Physics 102 Lab 8: Measuring wavelengths with a
... The diffraction of classical waves refers to the phenomenon wherein the waves encounter an obstacle that fragments the wave into components that interfere with one another. Interference simply means that the wavefronts add together to make a new wave which can be significantly different than the ori ...
... The diffraction of classical waves refers to the phenomenon wherein the waves encounter an obstacle that fragments the wave into components that interfere with one another. Interference simply means that the wavefronts add together to make a new wave which can be significantly different than the ori ...
1489_1.pdf
... generation spots are superimposed, the detection should be separated from the generation by a certain distance. On the contrary, the depth evaluation becomes very difficult if on uses too wide separation (too large incident and detection angle). In fact, even the artificial slot, it was impossible t ...
... generation spots are superimposed, the detection should be separated from the generation by a certain distance. On the contrary, the depth evaluation becomes very difficult if on uses too wide separation (too large incident and detection angle). In fact, even the artificial slot, it was impossible t ...
Depth Estimation and Focus Recovery
... Then, we discuss the issue on focus recovery. There exist some problems in optical image processing like aberrations of camera, structure of zoom lens, blurring model and geometric optics and so on. Later, we will make a introduction to Fourier Optics and optics analyzed by the linear canonical tran ...
... Then, we discuss the issue on focus recovery. There exist some problems in optical image processing like aberrations of camera, structure of zoom lens, blurring model and geometric optics and so on. Later, we will make a introduction to Fourier Optics and optics analyzed by the linear canonical tran ...
Long Haul Fiber Optic Transmission Systems : Modeling and
... the USSR proposed to make use of stimulated emission for the construction of coherent optical sources. – In 1960- Maiman demonstrated the first laser. – In 1970, Hayashi et al demonstrated GaAs semiconductor laser operating at room temperature. ...
... the USSR proposed to make use of stimulated emission for the construction of coherent optical sources. – In 1960- Maiman demonstrated the first laser. – In 1970, Hayashi et al demonstrated GaAs semiconductor laser operating at room temperature. ...
Microscopy
... and focus until you achieve optimal contrast. For most samples, the optimal condenser position is near the top. The microscope used in this exercise is not parfocal and the system will need to be adjusted for each objective. ...
... and focus until you achieve optimal contrast. For most samples, the optimal condenser position is near the top. The microscope used in this exercise is not parfocal and the system will need to be adjusted for each objective. ...
Electromagnetic forces and torques in nanoparticles irradiated by
... Eq. (4) has been used here to obtain the torque acting on metallic and dielectric whiskers illuminated by a light plane wave, as shown in Fig. 1. In the case of silver particles, the scattering cross section, which is directly obtained from the scattering amplitude, shows a pronounced resonance when ...
... Eq. (4) has been used here to obtain the torque acting on metallic and dielectric whiskers illuminated by a light plane wave, as shown in Fig. 1. In the case of silver particles, the scattering cross section, which is directly obtained from the scattering amplitude, shows a pronounced resonance when ...
Fundamental Limit to Linear One-Dimensional Slow Light Structures
... For an ideal dispersive material, Tucker et al. [7] give a delay-bandwidth product limit of ( L / λc )(navg − nmin ) . Since navg ≥ 1 in a loss-less material, our limit always somewhat exceeds that of Tucker et al. [7] for this case by a factor ~ navg . For a set of coupled resonators (including the ...
... For an ideal dispersive material, Tucker et al. [7] give a delay-bandwidth product limit of ( L / λc )(navg − nmin ) . Since navg ≥ 1 in a loss-less material, our limit always somewhat exceeds that of Tucker et al. [7] for this case by a factor ~ navg . For a set of coupled resonators (including the ...
SPDM: light microscopy with single
... two opposing high numerical aperture lenses to concentrate two coherent opposing laser beams in a joint focus, confocal laser scanning 4Pi microscopy [5–9] has become an established ‘nanoscopy’ method, allowing an axial optical resolution down to the 100-nm range. Compared to the results of conventi ...
... two opposing high numerical aperture lenses to concentrate two coherent opposing laser beams in a joint focus, confocal laser scanning 4Pi microscopy [5–9] has become an established ‘nanoscopy’ method, allowing an axial optical resolution down to the 100-nm range. Compared to the results of conventi ...
THEORY Geometrical optics, or ray optics, describes geometric
... where dimg = S2 is the distance associated with the image and is considered by convention to be negative if on the same side of the lens as the object and positive if on the opposite side of the lens. The focal length f is considered negative for concave lenses. Incoming parallel rays are focused by ...
