
Skowrons Waugh Choose Ohio First poster
... Radiance: radiant power per solid angle per projected area of a light source Photon Flux: the number of photons per second per unit area Luminous Flux: radiant power with respect to the sensitivity of the human eye to light Luminous Intensity: luminous flux per solid angle Luminance: luminous inte ...
... Radiance: radiant power per solid angle per projected area of a light source Photon Flux: the number of photons per second per unit area Luminous Flux: radiant power with respect to the sensitivity of the human eye to light Luminous Intensity: luminous flux per solid angle Luminance: luminous inte ...
True-False Questions
... ago, the characteristics of light were defined by the way it behaved under a variety of conditions (geometric optics). The premise was that light consists of rays that move outward from their source in straight lines as long as they are traveling in a consistent medium (air, water, space, or glass, ...
... ago, the characteristics of light were defined by the way it behaved under a variety of conditions (geometric optics). The premise was that light consists of rays that move outward from their source in straight lines as long as they are traveling in a consistent medium (air, water, space, or glass, ...
45.Z-scan measurement of the nonlinear refractive index of graphene
... ΔΦ saturates. In this high intensity regime, the exact modeling of the nonlinear response requires us to take into account χ 3 and higher order odd terms, such as χ 5 ; …. However, from the experimental data, an effective nonlinear index can be defined by n2 I ΔΦ∕k0 LI:. One sees that n2 ...
... ΔΦ saturates. In this high intensity regime, the exact modeling of the nonlinear response requires us to take into account χ 3 and higher order odd terms, such as χ 5 ; …. However, from the experimental data, an effective nonlinear index can be defined by n2 I ΔΦ∕k0 LI:. One sees that n2 ...
Enpolarization and depolarization of light
... 4. A. Pierangelo, A. Benali, M.-R. Antonelli, T. Novikova, P. Validire, B. Gayet, and A. De Martino, “Ex-vivo characterization of human colon cancer by mueller polarimetric imaging,” Opt. Express 19, 1582–1593 (2011). 5. E. Wolf, Introduction to the Theory of Coherence and Polarization of Light (Cam ...
... 4. A. Pierangelo, A. Benali, M.-R. Antonelli, T. Novikova, P. Validire, B. Gayet, and A. De Martino, “Ex-vivo characterization of human colon cancer by mueller polarimetric imaging,” Opt. Express 19, 1582–1593 (2011). 5. E. Wolf, Introduction to the Theory of Coherence and Polarization of Light (Cam ...
Tutorial on Optomechanical Beam Steering Mechanisms
... polarized light if the tilt is out of the plane of incidence then the surfaces will have to have high transmission for both polarization states. This is difficult to achieve for angles ~>45 degrees. High angles also either require use of oversize pieces or acceptance of significant foreshortening of ...
... polarized light if the tilt is out of the plane of incidence then the surfaces will have to have high transmission for both polarization states. This is difficult to achieve for angles ~>45 degrees. High angles also either require use of oversize pieces or acceptance of significant foreshortening of ...
Nonlinear optical properties of nanocomposite materials
... A common approach to the development of nonlinear optical materials entails searching for materials that possess, at the molecular level, desirable nonlinear optical properties. An alternative approach, which will be explored in this paper, entails combining known materials into a composite material ...
... A common approach to the development of nonlinear optical materials entails searching for materials that possess, at the molecular level, desirable nonlinear optical properties. An alternative approach, which will be explored in this paper, entails combining known materials into a composite material ...
Mirrors - Purdue Physics
... § Now let us suppose that we have many horizontal light rays incident on this spherical mirror as shown § Each light ray obeys the law of reflection at each point § You can see that the rays diverge and do not seem to form any kind of image § However, if we extrapolate the reflected rays through the ...
... § Now let us suppose that we have many horizontal light rays incident on this spherical mirror as shown § Each light ray obeys the law of reflection at each point § You can see that the rays diverge and do not seem to form any kind of image § However, if we extrapolate the reflected rays through the ...
Modeling Light Scattering in Tissue as Continuous Random Media
... models of tissue scattering approximate tissue as a collection of randomly placed spheres or spheroids [11]–[13]. This is plausible considering that organelles such as nuclei, mitochondria, lysosomes, vacuoles, and even whole cells are approximately spherical (or spheroidal) in shape. The scattering ...
