Radiative Transfer Theory - UCL Department of Geography
... Radiative transfer models have been used extensively since the 1960s to model scattering from canopies at optical wavelengths (Ross, 1981). This approach first exploited in the microwave scattering context during the 1980s. The models take as a starting point consideration of energy balance across a ...
... Radiative transfer models have been used extensively since the 1960s to model scattering from canopies at optical wavelengths (Ross, 1981). This approach first exploited in the microwave scattering context during the 1980s. The models take as a starting point consideration of energy balance across a ...
d) Laser system and its applications Question Bank
... Q.14: Derive the Planck’s radiation formula and show that the Rayleigh-Jeans law can be obtained from it as a limiting form. Q.15: Obtain Wien’s displacement law using the Planck’s radiation formula. Show that the total energy density for a black-body radiation is proportional to T4. Q.16: Derive t ...
... Q.14: Derive the Planck’s radiation formula and show that the Rayleigh-Jeans law can be obtained from it as a limiting form. Q.15: Obtain Wien’s displacement law using the Planck’s radiation formula. Show that the total energy density for a black-body radiation is proportional to T4. Q.16: Derive t ...
Diffraction of light by a single slit and gratings
... at any angle, at which we may divide the slit into an even number of slices with each having half a wavelength path difference to the wavelets of the next neighbouring slice. This, finally, results into the condiction for angles at which stripes of with vanishing intensity are observed ...
... at any angle, at which we may divide the slit into an even number of slices with each having half a wavelength path difference to the wavelets of the next neighbouring slice. This, finally, results into the condiction for angles at which stripes of with vanishing intensity are observed ...
Our single crystal CVD diamond opens the way to new
... optic is a critical parameter in the performance of the equipment and processes, single crystal CVD diamond sets the standard. ...
... optic is a critical parameter in the performance of the equipment and processes, single crystal CVD diamond sets the standard. ...
Basics of Non-Linear Fiber Optics
... bandwidth of the wave is very small. This assumption is quite valid for most of the communication signals, since the carrier frequency is of the order of 1014 Hz (optical frequency) and the modulation frequency (same as data rate) is of the order of 109 1010 Hz. 4. The non-linearity is a small per ...
... bandwidth of the wave is very small. This assumption is quite valid for most of the communication signals, since the carrier frequency is of the order of 1014 Hz (optical frequency) and the modulation frequency (same as data rate) is of the order of 109 1010 Hz. 4. The non-linearity is a small per ...
Physical Optics
... The study of light has been an important part of science from its beginning. The ancient Greeks and, prior to the Middle Ages, Islamic scholars provided important insights. With the coming of the Scientific Revolution in the 16th and 17th centuries, optics, in the shape of telescopes and microscopes ...
... The study of light has been an important part of science from its beginning. The ancient Greeks and, prior to the Middle Ages, Islamic scholars provided important insights. With the coming of the Scientific Revolution in the 16th and 17th centuries, optics, in the shape of telescopes and microscopes ...
radar cross section (rcs)
... RADAR CROSS SECTION (RCS) Radar cross section is the measure of a target's ability to reflect radar signals in the direction of the radar receiver, i.e. it is a measure of the ratio of backscatter power per steradian (unit solid angle) in the direction of the radar (from the target) to the power den ...
... RADAR CROSS SECTION (RCS) Radar cross section is the measure of a target's ability to reflect radar signals in the direction of the radar receiver, i.e. it is a measure of the ratio of backscatter power per steradian (unit solid angle) in the direction of the radar (from the target) to the power den ...
Deep subwavelength nanolithography using localized surface plasmon modes on
... qualitatively. The amplitude transmitted 共H-field兲 at 0 = 365 nm for p-polarized waves as a function of transverse wavenumber 共k兲 through a 40 nm thick silver slab shows that evanescent waves can be transmitted with a large amplitude for the wave numbers between 2.5k0 and 8k0 共where k0 = 2 / 0兲, ...
... qualitatively. The amplitude transmitted 共H-field兲 at 0 = 365 nm for p-polarized waves as a function of transverse wavenumber 共k兲 through a 40 nm thick silver slab shows that evanescent waves can be transmitted with a large amplitude for the wave numbers between 2.5k0 and 8k0 共where k0 = 2 / 0兲, ...