... where dimg = S2 is the distance associated with the image and is considered by convention to be negative if on the same side of the lens as the object and positive if on the opposite side of the lens. The focal length f is considered negative for concave lenses. Incoming parallel rays are focused by ...
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... Naked-eye detection as a universal approach to lower the limit of detection of enzyme-linked immunoassays ...
... Naked-eye detection as a universal approach to lower the limit of detection of enzyme-linked immunoassays ...
Niyaz_Ahmad_Report
... comprising of sodium niobate crystallites. Electro-optic properties were found to be the functions of crystallite size and poling field. This particular piece of work opened up a new area of research dealing with various aspects of glass-ceramics. Potassium lithium niobate is a promising material fo ...
... comprising of sodium niobate crystallites. Electro-optic properties were found to be the functions of crystallite size and poling field. This particular piece of work opened up a new area of research dealing with various aspects of glass-ceramics. Potassium lithium niobate is a promising material fo ...
parts of microscope
... -Illuminator; Lamp is integral base part, points up toward stage, sources, light or mirror: Many, daylight directed via mirror. Most have controlled light source halogen lamp, function; provides light for image viewing. -Condenser; part of illumination system below stage, lever projects to change ir ...
... -Illuminator; Lamp is integral base part, points up toward stage, sources, light or mirror: Many, daylight directed via mirror. Most have controlled light source halogen lamp, function; provides light for image viewing. -Condenser; part of illumination system below stage, lever projects to change ir ...
File - Electrical Engineering
... The acceptance angle also determines how much light is able to enter the fiber and so we must expect an easy relationship between the nummerical aperture and the cone of acceptance as they are both essentially measurements of the same thing. The formula for the numerical aperture is based on the ref ...
... The acceptance angle also determines how much light is able to enter the fiber and so we must expect an easy relationship between the nummerical aperture and the cone of acceptance as they are both essentially measurements of the same thing. The formula for the numerical aperture is based on the ref ...
Partially Coherent Image Formation Theory for X
... Full-field x-ray microscopes are widely used in many fields of science [1–3]. Advances in nanofabrication tehniques enabled development of short wavelenth focusing elements and significantly improved the spatial resolution [4–9]. In the soft x-ray spectral region, samples as small as a few tens of n ...
... Full-field x-ray microscopes are widely used in many fields of science [1–3]. Advances in nanofabrication tehniques enabled development of short wavelenth focusing elements and significantly improved the spatial resolution [4–9]. In the soft x-ray spectral region, samples as small as a few tens of n ...
Phonon Laser Action in a Tunable Two-Level System
... geometry was interpreted as a phonon amplifier [27]. The conditions there (and typical of Brillouin scattering in the traveling-wave geometry), however, feature stronger spatial damping of the phonons compared to the photons and therefore make clear that optical amplification was observed [26]. Lowe ...
... geometry was interpreted as a phonon amplifier [27]. The conditions there (and typical of Brillouin scattering in the traveling-wave geometry), however, feature stronger spatial damping of the phonons compared to the photons and therefore make clear that optical amplification was observed [26]. Lowe ...
O A RIGINAL RTICLES
... 7.5, 10, 12.5 and 15) thin films thin at normal light incident in the wavelength range 400–2500 nm. The figure depicts that the interference effects disappear in the region of very strong absorption (<650 nm) while the maximum amplitude is observed in the transparent region (>650 nm), where the enve ...
... 7.5, 10, 12.5 and 15) thin films thin at normal light incident in the wavelength range 400–2500 nm. The figure depicts that the interference effects disappear in the region of very strong absorption (<650 nm) while the maximum amplitude is observed in the transparent region (>650 nm), where the enve ...
YOUNG`S INTERFERENCE EXPERIMENT: THE LONG AND
... The traditional view of Thomas Young (1773–1829) is that of an underappreciated genius. He was a child prodigy who could read fluently at the age of two and widely read the classics. By the age of 14 he was acquainted with Latin, Greek, French, Italian, Hebrew, Arabic, and Persian. Because of his ma ...
... The traditional view of Thomas Young (1773–1829) is that of an underappreciated genius. He was a child prodigy who could read fluently at the age of two and widely read the classics. By the age of 14 he was acquainted with Latin, Greek, French, Italian, Hebrew, Arabic, and Persian. Because of his ma ...
Why light
... Why do we have specific receptors for light, rather than some other part of the eletromagnetic spectrum? Why are we sensitive to light, as opposed to gamma rays, or x-rays, or radar waves, or TV waves or wi-fi waves? Two main reasons. (These could be test questions – multiple choice or essay.) 1. T ...
