Cost-effective optical coherence tomography spectrometer based on
... demonstrated and depict a reasonable image quality for this preliminary low cost system that is well comparable to competing devices. Further improvement of the optical design and the TFBG fabrication process have potential to optimize the TFBG spectrometer towards smaller size and higher efficiency ...
... demonstrated and depict a reasonable image quality for this preliminary low cost system that is well comparable to competing devices. Further improvement of the optical design and the TFBG fabrication process have potential to optimize the TFBG spectrometer towards smaller size and higher efficiency ...
Following the path of light: recovering and
... To clarify what we mean by following the path of light, let us first discuss a simple experiment we use to introduce the problem of vision to students. Let us consider the object in Fig. 1(a), which is a small plastic box containing transparent gel deco beads and water. Refractive index of beads is v ...
... To clarify what we mean by following the path of light, let us first discuss a simple experiment we use to introduce the problem of vision to students. Let us consider the object in Fig. 1(a), which is a small plastic box containing transparent gel deco beads and water. Refractive index of beads is v ...
FRAUNHOFER and FRESNEL DIFFRACTION
... A. Fraunhofer Diffraction With a point source and without lenses, we can satisfy the conditions for Fraunhofer diffraction by a particular object only if it is a sufficiently large distance from both the source and the observing screen. For a single slit of width b, the Fraunhofer condition without ...
... A. Fraunhofer Diffraction With a point source and without lenses, we can satisfy the conditions for Fraunhofer diffraction by a particular object only if it is a sufficiently large distance from both the source and the observing screen. For a single slit of width b, the Fraunhofer condition without ...
Single-Photon Synchronous Detection
... scheme based on two acquisition phases. In the first acquisition phase, the pixel-level demultiplexer switches between two counters so as to generate two samples, C0 and C180, corresponding to 0° and 180° of phase with respect SMOD. Once these two samples are acquired and readout, the sensor operate ...
... scheme based on two acquisition phases. In the first acquisition phase, the pixel-level demultiplexer switches between two counters so as to generate two samples, C0 and C180, corresponding to 0° and 180° of phase with respect SMOD. Once these two samples are acquired and readout, the sensor operate ...
WHAT IS THE OPTICAL COMPUTING?
... High performance computing has gained momentum in recent years ,with efforts to optimize all the resources of electronic computing and researcher brain power in order to increase computing throughput. Optical computing is atopic of current support in many places , with private companies as well as g ...
... High performance computing has gained momentum in recent years ,with efforts to optimize all the resources of electronic computing and researcher brain power in order to increase computing throughput. Optical computing is atopic of current support in many places , with private companies as well as g ...
Direct microscopic count
... Direct microscopic counts are possible using special slides known as counting chambers, consisting of a ruled slide and a cover slip. It is constructed in such a manner that the cover slip, slide, and ruled lines delimit a known volume. The number of bacteria in a small known volume is directly coun ...
... Direct microscopic counts are possible using special slides known as counting chambers, consisting of a ruled slide and a cover slip. It is constructed in such a manner that the cover slip, slide, and ruled lines delimit a known volume. The number of bacteria in a small known volume is directly coun ...
Wavefront shaping of infrared light through a subwavelength hole
... similar to Figure 2a1, the lengths of these strips are approximately 6 mm, which are consistent with the writing strip sources; the widths are approximately 1 mm, whereas the writing strip widths are 0.4 mm. This imaging width implies that the minimum resolution of this imaging system is approximate ...
... similar to Figure 2a1, the lengths of these strips are approximately 6 mm, which are consistent with the writing strip sources; the widths are approximately 1 mm, whereas the writing strip widths are 0.4 mm. This imaging width implies that the minimum resolution of this imaging system is approximate ...
Paper
... The Letter by Deng et al. [1] presents an analytic theoretical description of matter-wave superradiance [2] which claims to go beyond previous theoretical frameworks. I show here that the theory presented in this Letter is not a description of superradiance per se, but rather an elegant perturbative ...
... The Letter by Deng et al. [1] presents an analytic theoretical description of matter-wave superradiance [2] which claims to go beyond previous theoretical frameworks. I show here that the theory presented in this Letter is not a description of superradiance per se, but rather an elegant perturbative ...
1. Which of the following statement are true about "LED life" term?
... 2. Which are the main parameters of an LED that are affected by temperature? Luminous intensity (brightness) ...
... 2. Which are the main parameters of an LED that are affected by temperature? Luminous intensity (brightness) ...
View/Open
... In Positive phase contrast: structure with higher RI looks darker. Cell nuclei, nucleoli, mitochondria, ribosomes looks darker than media. Pinocytic vesicles, vacuoles, lipid droplet, looks brighter than media, it is not thinner though The darker region is not necessarily the thick region, it is reg ...
... In Positive phase contrast: structure with higher RI looks darker. Cell nuclei, nucleoli, mitochondria, ribosomes looks darker than media. Pinocytic vesicles, vacuoles, lipid droplet, looks brighter than media, it is not thinner though The darker region is not necessarily the thick region, it is reg ...
Ongoing Research Works
... little dye leakage. Using appropriate synthetic conditions, a large number of dye molecules can be incorporated inside a single silica particle which produces a highly amplified optically signal compared with a single dye molecule. Moreover, as the dye is trapped inside the silica matrix, which prov ...
... little dye leakage. Using appropriate synthetic conditions, a large number of dye molecules can be incorporated inside a single silica particle which produces a highly amplified optically signal compared with a single dye molecule. Moreover, as the dye is trapped inside the silica matrix, which prov ...
X-ray phase contrast microscopy at 300 nm
... contributing to the achievable contrast and the resolution in propagation-based phase contrast imaging are the degree of coherence of the incoming beam (related to the source size and the distance source-sample) and the detector resolution [7]. Therefore phase contrast x-ray imaging in propagation i ...