Lens Aberrations
... Contains a molecular analogue of the wire grid. 1. Sheet of clear polyvinyl alcohol is heated and stretched. 2. Then it is dipped in an ink solution rich in Iodine. 3. Iodine is incorporated into straight long-chain polymeric molecules allowing electron conduction along the chain, simulating a metal ...
... Contains a molecular analogue of the wire grid. 1. Sheet of clear polyvinyl alcohol is heated and stretched. 2. Then it is dipped in an ink solution rich in Iodine. 3. Iodine is incorporated into straight long-chain polymeric molecules allowing electron conduction along the chain, simulating a metal ...
Electrostatic micromirrors for subaperturing in an
... degree to which the aberrated wavefront departs from an ideal plane wave. Wavefront sensors are extremely important in the field of adaptive optics (AO). In an AO system, information about propagation distortion is passed to an image correction device which compensates for media-induced aberrations [ ...
... degree to which the aberrated wavefront departs from an ideal plane wave. Wavefront sensors are extremely important in the field of adaptive optics (AO). In an AO system, information about propagation distortion is passed to an image correction device which compensates for media-induced aberrations [ ...
Global measurement of water waves by Fourier transform
... common to all of them is very simple. In its more elementary form, a typical fringe projection profilometry setup consists of a projection device and an image recording system. A fringe pattern of known characteristics is projected onto the test object and the resulting image is observed from a diff ...
... common to all of them is very simple. In its more elementary form, a typical fringe projection profilometry setup consists of a projection device and an image recording system. A fringe pattern of known characteristics is projected onto the test object and the resulting image is observed from a diff ...
Non-specular reflection of convergent beams from Iiquid-solid interface
... by the dashed lins in Figure 1 . The beam that would be reflected geometrically from a rigid surface is also shown with waist at a distance 1 along the reflected beam axis. In addition to the x, z coordinate system, ...
... by the dashed lins in Figure 1 . The beam that would be reflected geometrically from a rigid surface is also shown with waist at a distance 1 along the reflected beam axis. In addition to the x, z coordinate system, ...
Interferometric near-infrared spectroscopy directly quantifies optical
... 2 − g 2 0, since γ 1 0 1. However, unless β is known a priori or fixed at a known value (e.g., 1) through careful experimental design [27], η cannot usually be estimated independently of β. Approaches to address non-ergodicity include the use of higher-order intensity autocorrelations [11,28], ...
... 2 − g 2 0, since γ 1 0 1. However, unless β is known a priori or fixed at a known value (e.g., 1) through careful experimental design [27], η cannot usually be estimated independently of β. Approaches to address non-ergodicity include the use of higher-order intensity autocorrelations [11,28], ...
Sample questions on optical fibre section of course
... Discuss in detail the advantages / disadvantages of the three main types of fibre connection, fusion splice, mechanical splice and connectorisation. ...
... Discuss in detail the advantages / disadvantages of the three main types of fibre connection, fusion splice, mechanical splice and connectorisation. ...
Convex Mirrors
... concave or a convex mirror? Determine the focal length of the mirror Archimedes might have used to burn ships that were 150 m away. Justify your answer. 5.12 Regular problem You wish to order a mirror from a scientific supply company. You want to use the mirror while shaving or applying makeup. The ...
... concave or a convex mirror? Determine the focal length of the mirror Archimedes might have used to burn ships that were 150 m away. Justify your answer. 5.12 Regular problem You wish to order a mirror from a scientific supply company. You want to use the mirror while shaving or applying makeup. The ...
Optical Gain Experiment Manual
... in 1971 is a direct measurement of the optical gain. A sample from the active material is pumped by a homogeneous line of a laser beam emitted from high power pulsed laser. The emitted light from the edge of the sample is collected (photo-luminescence spectrum) as shown in fig. 4 [4]. When the lengt ...
... in 1971 is a direct measurement of the optical gain. A sample from the active material is pumped by a homogeneous line of a laser beam emitted from high power pulsed laser. The emitted light from the edge of the sample is collected (photo-luminescence spectrum) as shown in fig. 4 [4]. When the lengt ...
Retroreflector
A retroreflector (sometimes called a retroflector or cataphote) is a device or surface that reflects light back to its source with a minimum of scattering. In a retroreflector an electromagnetic wavefront is reflected back along a vector that is parallel to but opposite in direction from the wave's source. The angle of incidence at which the device or surface reflects light in this way is greater than zero, unlike a planar mirror, which does this only if the mirror is exactly perpendicular to the wave front, having a zero angle of incidence.