LEVEL –A QESTIONS-OPTICS 1. Draw a ray diagram to show the
... Why dose sky appear blue? What should be the position of an object relative to a convex lens so that it behaves like a magnifying lens? For which colour in visible region, the refractive index of glass is maximum? Define refractive index of a medium in terms of wavelength of light. State the factors ...
... Why dose sky appear blue? What should be the position of an object relative to a convex lens so that it behaves like a magnifying lens? For which colour in visible region, the refractive index of glass is maximum? Define refractive index of a medium in terms of wavelength of light. State the factors ...
Acousto-Optic Modulators
... transducer has a length (L) of 10 mm and a height (H) of 5 mm. Consider modulating a red-laser beam from a He-Ne laser, l = 632.8 nm. Calculate the acoustic wavelength and hence the Bragg deflection angle. What is the Doppler shift in the wavelength? What is the relative intensity in the first order ...
... transducer has a length (L) of 10 mm and a height (H) of 5 mm. Consider modulating a red-laser beam from a He-Ne laser, l = 632.8 nm. Calculate the acoustic wavelength and hence the Bragg deflection angle. What is the Doppler shift in the wavelength? What is the relative intensity in the first order ...
offr-ee230
... Quality factor: Sharpness of the resonance. Ratio of the operation wavelength and the resonant line width. Stored energy divided by the power lost per optical cycle. (typically: 104 – 109) ...
... Quality factor: Sharpness of the resonance. Ratio of the operation wavelength and the resonant line width. Stored energy divided by the power lost per optical cycle. (typically: 104 – 109) ...
Using Complementary Acoustic and Optical Techniques for
... binding studies is avoided. SPR can sense changes in the effective refractive index smaller than 10−5 with a time resolution of a few seconds [8]. At lower resolution for changes in the refractive index, the time step is only limited by the temporal resolution of the intensity detector. In the Krets ...
... binding studies is avoided. SPR can sense changes in the effective refractive index smaller than 10−5 with a time resolution of a few seconds [8]. At lower resolution for changes in the refractive index, the time step is only limited by the temporal resolution of the intensity detector. In the Krets ...
Downloaded
... semitransparent metal film under conditions of total internal reflection for transverse-magneticpolarized light. Coupling between Tamm and surface plasmon-polaritons leads to repulsion of their C 2013 AIP Publishing LLC. dispersion curves controlled by metal film thickness. V [http://dx.doi.org/10.1 ...
... semitransparent metal film under conditions of total internal reflection for transverse-magneticpolarized light. Coupling between Tamm and surface plasmon-polaritons leads to repulsion of their C 2013 AIP Publishing LLC. dispersion curves controlled by metal film thickness. V [http://dx.doi.org/10.1 ...
IO.5 Elliptically Polarized Light - FSU
... of the other in phase, and the motion of the end of the resultant electric vector will be elliptical as in (2). If the crystal is of such a thickness that one beam is a quarter wavelength ahead of the other upon emergence, the crystal is known as a quarter-wave plate, and (4) holds for the resultant ...
... of the other in phase, and the motion of the end of the resultant electric vector will be elliptical as in (2). If the crystal is of such a thickness that one beam is a quarter wavelength ahead of the other upon emergence, the crystal is known as a quarter-wave plate, and (4) holds for the resultant ...
07 Propagation of Waves
... ν = de.f . Note that larger values of the refractivity mean that the refractive index is larger and thus so is the deviation angle in Snell’s law. A larger Abbé number means that the mean dispersion is smaller and thus there will be a smaller difference in the angles of refraction. Such glasses with ...
... ν = de.f . Note that larger values of the refractivity mean that the refractive index is larger and thus so is the deviation angle in Snell’s law. A larger Abbé number means that the mean dispersion is smaller and thus there will be a smaller difference in the angles of refraction. Such glasses with ...
Immersion microscopy based on photonic crystal materials
... of the SPP group velocity may be either positive or negative in the vicinity of the surface plasmon resonance frequency, and the SPP dispersion appears to be almost flat in this region. As we have shown above, the latter circumstance is necessary for high resolution imaging applications. On the othe ...
... of the SPP group velocity may be either positive or negative in the vicinity of the surface plasmon resonance frequency, and the SPP dispersion appears to be almost flat in this region. As we have shown above, the latter circumstance is necessary for high resolution imaging applications. On the othe ...
Circular Dichroism
... also n n. This phenomenon is called birefringence. A thin mica plate is birefringent but does not refract an incident beam significantly so that there is practically no directional deviation of an incident beam. However, when the incident beam is linearly polarized and enters the mica plate, th ...
... also n n. This phenomenon is called birefringence. A thin mica plate is birefringent but does not refract an incident beam significantly so that there is practically no directional deviation of an incident beam. However, when the incident beam is linearly polarized and enters the mica plate, th ...
