the electric field distributions indicated that the mode near 55˚ is a 1st order mode while the mode near 60˚ is a 0th order mode. ...
The American University in Cairo School of Science and Engineering
... to the left strip after 6μm at s=100nm and air filling in the slot. (c) The coupling from the right to left strip after 18μm at s =30nm. ................................................................................................... 91 Fig. 41 . The normalized power swapped between the two mod ...
... to the left strip after 6μm at s=100nm and air filling in the slot. (c) The coupling from the right to left strip after 18μm at s =30nm. ................................................................................................... 91 Fig. 41 . The normalized power swapped between the two mod ...
optical resonances in multilayer structures
... related to the electric and magnetic fields by the dimensionless electric and magnetic susceptibilities χe and χm . The constants of proportionality are called relative electric permittivity ǫr = 1 + χe and relative magnetic permeability µr = 1 + χm . They may depend on the position for inhomogeneou ...
... related to the electric and magnetic fields by the dimensionless electric and magnetic susceptibilities χe and χm . The constants of proportionality are called relative electric permittivity ǫr = 1 + χe and relative magnetic permeability µr = 1 + χm . They may depend on the position for inhomogeneou ...
Composite optical vortices - RIT Center for Imaging Science
... carries orbital angular momentum.12 In general, when one beam is superimposed with another, the phase of the composite field differs from that of the component beams. Being a topological phase structure, an optical vortex is readily affected when it is combined with other fields. The new or ‘‘compos ...
... carries orbital angular momentum.12 In general, when one beam is superimposed with another, the phase of the composite field differs from that of the component beams. Being a topological phase structure, an optical vortex is readily affected when it is combined with other fields. The new or ‘‘compos ...
Development of Mirror Coatings for Gravitational Wave Detectors
... events. In September and December 2015, Advanced LIGO (aLIGO) [2] detected gravitational waves associated with the merger of stellar mass black holes [3,4], opening a new area of observational astronomy and shedding new insight on the relativistic nature of our Universe. General relativity describes ...
... events. In September and December 2015, Advanced LIGO (aLIGO) [2] detected gravitational waves associated with the merger of stellar mass black holes [3,4], opening a new area of observational astronomy and shedding new insight on the relativistic nature of our Universe. General relativity describes ...
PDF
... much less expensive (~5 times less) than the Ti:Sapphire femtosecond laser and pump. In addition, the Nd:Glass laser is compact (630mm x 320 mm x 160 mm) and can be more easily integrated into a robust and portable system for OCT imaging in the clinical setting. We have also designed a reflective gr ...
... much less expensive (~5 times less) than the Ti:Sapphire femtosecond laser and pump. In addition, the Nd:Glass laser is compact (630mm x 320 mm x 160 mm) and can be more easily integrated into a robust and portable system for OCT imaging in the clinical setting. We have also designed a reflective gr ...
DESIGN, FABRICATION AND CHARACTERIZATION OF GUIDED
... applications where a high refractive index and low extinction coefficient is desired. We design transmission filters for both transverse electric (TE) and transverse magnetic (TM) polarizations and experimentally demonstrate a simple and geometrically tunable narrowband transmission filter for TM po ...
... applications where a high refractive index and low extinction coefficient is desired. We design transmission filters for both transverse electric (TE) and transverse magnetic (TM) polarizations and experimentally demonstrate a simple and geometrically tunable narrowband transmission filter for TM po ...
Concentration effect of carbon nanotube based saturable
... developed by a simple spin or spray coating process [6–10]. Because the absorption band of the SWCNTs can be shifted by varying their diameters to operate a broad spectral range, the SWCNTs enable the fabrication of a broadband saturable absorbing element with ultrashort recovery time [6]. Therefore ...
... developed by a simple spin or spray coating process [6–10]. Because the absorption band of the SWCNTs can be shifted by varying their diameters to operate a broad spectral range, the SWCNTs enable the fabrication of a broadband saturable absorbing element with ultrashort recovery time [6]. Therefore ...
Microscopy - PSSurvival.com
... Dispersion staining is an optical technique that results in a colored image of a colorless object. This is an optical staining technique and requires no stains or dyes to produce a color effect. There are five different microscope configurations used in the broader technique of dispersion staining. ...
... Dispersion staining is an optical technique that results in a colored image of a colorless object. This is an optical staining technique and requires no stains or dyes to produce a color effect. There are five different microscope configurations used in the broader technique of dispersion staining. ...
Elastic stretchable optical fibers
... magnilication. The microstructure allows the fiber to guide only a single mode of light even though its core is 40 pm. which is greater than the 8 pm typically required guide single modes of light. Figure reproduced from [51. ...
... magnilication. The microstructure allows the fiber to guide only a single mode of light even though its core is 40 pm. which is greater than the 8 pm typically required guide single modes of light. Figure reproduced from [51. ...
A study on optical absorption and constants of doped poly(ethylene
... Polymer composites and polymer electrolytes are the most widely used materials in the past few decades. Understanding their properties is extremely important not only for scientific knowledge but also for modern and advanced technological applications. Most polymeric materials are poor conductors of ...
