Sum frequency generation spectroscopy (SFG)
... SFG has advantages in its ability to be monolayer surface sensitive, ability to be performed in situ (for example aqueous surfaces and in gases), and not causing much damage to the sample surface. SFG is comparable to second harmonic generation (SFG is a more general form) and Infrared and Raman ...
... SFG has advantages in its ability to be monolayer surface sensitive, ability to be performed in situ (for example aqueous surfaces and in gases), and not causing much damage to the sample surface. SFG is comparable to second harmonic generation (SFG is a more general form) and Infrared and Raman ...
Mark scheme for Topic 11 - Cambridge Resources for the IB Diploma
... The angle must be the Brewster angle for which the reflected light is completely horizontally polarized, and so cannot be transmitted through the vertical polarizer. ...
... The angle must be the Brewster angle for which the reflected light is completely horizontally polarized, and so cannot be transmitted through the vertical polarizer. ...
Structure of Optical Vortices
... traps, in this case a single optical vortex. The same lens also forms images of trapped particles that are relayed to an attached video camera through a dichroic mirror. The SLM can shift the light’s phase to any of 150 distinct levels in the range 0 ≤ ϕ ≤ 2π radians at each 40 µm wide pixel in a 48 ...
... traps, in this case a single optical vortex. The same lens also forms images of trapped particles that are relayed to an attached video camera through a dichroic mirror. The SLM can shift the light’s phase to any of 150 distinct levels in the range 0 ≤ ϕ ≤ 2π radians at each 40 µm wide pixel in a 48 ...
Pixel level optical-transfer-function design based on the surface
... past years, SP wave has generated considerable interest thanks to its intrinsic field localization and ability for manipulation of light on the subwavelength scale [15]. Recently, some theoretical and experimental results [10,16–21] also show that a surface scattered component with free space wave ...
... past years, SP wave has generated considerable interest thanks to its intrinsic field localization and ability for manipulation of light on the subwavelength scale [15]. Recently, some theoretical and experimental results [10,16–21] also show that a surface scattered component with free space wave ...
14_04_2014 - IB Phys..
... photodiode, the current is zero • When light of a specific wavelength falls on the photodiode, a current flows. The magnitude of the current is proportional to the intensity of light ...
... photodiode, the current is zero • When light of a specific wavelength falls on the photodiode, a current flows. The magnitude of the current is proportional to the intensity of light ...
Ocean Optical Properties - The Oceanography Society
... time was controlled by the measured time intervals between the release of two messengers, one for opening and one for closing the shutter. Careful calibration allowed investigators to obtain some of the first quantitative estimates of diffuse attenuation from these measurements. Another early and no ...
... time was controlled by the measured time intervals between the release of two messengers, one for opening and one for closing the shutter. Careful calibration allowed investigators to obtain some of the first quantitative estimates of diffuse attenuation from these measurements. Another early and no ...
Microsoft Word - DORAS
... architecture, some type of optical filtering may normally be employed in the such systems either to convert a Double Side Band (DSB) signal to Single Side Band format (to overcome dispersive fading), or to filter out one optical data channel if wavelength division multiplexing (WDM) technology is em ...
... architecture, some type of optical filtering may normally be employed in the such systems either to convert a Double Side Band (DSB) signal to Single Side Band format (to overcome dispersive fading), or to filter out one optical data channel if wavelength division multiplexing (WDM) technology is em ...
FIB – an easy tool for fabrication of high quality plasmonic structures
... and FIB milling in distinct layers were used for step by step fabrication of complex plasmonic structures. The parameters of electron exposition or FIB milling are displayed in the DrawBeam process panel. ...
... and FIB milling in distinct layers were used for step by step fabrication of complex plasmonic structures. The parameters of electron exposition or FIB milling are displayed in the DrawBeam process panel. ...
Modeling, Simulation and Application of the Probe Beam Deflection
... • PBDT is implemented by focusing probe beams through an enclosure filled with a propagation medium. As an acoustic wave travels through the medium the refractive index is changed relative to the pressure gradient produced by the wave. The probe beam deflects and refracts as it interacts with the re ...
