Bild 1
... active region is absorbed by the substrate. Absorption of light can be avoided by placing a reflector between the substrate and the LED active layers. Light emanating from the active region towards the substrate will then be reflected and can escape from the semiconductor through the top surface. DB ...
... active region is absorbed by the substrate. Absorption of light can be avoided by placing a reflector between the substrate and the LED active layers. Light emanating from the active region towards the substrate will then be reflected and can escape from the semiconductor through the top surface. DB ...
Coupling to aeroGAIN-ROD fibers
... NKT Photonics A/S – Blokken 84, 3460 Birkerød, Denmark – Phone: +45 4348 3900 – fax: +45 4348 3901 – www.nktphotonics.com ...
... NKT Photonics A/S – Blokken 84, 3460 Birkerød, Denmark – Phone: +45 4348 3900 – fax: +45 4348 3901 – www.nktphotonics.com ...
PC 481 Fiber Optics Lab Manual
... may require that fiber connections have specific optical properties (low loss) that are met only by fiber-splicing. In this lab we use fusion splicing technique for fiber splicing. A fusion splice is a fiber splice where localized heat fuses or melts the ends of two optical fibers together. Low-loss ...
... may require that fiber connections have specific optical properties (low loss) that are met only by fiber-splicing. In this lab we use fusion splicing technique for fiber splicing. A fusion splice is a fiber splice where localized heat fuses or melts the ends of two optical fibers together. Low-loss ...
Total Reflection X-Ray Fluorescence Spectrometer
... so that the origin of the LS is placed on the apparent focus spot of the x-ray tube. In this setup the intensity of the excitation beam is increased comparing with the prototype instrument, because the distance between x-ray source and a sample is reduced and the intensity at the focus spot is much ...
... so that the origin of the LS is placed on the apparent focus spot of the x-ray tube. In this setup the intensity of the excitation beam is increased comparing with the prototype instrument, because the distance between x-ray source and a sample is reduced and the intensity at the focus spot is much ...
Images and Plane Mirrors
... can be seen where backward extensions of reflected rays pass through one another. The object’s distance p from the mirror is related to the (apparent) image distance i from the mirror by (a) Object distance p is a positive quantity. Image distance i for a virtual image is a negative quantity. Only r ...
... can be seen where backward extensions of reflected rays pass through one another. The object’s distance p from the mirror is related to the (apparent) image distance i from the mirror by (a) Object distance p is a positive quantity. Image distance i for a virtual image is a negative quantity. Only r ...
Near-perfect hologram reconstruction with a spatial light modulator
... the two-dimensional Fourier transform of the desired holographic image (optionally superposed with a parabolic phase term to control the imaging distance) onto an incoming wave. However, in practice the “imprinting process” is difficult. One reason for this is that the twodimensional Fourier transfo ...
... the two-dimensional Fourier transform of the desired holographic image (optionally superposed with a parabolic phase term to control the imaging distance) onto an incoming wave. However, in practice the “imprinting process” is difficult. One reason for this is that the twodimensional Fourier transfo ...
Reverse Iontophoresis - Faculty Server Contact
... Light is focused on some area of the body Light is absorbed and reflected in different ways Subcategories include near-infrared, midinfrared, and photoacoustic spectroscopy. ...
... Light is focused on some area of the body Light is absorbed and reflected in different ways Subcategories include near-infrared, midinfrared, and photoacoustic spectroscopy. ...
Microscope
... Bacterial or animal cells are difficult to be seen using the light microscope unless the sample is dried and stained. This microscope enhances the slight difference in refractive index between the cells and the medium and thus can be used to visualize the living bacteria and platelets, in which the ...
... Bacterial or animal cells are difficult to be seen using the light microscope unless the sample is dried and stained. This microscope enhances the slight difference in refractive index between the cells and the medium and thus can be used to visualize the living bacteria and platelets, in which the ...
Depth of field and improved resolution of slit-scan flow systems
... 5. The system should work for laser intensities of several hundred mW and a variety of laser wavelength from UV (typically 350 nm) to green and red (typically 500 - 600 nm). ...
... 5. The system should work for laser intensities of several hundred mW and a variety of laser wavelength from UV (typically 350 nm) to green and red (typically 500 - 600 nm). ...
Two-dimensional array of diffractive microlenses
... certain thickness. By repeating the process several times, we can generate multilevel phase components. It is important to note, that to create a structure with 2 k discrete levels, only k repetitive steps are required. This is achieved by a binary decomposition of the final phase pattern as visuali ...
... certain thickness. By repeating the process several times, we can generate multilevel phase components. It is important to note, that to create a structure with 2 k discrete levels, only k repetitive steps are required. This is achieved by a binary decomposition of the final phase pattern as visuali ...
Direct Patterning of Three-Dimensional Periodic
... photoresist was then exposed to UV light for 3 min through the mask using a UV aligner (HTG, 365 nm). After exposure, the samples were developed in SU-8 developer for an hour and then gently air-dried. Figure 2a shows the resulting structure viewed at a 52° angle relative to the surface normal. An S ...