... Polymer composites and polymer electrolytes are the most widely used materials in the past few decades. Understanding their properties is extremely important not only for scientific knowledge but also for modern and advanced technological applications. Most polymeric materials are poor conductors of ...
Fiber Optics
... two polarization components changes during the propagation through the fiber. The resulting polarization (the sum of two vectors) thus is periodic. This periodic change in the polarization can be observed as a modulation in the light scattered at right angles. The fiber length over which the polariz ...
... two polarization components changes during the propagation through the fiber. The resulting polarization (the sum of two vectors) thus is periodic. This periodic change in the polarization can be observed as a modulation in the light scattered at right angles. The fiber length over which the polariz ...
Optical Indicatrix
... In monoclinic minerals, the b crystallographic axis coincides with the single 2-fold rotation axis and/or is perpendicular to the single mirror plane. The a axes and c axes are perpendicular to b and intersect in an obtuse angle. One indicatrix axis, which could either be X, Y or Z, is always parall ...
... In monoclinic minerals, the b crystallographic axis coincides with the single 2-fold rotation axis and/or is perpendicular to the single mirror plane. The a axes and c axes are perpendicular to b and intersect in an obtuse angle. One indicatrix axis, which could either be X, Y or Z, is always parall ...
sensors Chemical Sensing Using Fiber Cavity Ring-Down Spectroscopy
... time decreases with increasing optical loss in the waveguide cavity. Fiber Bragg grating (FBG) cavities have a very narrow bandwidth of only about 2-5 nm; therefore they are limited in their use for spectroscopic measurements. However, they are easy to align and are well suited for mechanical measur ...
... time decreases with increasing optical loss in the waveguide cavity. Fiber Bragg grating (FBG) cavities have a very narrow bandwidth of only about 2-5 nm; therefore they are limited in their use for spectroscopic measurements. However, they are easy to align and are well suited for mechanical measur ...
Lecture-10-Optics
... Flat dielectric or metal mirror. Cylindrical wavefront coming from the source at S. Note that at glancing incidence, i 90, the amplitude reflection coef. = -1 which yields a phase shift of = = k(r1-r2) Therefore, I 4 I cos 2 4 I cos 2 ay 4 I sin 2 ay ; y ...
... Flat dielectric or metal mirror. Cylindrical wavefront coming from the source at S. Note that at glancing incidence, i 90, the amplitude reflection coef. = -1 which yields a phase shift of = = k(r1-r2) Therefore, I 4 I cos 2 4 I cos 2 ay 4 I sin 2 ay ; y ...
The orbital angular momentum of light: Genesis and
... the spin would be expected to be the generator of the rotations of the vectorial dependence of the fields, leaving their spatial distribution unchanged. This, in turn, would reflect onto the formulation of two independent conservation laws, one for OAM and one for SAM, that relate the time changes of ...
... the spin would be expected to be the generator of the rotations of the vectorial dependence of the fields, leaving their spatial distribution unchanged. This, in turn, would reflect onto the formulation of two independent conservation laws, one for OAM and one for SAM, that relate the time changes of ...
Parallelized STED fluorescence nanoscopy
... the sample and adjusting ISTED one can define the coordinate in space where the fluorophores can still assume the fluorescent state, i.e. are not 'switched off' by the enforced occupation of the ground state [9, 10]. The most common STED microscopy configuration is to overlay a diffraction-limited f ...
... the sample and adjusting ISTED one can define the coordinate in space where the fluorophores can still assume the fluorescent state, i.e. are not 'switched off' by the enforced occupation of the ground state [9, 10]. The most common STED microscopy configuration is to overlay a diffraction-limited f ...
Retarder Principles
... crystal layer between parallel windows spaced a few microns apart. Different liquid crystal materials range in birefringence from 0.05 to 0.26, enabling fabrication of thin, true zero-order retarders in the visible to near infrared region. Fresnel Rhombs use total internal reflection to create a pha ...
... crystal layer between parallel windows spaced a few microns apart. Different liquid crystal materials range in birefringence from 0.05 to 0.26, enabling fabrication of thin, true zero-order retarders in the visible to near infrared region. Fresnel Rhombs use total internal reflection to create a pha ...
Paraxial Optics
... trigonometric functions. The blue curve is for the sine (always negative, i.e., the paraxial approach is larger than the exact function), the green is for the tangent (always positive, i.e., the paraxial approach is smaller than the exact function), and the red one is for the cosine (plotted on the ...
... trigonometric functions. The blue curve is for the sine (always negative, i.e., the paraxial approach is larger than the exact function), the green is for the tangent (always positive, i.e., the paraxial approach is smaller than the exact function), and the red one is for the cosine (plotted on the ...
Comparison of optical and microphysical properties of pure Saharan
... 2010b]. The instrument was equipped with a novel measurement channel at 1638 nm. We expect this channel to improve the retrieval accuracy of some of the data products, as for instance the particle size distribution. [21] Another important output parameter of our study is the aspect ratio. Particles ...
... 2010b]. The instrument was equipped with a novel measurement channel at 1638 nm. We expect this channel to improve the retrieval accuracy of some of the data products, as for instance the particle size distribution. [21] Another important output parameter of our study is the aspect ratio. Particles ...