158 The components of light
... As a physicist one tends to consider this field as ugly. In communications engineering one would call such a time function noise, and noise is a phenomenon that is preferably to be avoided or eliminated. Isn’t it true that a monochromatic plane wave is best for experimenting? Also the mathematical d ...
... As a physicist one tends to consider this field as ugly. In communications engineering one would call such a time function noise, and noise is a phenomenon that is preferably to be avoided or eliminated. Isn’t it true that a monochromatic plane wave is best for experimenting? Also the mathematical d ...
document
... a function of the wavelength of the light. It is larger at shorter wavelengths. Consequently, a light beam consisting of rays of different wavelength (e.g., sun light) will be refracted at different angles at the interface of two different media. This spreading of light is ...
... a function of the wavelength of the light. It is larger at shorter wavelengths. Consequently, a light beam consisting of rays of different wavelength (e.g., sun light) will be refracted at different angles at the interface of two different media. This spreading of light is ...
2 The Failure of Classical Mechanics and Wave-Particle
... As the molecules “empty” out or “rush” back into space, this changes the local density which in turns changes the pressure. And this pressure inequality generates further motion of the molecules. Our ears pick up the motion of air, and the greater the amplitude of the motion of the air molecules, th ...
... As the molecules “empty” out or “rush” back into space, this changes the local density which in turns changes the pressure. And this pressure inequality generates further motion of the molecules. Our ears pick up the motion of air, and the greater the amplitude of the motion of the air molecules, th ...
Cell Mechanics
... In the ray optics regime, the size of the object is much larger than the wave lenght of the light, and a single beam can be tracked throughout the particle. (This situation is for example when whole cells are trapped using infrared light while suspended in solution. The incident laser beam can be de ...
... In the ray optics regime, the size of the object is much larger than the wave lenght of the light, and a single beam can be tracked throughout the particle. (This situation is for example when whole cells are trapped using infrared light while suspended in solution. The incident laser beam can be de ...
The Photoelectric Effect
... voltage, or resistance) vary when light is incident upon it. The most common type consists of two electrodes separated by a light-sensitive semiconductor material. A battery or other voltage source connected to the electrodes sets up a current even in the absence of light; when light strikes the sem ...
... voltage, or resistance) vary when light is incident upon it. The most common type consists of two electrodes separated by a light-sensitive semiconductor material. A battery or other voltage source connected to the electrodes sets up a current even in the absence of light; when light strikes the sem ...
Photons and Matter Waves
... true? (a) The greater the frequency of the incident light is, the greater is the stopping potential. (b) The greater the intensity of the incident light is, the greater is the cutoff frequency. (c) The greater the work function of the target material is, the greater is the stopping potential. (d) Th ...
... true? (a) The greater the frequency of the incident light is, the greater is the stopping potential. (b) The greater the intensity of the incident light is, the greater is the cutoff frequency. (c) The greater the work function of the target material is, the greater is the stopping potential. (d) Th ...
Imaging
... Each CCD is divided into many groups of electrodes called pixels. The exact number of pixels depends on the individual pixel size and the cost of the array. Typically, a low-cost commercial array has dimensions of 600 x 300 pixels, while high cost arrays for scientific applications have dimensions c ...
... Each CCD is divided into many groups of electrodes called pixels. The exact number of pixels depends on the individual pixel size and the cost of the array. Typically, a low-cost commercial array has dimensions of 600 x 300 pixels, while high cost arrays for scientific applications have dimensions c ...
Surface plasmon resonance microscopy
Surface Plasmon Resonance Microscopy (SPRM) is a label free analytical tool that combines the surface plasmon resonance of metallic surfaces with imaging of the metallic surface.The heterogeneity of the refractive index of the metallic surface imparts high contrast images, caused by the shift in the resonance angle.SPRM can achieve a thickness sensitivity of few tenths of nanometer and lateral resolution achieves values of micrometer scale.SPRM is used to characterize surfaces, self-assembled monolayers, multilayer films, metal nanoparticles, oligonucleotides arrays, binding and reduction reactions.Surface Plasmon polaritons are surface electromagnetic waves coupled to oscillating free electrons of a metallic surface that propagate along a metal/dielectric interface.Since polaritons are highly sensitive to small changes in the refractive index of the metallic material,it can be used as a biosensing tool that does not require labeling. SPRM measurements can be made in real-time.Wang and collaborators studied the binding kinetics of membrane proteins in single cells.The experimental setup of an SPRM can be seen in the Figure 1, where an adherent cell is grown on a gold film and placed in an inverted microscope, p-polarized light was used to create the surface plasmons on the gold film and a CCD camera was used to create the SPR image.