... models of tissue scattering approximate tissue as a collection of randomly placed spheres or spheroids [11]–[13]. This is plausible considering that organelles such as nuclei, mitochondria, lysosomes, vacuoles, and even whole cells are approximately spherical (or spheroidal) in shape. The scattering ...
Advantages of Anterior Segment Optical Coherence Tomography
... green/yellowish brown deposits at the level of DM. In 6 of 7 patients, the KF ring was seen as greenish/yellowish deposits, whereas in 1 patient, patient 6, it was seen as yellowish brown deposits. The KF ring was thin in 2 patients (Fig. 1A) and was thick in the rest of the 5 patients (Fig. 1B). Th ...
... green/yellowish brown deposits at the level of DM. In 6 of 7 patients, the KF ring was seen as greenish/yellowish deposits, whereas in 1 patient, patient 6, it was seen as yellowish brown deposits. The KF ring was thin in 2 patients (Fig. 1A) and was thick in the rest of the 5 patients (Fig. 1B). Th ...
\ A/58
... thus include materials such as silicon nitride, silicon oxide, Zinc sul?de-silicon dioxide, titanium oxide or carbide. The compact disc is shone With a laser light beam 26 from a light source 24. The laser light beam 26 transmits through the transparent substrate 12 to reach the recording layer 18, ...
... thus include materials such as silicon nitride, silicon oxide, Zinc sul?de-silicon dioxide, titanium oxide or carbide. The compact disc is shone With a laser light beam 26 from a light source 24. The laser light beam 26 transmits through the transparent substrate 12 to reach the recording layer 18, ...
After referees Review article final_FINAL3
... wavelength, often requiring long pathlengths, and excessive scan times to obtain reasonable signal to noise ratios. Despite this, Coates was able to publish an infrared spectrum of a 25µm thick section of rat brain tissue over a narrow spectral range (7-11µm). During the following two decades limite ...
... wavelength, often requiring long pathlengths, and excessive scan times to obtain reasonable signal to noise ratios. Despite this, Coates was able to publish an infrared spectrum of a 25µm thick section of rat brain tissue over a narrow spectral range (7-11µm). During the following two decades limite ...
The Onset of Matter-Wave Amplification in a Superradiant Bose
... momentum បk is scattered off a condensate atom (zero momentum), thereby producing a scattered photon with momentum ប(k ⫺ q) and a recoiling atom with momentum បq, q ⫽ 公2 k. In contrast, backward peaks [label (2)] are produced when a previously scattered photon is scattered back into the pump mode, t ...
... momentum បk is scattered off a condensate atom (zero momentum), thereby producing a scattered photon with momentum ប(k ⫺ q) and a recoiling atom with momentum បq, q ⫽ 公2 k. In contrast, backward peaks [label (2)] are produced when a previously scattered photon is scattered back into the pump mode, t ...
Feedback-induced catastrophic optical mirror damage
... Today broad area semiconductor lasers (BALs) have found a wide range of industrial, medical, scientific, space and military applications including the pumping of solid-state, disk and fiber lasers [1]. These high-power diode lasers are the most efficient narrow-band light sources and convert up to 7 ...
... Today broad area semiconductor lasers (BALs) have found a wide range of industrial, medical, scientific, space and military applications including the pumping of solid-state, disk and fiber lasers [1]. These high-power diode lasers are the most efficient narrow-band light sources and convert up to 7 ...
... silver superlens system, taking into consideration the absorption in silver and in the adjacent media (Fig. 3). From Fig. 3A, we estimate that a range of evanescent components from 2 to 4 k0 can be efficiently enhanced and recovered by surface plasmon excitations, which is much broader than the conv ...
Laser Tweezers
... their membranes are cut open, fused into a single hybrid cell. In addition, arrays of tweezers can be used to create complex three-dimensional structures out of molecules that can then be frozen into place. This technique is currently being developed and may lead to the ability to mass-produce micro ...
... their membranes are cut open, fused into a single hybrid cell. In addition, arrays of tweezers can be used to create complex three-dimensional structures out of molecules that can then be frozen into place. This technique is currently being developed and may lead to the ability to mass-produce micro ...
Lecture 16 - University of St Andrews
... • Stripped optical fibre is place in ceramic capillary. • Fibre is then glued into place. • Fibre tip is polished back to the top of the ferrule. ...