... • PBDT is implemented by focusing probe beams through an enclosure filled with a propagation medium. As an acoustic wave travels through the medium the refractive index is changed relative to the pressure gradient produced by the wave. The probe beam deflects and refracts as it interacts with the re ...
Surface-plasmon-polariton-induced suppressed
... transmit even more light because less material is blocking the light. Surprisingly, however, by means of analytical and numerical calculations [1], it was recently predicted that the transmission can nevertheless be totally suppressed. This nontrivial phenomenon is the complete opposite of the widel ...
... transmit even more light because less material is blocking the light. Surprisingly, however, by means of analytical and numerical calculations [1], it was recently predicted that the transmission can nevertheless be totally suppressed. This nontrivial phenomenon is the complete opposite of the widel ...
Laser Distance and Speed Detection
... History of Laser Ranging 1840’s, First remote sensing used with pigeons ? 1969, the first lunar laser ranging done by using reflectors placed on the moon by Apollo ...
... History of Laser Ranging 1840’s, First remote sensing used with pigeons ? 1969, the first lunar laser ranging done by using reflectors placed on the moon by Apollo ...
Polarization
... – Stress Analysis : The optical activity of plastic and glass depends on the stress in them. When the stress is greatest, the rotation of the vibration is greatest. Dark and colour bands are produced when polarized light is shone through the material. Engineers build plastic models of structures to ...
... – Stress Analysis : The optical activity of plastic and glass depends on the stress in them. When the stress is greatest, the rotation of the vibration is greatest. Dark and colour bands are produced when polarized light is shone through the material. Engineers build plastic models of structures to ...
setting up of a total internal reflection fluorescent microscope
... tool with high signal-to-noise ratio while at the same time eliminating maximum background noise [1]. TIRF utilizes the evanescent field created when a beam of light strikes an interface between two media to excite fluorescent dyes in the specimen. The phenomenon of total internal reflection occurs ...
... tool with high signal-to-noise ratio while at the same time eliminating maximum background noise [1]. TIRF utilizes the evanescent field created when a beam of light strikes an interface between two media to excite fluorescent dyes in the specimen. The phenomenon of total internal reflection occurs ...
In the diagram below, the optical train of a set of binoculars is found
... circular aperture by dividing up the aperture plane into circular zones of radius Rn, such that the total pathlength rn rn' differed by one half wavelength from the pathlength ( rn 1 rn' 1 ) associated with the next zone. The geometry is shown in the diagram below. ...
... circular aperture by dividing up the aperture plane into circular zones of radius Rn, such that the total pathlength rn rn' differed by one half wavelength from the pathlength ( rn 1 rn' 1 ) associated with the next zone. The geometry is shown in the diagram below. ...
Nano-optomechanical Actuator and Pull-Back Instability
... low cost. However, the microscale dimensions limit both the speed and precision of actuation. Nanoelectromechanical systems (NEMS) scale down the dimensions.7,8 In particular, NEMS employing electrostatic forces have been developed.9,10 For parallel-plate electrostatic actuators, the pull-in instabi ...
... low cost. However, the microscale dimensions limit both the speed and precision of actuation. Nanoelectromechanical systems (NEMS) scale down the dimensions.7,8 In particular, NEMS employing electrostatic forces have been developed.9,10 For parallel-plate electrostatic actuators, the pull-in instabi ...
Spherical Aberration. q ℓ
... This extra positive term causes the ray in the lens to bend down passing before the focus, This is called a longitudinal spherical aberration. ...
... This extra positive term causes the ray in the lens to bend down passing before the focus, This is called a longitudinal spherical aberration. ...
Airway Luminal Diameter and Shape Measurement by Means of an
... Tracheal measurement model identical to that illustrated in Figure 3 except using greater distance (y2). A, White light passed from a tungsten-halogen source is collimated and directed at a diffraction grating to form a spectrum on the luminal surface of the divided trachea. The optical axis, illust ...
