Document
... wavelength dependence of the source spectra radiance, the optical efficiency of the mirrors and grating, and the detector instability, which are serious in the IR region.single-beam instruments not practical. ...
... wavelength dependence of the source spectra radiance, the optical efficiency of the mirrors and grating, and the detector instability, which are serious in the IR region.single-beam instruments not practical. ...
a PDF of the paper on this project published in the OCEANS 2005
... that are perpendicular to optical axis of the illuminating beam, plane of conventional, 2D imaging techniques. Digital but are substantially less accurate in the beam direction due to holographic cinematography can follow the same subject as it the so-called depth of focus effect [8, 18]. In order t ...
... that are perpendicular to optical axis of the illuminating beam, plane of conventional, 2D imaging techniques. Digital but are substantially less accurate in the beam direction due to holographic cinematography can follow the same subject as it the so-called depth of focus effect [8, 18]. In order t ...
PPT
... Suppose we spent 6000 seconds acquiring the spectrum and we really don’t need the enhanced S/N: We can get the same S/N as with a dispersive system in 1/(n)1/2 of the time ...
... Suppose we spent 6000 seconds acquiring the spectrum and we really don’t need the enhanced S/N: We can get the same S/N as with a dispersive system in 1/(n)1/2 of the time ...
Writing a superlattice with light forces
... In 1992 atom lithography was first demonstrated at AT & T Bell Laboratories [1]. At the National Institute of Standards and Technology [2] and in our group [3], lines with the technologically interesting material chromium have been written with a period of λ/2 = 213 nm, where λ is the laser waveleng ...
... In 1992 atom lithography was first demonstrated at AT & T Bell Laboratories [1]. At the National Institute of Standards and Technology [2] and in our group [3], lines with the technologically interesting material chromium have been written with a period of λ/2 = 213 nm, where λ is the laser waveleng ...
Using Transmission Electron Microscopy (TEM) for Chemical
... macromolecules. An effective resolution of approximately 2nm is achievable as limited by the specimen preparation and radiation damage. Although the STEM cannot provide primary or secondary structure of proteins (a goal still within reach of high-resolution CTEM) it provides valuable information abo ...
... macromolecules. An effective resolution of approximately 2nm is achievable as limited by the specimen preparation and radiation damage. Although the STEM cannot provide primary or secondary structure of proteins (a goal still within reach of high-resolution CTEM) it provides valuable information abo ...
Leaving Cert Physics Notes by Mary Singleton
... around corners. The light always hits the inside of the fibre at greater than the critical angle so total internal reflection occurs and the light travels along the fibre. Losses can occur if (i) the fibre is bent at too steep an angle – the light may not then hit at greater than the critical angle ...
... around corners. The light always hits the inside of the fibre at greater than the critical angle so total internal reflection occurs and the light travels along the fibre. Losses can occur if (i) the fibre is bent at too steep an angle – the light may not then hit at greater than the critical angle ...
Extreme Sensitivity in Photoacoustics by Using Optical Cantilever
... measurement time). The modulating frequency ω/(2π) accomplished by using a mechanical chopper was 118 Hz. The whole measurement system was filled with a mixture of N2 and CH4 , where the concentration of CH4 was 10±2 ppm and the total pressure was 0.6 atm. Curve A shows the amplitude of the cantilev ...
... measurement time). The modulating frequency ω/(2π) accomplished by using a mechanical chopper was 118 Hz. The whole measurement system was filled with a mixture of N2 and CH4 , where the concentration of CH4 was 10±2 ppm and the total pressure was 0.6 atm. Curve A shows the amplitude of the cantilev ...
In-fiber microchannel device filled with a carbon
... 5. A. Martinez, S. Uchida, Y-W Song, T. Ishigure, and S. Yamashita, “Fabrication of Carbon Nanotube–Polymethyl-methacrylate Composites for Nonlinear Photonic Devices,” Opt. Express 16, 11337-11343 (2008). 6. Y-W Song, S. Yamashita, C. S. Goh, and S. Y. Set, "Carbon nanotube mode lockers with enhance ...