... photoresist was then exposed to UV light for 3 min through the mask using a UV aligner (HTG, 365 nm). After exposure, the samples were developed in SU-8 developer for an hour and then gently air-dried. Figure 2a shows the resulting structure viewed at a 52° angle relative to the surface normal. An S ...
ABSTRACT Dissertation: STUDIES OF
... diffraction happen when the object size is on the same order of the impinging light wavelength. However, when the dimension of an object is in the nanometer range, a lot of optical properties change. For example, from Ebbesen’s reports1,2 in Nature 1998 and 2003, showed that there was enormous trans ...
... diffraction happen when the object size is on the same order of the impinging light wavelength. However, when the dimension of an object is in the nanometer range, a lot of optical properties change. For example, from Ebbesen’s reports1,2 in Nature 1998 and 2003, showed that there was enormous trans ...
new challenges in thermo-fluiddynamic research by advanced
... availability of new equipment like high energy light sources, intensified electronical camera systems, and electronic devices as well as new software. This fact allows to reduce the time of data processing which has been very time consuming in the past. It can be distinguished between imaging and no ...
... availability of new equipment like high energy light sources, intensified electronical camera systems, and electronic devices as well as new software. This fact allows to reduce the time of data processing which has been very time consuming in the past. It can be distinguished between imaging and no ...
Broadband Semiconductor Light Source for Optical Sensing
... of light in the near-infrared region having wavelengths around 0.6 μm to 1.2 μm through living organisms. In optical sensing, a broadband spectrum light source which is capable of emitting light of different wavelengths is used in order to increase the amount of data from the object. Although there ...
... of light in the near-infrared region having wavelengths around 0.6 μm to 1.2 μm through living organisms. In optical sensing, a broadband spectrum light source which is capable of emitting light of different wavelengths is used in order to increase the amount of data from the object. Although there ...
Polarization-dependent Goos-Hänchen shift at a graded dielectric
... total internal reflection in a 1D graded dielectric structure (see Fig. 1). Because we are interested in beam displacements in the plane of incidence, it is sufficient to analyze Maxwell’s equation in two dimensions. For simplicity we assume an infinitely extended refractive-index gradient. The grad ...
... total internal reflection in a 1D graded dielectric structure (see Fig. 1). Because we are interested in beam displacements in the plane of incidence, it is sufficient to analyze Maxwell’s equation in two dimensions. For simplicity we assume an infinitely extended refractive-index gradient. The grad ...
Edge-enhanced imaging with polyvinyl alcohol/acrylamide photopolymer gratings 1510
... angular response (in intensity) of the transmitted order as a function of reconstruction angle ur for a He –Ne laser beam. We see that the Bragg angle is 20.8± with a diffraction efficiency of 93%, close to the theoretical maximum of 100%. Circles represent experimental measurements, whereas the con ...
... angular response (in intensity) of the transmitted order as a function of reconstruction angle ur for a He –Ne laser beam. We see that the Bragg angle is 20.8± with a diffraction efficiency of 93%, close to the theoretical maximum of 100%. Circles represent experimental measurements, whereas the con ...
ZnO/SiO2 microcavity modulator on silicon Abstract - Paul
... Microcavity-based light modulators of the type in Fig. 1(a), fabricated using epitaxiallygrown (Al,Ga)As structures, have intensity ratios R1 between impinging and back-diffracted light beams approaching 50%.3,6 Their fabrication requires piezoelectric layers with a high refractive index contrast to ...
... Microcavity-based light modulators of the type in Fig. 1(a), fabricated using epitaxiallygrown (Al,Ga)As structures, have intensity ratios R1 between impinging and back-diffracted light beams approaching 50%.3,6 Their fabrication requires piezoelectric layers with a high refractive index contrast to ...
Waves, Photons and Medical Physics
... INFORMATION FOR CANDIDATES The total mark for this paper is 75. Quality of written communication will be assessed in question 2. Figures in brackets printed down the right-hand side of pages indicate the marks awarded to each question. Your attention is drawn to the Data and Formulae Sheet which is ...
... INFORMATION FOR CANDIDATES The total mark for this paper is 75. Quality of written communication will be assessed in question 2. Figures in brackets printed down the right-hand side of pages indicate the marks awarded to each question. Your attention is drawn to the Data and Formulae Sheet which is ...
Partially coherent image formation with x
... Unlike conventional refractive lenses, the focusing properties of zone plates are based on diffraction. This implies that the focal length of a zone plate lens strongly depends on the wavelength and that multiple diffraction orders exist. In most cases only the first diffraction order is used. The d ...
... Unlike conventional refractive lenses, the focusing properties of zone plates are based on diffraction. This implies that the focal length of a zone plate lens strongly depends on the wavelength and that multiple diffraction orders exist. In most cases only the first diffraction order is used. The d ...