... contributing to the achievable contrast and the resolution in propagation-based phase contrast imaging are the degree of coherence of the incoming beam (related to the source size and the distance source-sample) and the detector resolution [7]. Therefore phase contrast x-ray imaging in propagation i ...
Lecture 12: Fraunhofer diffraction by a single slit
... History of discovery of diffraction The effects of diffraction of light were first observed and characterized by Francesco Maria Grimaldi in the 17th century. James Gregory (1638–1675) observed the diffraction patterns caused by a bird feather. Thomas Young performed a celebrated experiment in 1803 ...
... History of discovery of diffraction The effects of diffraction of light were first observed and characterized by Francesco Maria Grimaldi in the 17th century. James Gregory (1638–1675) observed the diffraction patterns caused by a bird feather. Thomas Young performed a celebrated experiment in 1803 ...
Optical Diffraction and Image Formation
... We will now explain Huygen’s wavelet theory, and then develop the so-called Fraunhofer theory for diffraction. Expansion on the lecture’s material (this is optional reading material) If you imagine a slide projector’s slide in a parallel light path (and we don’t have any lens here at the moment), th ...
... We will now explain Huygen’s wavelet theory, and then develop the so-called Fraunhofer theory for diffraction. Expansion on the lecture’s material (this is optional reading material) If you imagine a slide projector’s slide in a parallel light path (and we don’t have any lens here at the moment), th ...
Lecture 5
... • reducing wavelength (193nm -> 157nm ->13.6 nm) • increasing NA (but also decreasing the DOF) ...
... • reducing wavelength (193nm -> 157nm ->13.6 nm) • increasing NA (but also decreasing the DOF) ...
Inverse scattering for frequency-scanned full-field
... within a coherence length of the focal plane produce scattered fields that will interfere with the reference. By recording the interference, an image of a slice of the sample around the focal plane is obtained, and the out-of-focus contributions are removed by coherence gating. The usual technique i ...
... within a coherence length of the focal plane produce scattered fields that will interfere with the reference. By recording the interference, an image of a slice of the sample around the focal plane is obtained, and the out-of-focus contributions are removed by coherence gating. The usual technique i ...
offr-ee230
... wavelength and the resonant line width. Stored energy divided by the power lost per optical cycle. (typically: 104 – 109) ...
... wavelength and the resonant line width. Stored energy divided by the power lost per optical cycle. (typically: 104 – 109) ...
micro-bending, macro-bending and less bend sensitive optical
... Macro-bends can be most easily classified as being optical fibres, or cables containing optical fibres, that are subjected to bend radii below the manufacturers recommended values to such an extent that the light cannot be guided along the core of optical fibre – thereby resulting in attenuation i.e ...
... Macro-bends can be most easily classified as being optical fibres, or cables containing optical fibres, that are subjected to bend radii below the manufacturers recommended values to such an extent that the light cannot be guided along the core of optical fibre – thereby resulting in attenuation i.e ...
Laser III - Universiti Sains Malaysia
... Schematic illustration of the the structure of a double heterojunction stripe contact laser diode © 1999 S.O. Kasap, Optoelectronics (Prentice Hall) ...
... Schematic illustration of the the structure of a double heterojunction stripe contact laser diode © 1999 S.O. Kasap, Optoelectronics (Prentice Hall) ...
Ingen lysbildetittel - Department of Telematics
... applications; e.g. for optical networking • The general purpose computer should not be an optical blueprint of electronic systems • Poor cascadability is currently the main impediment to general purpose optical computer • Quantum effects enables small, power-efficient and computationally efficient a ...
... applications; e.g. for optical networking • The general purpose computer should not be an optical blueprint of electronic systems • Poor cascadability is currently the main impediment to general purpose optical computer • Quantum effects enables small, power-efficient and computationally efficient a ...
Probing cytoplasmic viscosity in the confined geometry of
... Recovery After Photobleaching (FRAP). When possible, single particle tracking gives excellent results, but this approach requires being able to image and track single fluorescently labeled targets in three dimensions, over the time scales relevant to the objects’ motion [25]. FCS is an attractive al ...
... Recovery After Photobleaching (FRAP). When possible, single particle tracking gives excellent results, but this approach requires being able to image and track single fluorescently labeled targets in three dimensions, over the time scales relevant to the objects’ motion [25]. FCS is an attractive al ...
Quadriwave lateral shearing interferometry
... measurement of the optical path length distribution that allows living cells to be described with a diffraction-limited transverse resolution and a sub-wavelength axial accuracy [9]. More recently, this method was applied to perform optical diffraction tomography of a pollen grain [10], and tomograp ...
... measurement of the optical path length distribution that allows living cells to be described with a diffraction-limited transverse resolution and a sub-wavelength axial accuracy [9]. More recently, this method was applied to perform optical diffraction tomography of a pollen grain [10], and tomograp ...
Univet Loupes
... All specifications and descriptions are subject to change without notice All rights reserved. Text, images, graphics are subject to copyright and other protective laws. The content of this publication may not be copied, distributed or modified for commercial purposes without written authorization by ...
... All specifications and descriptions are subject to change without notice All rights reserved. Text, images, graphics are subject to copyright and other protective laws. The content of this publication may not be copied, distributed or modified for commercial purposes without written authorization by ...
Confocal microscopy
Confocal microscopy is an optical imaging technique for increasing optical resolution and contrast of a micrograph by means of adding a spatial pinhole placed at the confocal plane of the lens to eliminate out-of-focus light. It enables the reconstruction of three-dimensional structures from the obtained images. This technique has gained popularity in the scientific and industrial communities and typical applications are in life sciences, semiconductor inspection and materials science.