... 5. A. Martinez, S. Uchida, Y-W Song, T. Ishigure, and S. Yamashita, “Fabrication of Carbon Nanotube–Polymethyl-methacrylate Composites for Nonlinear Photonic Devices,” Opt. Express 16, 11337-11343 (2008). 6. Y-W Song, S. Yamashita, C. S. Goh, and S. Y. Set, "Carbon nanotube mode lockers with enhance ...
Dispersion measurements with white-light interferometry
... a light bulb. However, white light does still remain coherent over a temporal delay of the order of femtoseconds, with the shortness being due to ultrafast Gaussian statistical temporal fluctuations. Only recently have laser systems also been able to generate optical pulses with a similarly short co ...
... a light bulb. However, white light does still remain coherent over a temporal delay of the order of femtoseconds, with the shortness being due to ultrafast Gaussian statistical temporal fluctuations. Only recently have laser systems also been able to generate optical pulses with a similarly short co ...
coefficient extinction molar riboflavin
... A colored absorber has an absorptivity that is dependent on wavelength of the light ε(λ). The absorptivity is the fundamental property of a substance. This is the property that contains the observable spectroscopic information that can be linked to quantum mechanics (also see absorption cross sectio ...
... A colored absorber has an absorptivity that is dependent on wavelength of the light ε(λ). The absorptivity is the fundamental property of a substance. This is the property that contains the observable spectroscopic information that can be linked to quantum mechanics (also see absorption cross sectio ...
Y.H. Kim, G. Voulgaris, and M.A. Goni, 2005, Estimation of
... Estuaries are dynamic environments that play an important role in the cycling of particulate organic carbon (POC). Tidal and residual flows, as the latter might be influenced by bathymetry, freshwater discharge and/or atmospheric forcing determine the net flux and transport of POC. Traditional wet-c ...
... Estuaries are dynamic environments that play an important role in the cycling of particulate organic carbon (POC). Tidal and residual flows, as the latter might be influenced by bathymetry, freshwater discharge and/or atmospheric forcing determine the net flux and transport of POC. Traditional wet-c ...
Mach Zehnder Interferometer and its Applications
... output ports. A basic MZI [1] as shown in Fig.1 is constructed using two couplers, one at the input acts as splitter and another at the output acts as combiner. The light is split in two arms of the interferometer by the input coupler and recombined at the output by the output coupler. The optical p ...
... output ports. A basic MZI [1] as shown in Fig.1 is constructed using two couplers, one at the input acts as splitter and another at the output acts as combiner. The light is split in two arms of the interferometer by the input coupler and recombined at the output by the output coupler. The optical p ...
Bimodal optical computers
... These problems are of great interest in their own right. In addition such systems with high dimensions arise when linear partial differential equations are solved by the finite difference method. Many other problems can be recast in this form. Suppose further that we have built a discrete optical an ...
... These problems are of great interest in their own right. In addition such systems with high dimensions arise when linear partial differential equations are solved by the finite difference method. Many other problems can be recast in this form. Suppose further that we have built a discrete optical an ...
Optimization of multilayer reflectors for extreme ultraviolet lithography
... Abstract. Multilayer interference coatings on reflective elements in extreme ultraviolet (EUV) projection lithography systems introduce phase and amplitude variations at reflection, which have important implications for imaging properties, e.g., resolution, depth of focus, and tolerances. We discuss ...
... Abstract. Multilayer interference coatings on reflective elements in extreme ultraviolet (EUV) projection lithography systems introduce phase and amplitude variations at reflection, which have important implications for imaging properties, e.g., resolution, depth of focus, and tolerances. We discuss ...
measuring
... The cones are responsible for light-adapted vision; they respond to color and have high resolution in the central foveal region The light-adapted relative spectral response of the eye is called the spectral luminous efficiency function for photopic vision, V(λ) This empirical curve, first adopted by ...