... • Stripped optical fibre is place in ceramic capillary. • Fibre is then glued into place. • Fibre tip is polished back to the top of the ferrule. ...
Investigation of Physical Properties in II-VI
... Abstract: This work explains recent advances in II–VI Ternary Semiconductor Alloys. Current work has significant potential for low-cost, scalable solar cells. The close interplay among the properties of the materials and their utility in solar cells is also briefly discussed. Almost group II–VI mate ...
... Abstract: This work explains recent advances in II–VI Ternary Semiconductor Alloys. Current work has significant potential for low-cost, scalable solar cells. The close interplay among the properties of the materials and their utility in solar cells is also briefly discussed. Almost group II–VI mate ...
External Reflection from Omnidirectional Dielectric Mirror Fibers
... 20. The starting point for the fluid Xe simulations was a tetragonal slab of solid, fcc Xe with a lattice parameter 1.5 times that of Al confined between two walls, 8.06 nm apart, each consisting, in the first instance, of three {111} Al planes. The dimensions of the cell were 8.06 nm, 6.86 nm, and ...
... 20. The starting point for the fluid Xe simulations was a tetragonal slab of solid, fcc Xe with a lattice parameter 1.5 times that of Al confined between two walls, 8.06 nm apart, each consisting, in the first instance, of three {111} Al planes. The dimensions of the cell were 8.06 nm, 6.86 nm, and ...
Study on high signal-to-noise ratio (SNR) silicon p
... SNR can be over 104 within the wavelength range of 500–600 nm and the peak of spectral responsivity is 0.48 A/W at about 520 nm. 3.1. Optimizing the p-n junction depth xj The 1/α is penetration depth of light wavelength λ, where α is photoabsorption coefficient. For the devices whose junction depth ...
... SNR can be over 104 within the wavelength range of 500–600 nm and the peak of spectral responsivity is 0.48 A/W at about 520 nm. 3.1. Optimizing the p-n junction depth xj The 1/α is penetration depth of light wavelength λ, where α is photoabsorption coefficient. For the devices whose junction depth ...
Astro-Madness: Student Table Keys
... (45 arc-minutes, bigger than the angular size of the moon) Wavelength range of 1 to 2.5 micrometers; infrared Medium to very high spectral resolution depending upon which grating is used (7 available). Two observing modes to obtain low resolution spectra or polarized light (polarimetry). Focal reduc ...
... (45 arc-minutes, bigger than the angular size of the moon) Wavelength range of 1 to 2.5 micrometers; infrared Medium to very high spectral resolution depending upon which grating is used (7 available). Two observing modes to obtain low resolution spectra or polarized light (polarimetry). Focal reduc ...
Harnessing and control of optical rogue waves in supercontinuum
... In both cases, however, the initial evolution is similar, with the growth of characteristic MI sidebands about the pump, and the development of a corresponding temporal modulation on the pulse envelope. Nonetheless, differences in the way in which the MI is seeded from the initial random noise leads ...
... In both cases, however, the initial evolution is similar, with the growth of characteristic MI sidebands about the pump, and the development of a corresponding temporal modulation on the pulse envelope. Nonetheless, differences in the way in which the MI is seeded from the initial random noise leads ...
Final Report DURIP AFOSR Grant FA9550-06-1
... capabilities for efficient laser initiation and radiofrequency sustainment of plasmas and diagnostics in air, as well as near microwave windows and on cathode surfaces as part of the MURI on Nano-physics of Electron Emission and Breakdown for High Power Microwaves. Our current research on AFOSR Gran ...
... capabilities for efficient laser initiation and radiofrequency sustainment of plasmas and diagnostics in air, as well as near microwave windows and on cathode surfaces as part of the MURI on Nano-physics of Electron Emission and Breakdown for High Power Microwaves. Our current research on AFOSR Gran ...
fourier transform infra-red (ftir) spectroscopy
... The subtraction of a spectrum from another spectrum is known as a "Spectral Subtraction". Normally, spectral subtraction is used to subtract the spectrum of a known component from a spectrum with mixed components, and allow for calculation of the spectrum of the other component. For example, when sp ...
... The subtraction of a spectrum from another spectrum is known as a "Spectral Subtraction". Normally, spectral subtraction is used to subtract the spectrum of a known component from a spectrum with mixed components, and allow for calculation of the spectrum of the other component. For example, when sp ...
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.