... Tracheal measurement model identical to that illustrated in Figure 3 except using greater distance (y2). A, White light passed from a tungsten-halogen source is collimated and directed at a diffraction grating to form a spectrum on the luminal surface of the divided trachea. The optical axis, illust ...
Displacement Measuring Interferometry
... 4.9 Summary: Using Displacement Interferometry............................................................. 221 References......................................................................................................................................222 ...
... 4.9 Summary: Using Displacement Interferometry............................................................. 221 References......................................................................................................................................222 ...
- Ingineeri.com
... Nerve fiber layer thickness can be evaluated with the "Fast RNFL Thickness" scan. This is a circular scan that requires the operator to place the circle so that the center of the circle is centered on the optic nerve head. ...
... Nerve fiber layer thickness can be evaluated with the "Fast RNFL Thickness" scan. This is a circular scan that requires the operator to place the circle so that the center of the circle is centered on the optic nerve head. ...
Optical Fibers in Communication
... REPEATERS AND REGENERATORS:Optical repeaters are purely optical devices that are used simply to combat attenuation in the fiber; typically spans of 80km upwards are now possible. The recent introduction of soliton transmission methods has increased the allowed distance between repeaters and systems ...
... REPEATERS AND REGENERATORS:Optical repeaters are purely optical devices that are used simply to combat attenuation in the fiber; typically spans of 80km upwards are now possible. The recent introduction of soliton transmission methods has increased the allowed distance between repeaters and systems ...
Optimization of axial resolution in a confocal microscope with
... with D-shaped apertures exhibits a poorer axial resolution than in the conventional confocal microscope with circular apertures, the behavior is different with a finite-sized detector. It is of practical significance that for a given finite-sized detector there is an optimum configuration (value of ...
... with D-shaped apertures exhibits a poorer axial resolution than in the conventional confocal microscope with circular apertures, the behavior is different with a finite-sized detector. It is of practical significance that for a given finite-sized detector there is an optimum configuration (value of ...
Mimicking celestial mechanics in metamaterials ARTICLES *
... the microscopic response of an artificial optical material has attracted great interest in the field of optics. This ongoing revolution, facilitated by the advances in nanotechnology, has enabled the manifestation of exciting effects such as negative refraction1,2 , electromagnetic invisibility devi ...
... the microscopic response of an artificial optical material has attracted great interest in the field of optics. This ongoing revolution, facilitated by the advances in nanotechnology, has enabled the manifestation of exciting effects such as negative refraction1,2 , electromagnetic invisibility devi ...
Reflection of Light
... •Appears closer to the plane than the object •Appears further to the plane than the object •Appears to be on the opposite side of the plane than the object ...
... •Appears closer to the plane than the object •Appears further to the plane than the object •Appears to be on the opposite side of the plane than the object ...
Isolated hexaphenyl nanofibers as optical waveguides
... waveguiding properties require an analytical theory for optical waveguiding in nanometer-scaled aggregates. Motivated by the force microscopy images, we assume the nanofiber to have a rectangular cross section and to be an optically uniaxial medium with the dielectric tensor component ⑀ 储 along the ...
... waveguiding properties require an analytical theory for optical waveguiding in nanometer-scaled aggregates. Motivated by the force microscopy images, we assume the nanofiber to have a rectangular cross section and to be an optically uniaxial medium with the dielectric tensor component ⑀ 储 along the ...
Demonstration of Optical Rotatory Dispersion of Sucrose
... in intervals of 1.0 cm. The intensity of the scattered beam was recorded as a function of distance. It is also possible to keep the detector fixed and to use a light pipe in which one end can be moved down the tube while the other end is attached to the monochromator. No measurements were taken near ...
... in intervals of 1.0 cm. The intensity of the scattered beam was recorded as a function of distance. It is also possible to keep the detector fixed and to use a light pipe in which one end can be moved down the tube while the other end is attached to the monochromator. No measurements were taken near ...
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.