... The cones are responsible for light-adapted vision; they respond to color and have high resolution in the central foveal region The light-adapted relative spectral response of the eye is called the spectral luminous efficiency function for photopic vision, V(λ) This empirical curve, first adopted by ...
Slide 1
... Specify an optical receiver with a tightly controlled modulation response that is filtered at ¾ of the bit rate Question What is the basic requirement for the measuring equipment to produce an overlay of data transitions? The figure shows an example of an eye-diagram measurement using a standardized ...
... Specify an optical receiver with a tightly controlled modulation response that is filtered at ¾ of the bit rate Question What is the basic requirement for the measuring equipment to produce an overlay of data transitions? The figure shows an example of an eye-diagram measurement using a standardized ...
Graphene-like optical light field and its interaction with two
... widened to a spot size w ≈ 2 mm and collimated, onto a phaseonly Spatial Light Modulator (Hamamatsu Liquid crystal on silicon) of size ≈16 mm×12 mm with 800×600 pixels, then through a Fourier lens (f = 0.5 m), through an aperture in the Fourier lens’s back focal plane that selected only the +1st dif ...
... widened to a spot size w ≈ 2 mm and collimated, onto a phaseonly Spatial Light Modulator (Hamamatsu Liquid crystal on silicon) of size ≈16 mm×12 mm with 800×600 pixels, then through a Fourier lens (f = 0.5 m), through an aperture in the Fourier lens’s back focal plane that selected only the +1st dif ...
Optical simulation to enhance PV module encapsulation
... ABSTRACT: This paper presents a simulation tool to examine the optical transmission of any encapsulation of PV modules under real-word conditions in order to compare various types of encapsulation materials and front covers, with and without anti-reflective-coatings. While standard test conditions a ...
... ABSTRACT: This paper presents a simulation tool to examine the optical transmission of any encapsulation of PV modules under real-word conditions in order to compare various types of encapsulation materials and front covers, with and without anti-reflective-coatings. While standard test conditions a ...
Three-dimensional digitization of highly reflective and transparent
... The system proposed by Matusik et al. [20] consists of a set of cameras and light sources (a monitor projecting color patterns). The objects are placed on a turntable. With this system, an object is digitized and modeled using the captured reflectance fields. Yamazaki et al. [24] propose a method to ...
... The system proposed by Matusik et al. [20] consists of a set of cameras and light sources (a monitor projecting color patterns). The objects are placed on a turntable. With this system, an object is digitized and modeled using the captured reflectance fields. Yamazaki et al. [24] propose a method to ...
- Europhysics News
... holography, called LEEPS, that not only performs the numerical reconstruction but also all other procedures connected with data management and visualization [7]. In holography, the term 'reconstruction' is used to obtain the function K(r) from the hologram. The plot of IK(r) I on a twodimensional pl ...
... holography, called LEEPS, that not only performs the numerical reconstruction but also all other procedures connected with data management and visualization [7]. In holography, the term 'reconstruction' is used to obtain the function K(r) from the hologram. The plot of IK(r) I on a twodimensional pl ...
Gigahertz frequency comb offset stabilization
... using standard deposition and lithography methods. Simple dispersion engineering by adjusting the geometrical dimensions of the waveguide allows for designing dispersion profiles with more than one zero-dispersion-wavelengths (ZDW’s) to achieve highly coherent ...
... using standard deposition and lithography methods. Simple dispersion engineering by adjusting the geometrical dimensions of the waveguide allows for designing dispersion profiles with more than one zero-dispersion-wavelengths (ZDW’s) to achieve highly coherent ...
Novel ophthalmic imaging
... We report our experience using the Google Glass to record scleral buckling surgery. Methods: We recorded and subsequently reviewed both still images and videos of 3 primary scleral buckling surgeries. We qualitatively assessed the ability of the recorded material to document key steps in the scleral ...
... We report our experience using the Google Glass to record scleral buckling surgery. Methods: We recorded and subsequently reviewed both still images and videos of 3 primary scleral buckling surgeries. We qualitatively assessed the ability of the recorded material to document key steps in the scleral ...
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.