... Why do we have specific receptors for light, rather than some other part of the eletromagnetic spectrum? Why are we sensitive to light, as opposed to gamma rays, or x-rays, or radar waves, or TV waves or wi-fi waves? Two main reasons. (These could be test questions – multiple choice or essay.) 1. T ...
Theoretical and experimental investigation of direct detection optical
... to minimize the penalty due to SSMI. In offset SSB-OFDM (OSSB-OFDM) [12], a sufficient guard band (GB) is allocated between the optical carrier and the OOFDM signal such that the SSMI and desired RF spectra are nonoverlapping. The minimum GB should be equal to the bandwidth of OOFDM signal; therefor ...
... to minimize the penalty due to SSMI. In offset SSB-OFDM (OSSB-OFDM) [12], a sufficient guard band (GB) is allocated between the optical carrier and the OOFDM signal such that the SSMI and desired RF spectra are nonoverlapping. The minimum GB should be equal to the bandwidth of OOFDM signal; therefor ...
Chapter 4 Photonic Sources
... Ideal laser light is single-wavelength only. This is not exactly true for communication lasers. Lasers can be modulated (controlled) very precisely. Lasers can produce relatively high power. Indeed some types of laser can produce kilowatts of power. In communication applications, semiconductor laser ...
... Ideal laser light is single-wavelength only. This is not exactly true for communication lasers. Lasers can be modulated (controlled) very precisely. Lasers can produce relatively high power. Indeed some types of laser can produce kilowatts of power. In communication applications, semiconductor laser ...
ZnO/SiO2 microcavity modulator on silicon Abstract - Paul
... modes with two and three maxima, respectively. Note that the penetration depth into the Si substrate increases with the transverse order. The optical properties of the MCs as well as their operation as a light modulator were investigated by using a low-magnification (2×, NA=0.055) microscope objecti ...
... modes with two and three maxima, respectively. Note that the penetration depth into the Si substrate increases with the transverse order. The optical properties of the MCs as well as their operation as a light modulator were investigated by using a low-magnification (2×, NA=0.055) microscope objecti ...
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... sample of interest. Light scattering by cells and tissues evolved as a dynamic area of study, especially because this type of investigation can potentially offer a noninvasive window into function and pathology [1–9]. Despite all these efforts, light-scattering-based techniques currently have limite ...
... sample of interest. Light scattering by cells and tissues evolved as a dynamic area of study, especially because this type of investigation can potentially offer a noninvasive window into function and pathology [1–9]. Despite all these efforts, light-scattering-based techniques currently have limite ...
Application scenarios for optical OFDM
... quality of the transmission link. The bandwidth and optical components are the same for both transponder types. It has been found that by using reach dependent capacity, a gain in traffic throughput of up to 60% can be obtained depending on the fluctuations in the bandwidth demand. Another interesti ...
... quality of the transmission link. The bandwidth and optical components are the same for both transponder types. It has been found that by using reach dependent capacity, a gain in traffic throughput of up to 60% can be obtained depending on the fluctuations in the bandwidth demand. Another interesti ...
View
... • Production of a magnified image of the lamp filament that is focused at the level of the aperture plane of the condensor. • Opening or closing this diaphragm controls the angle of the light cone that reaches the specimen, which is determining the image resolution along with the numerical aperture ...
... • Production of a magnified image of the lamp filament that is focused at the level of the aperture plane of the condensor. • Opening or closing this diaphragm controls the angle of the light cone that reaches the specimen, which is determining the image resolution along with the numerical aperture ...
Optical coherence tomography
Optical coherence tomography (OCT) is an established medical imaging technique that uses light to capture micrometer-resolution, three-dimensional images from within optical scattering media (e.g., biological tissue). Optical coherence tomography is based on low-coherence interferometry, typically employing near-infrared light. The use of relatively long wavelength light allows it to penetrate into the scattering medium. Confocal microscopy, another optical technique, typically penetrates less deeply into the sample but with higher resolution.Depending on the properties of the light source (superluminescent diodes, ultrashort pulsed lasers, and supercontinuum lasers have been employed), optical coherence tomography has achieved sub- micrometer resolution (with very wide-spectrum sources emitting over a ~100 nm wavelength range).Optical coherence tomography is one of a class of optical tomographic techniques. A relatively recent implementation of optical coherence tomography, frequency-domain optical coherence tomography, provides advantages in signal-to-noise ratio, permitting faster signal acquisition. Commercially available optical coherence tomography systems are employed in diverse applications, including art conservation and diagnostic medicine, notably in ophthalmology and optometry where it can be used to obtain detailed images from within the retina. Recently it has also begun to be used in interventional cardiology to help diagnose coronary artery disease. It has also shown promise in dermatology to improve the diagnostic process.