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Three-dimensional photon confinement in photonic low-dimensional periodicity of crystals
... The confinement of light to small volumes has important consequences on the properties of optical emission. The density of electromagnetic states, for example, can be significantly modified, and spontaneous emission can be either enhanced or inhibited. Confined systems can lead to the reduction in s ...
... The confinement of light to small volumes has important consequences on the properties of optical emission. The density of electromagnetic states, for example, can be significantly modified, and spontaneous emission can be either enhanced or inhibited. Confined systems can lead to the reduction in s ...
Light amplificated by stimulated emission of radiation
... Linear (or standing-wave) resonators (Figure 1, top) are made such that the light bounces back and forth between two end mirrors. For continuously circulating light, there are always counterpropagating waves, which interfere with each other to form a standing-wave pattern. In ring resonators (Figure ...
... Linear (or standing-wave) resonators (Figure 1, top) are made such that the light bounces back and forth between two end mirrors. For continuously circulating light, there are always counterpropagating waves, which interfere with each other to form a standing-wave pattern. In ring resonators (Figure ...
Slide 1
... o Absence of out-of-focus absorption. o The infrared excitation light suffers less scattering. ...
... o Absence of out-of-focus absorption. o The infrared excitation light suffers less scattering. ...
Understanding Microscopy And Filtering Techniques
... with an eyepiece, but digital video microscopes achieve higher resolution and higher precision than what is typically seen with the human eye. There are numerous applications and setups for these microscopes, ranging from the use of standard DIN and JIS objectives to advanced infinity-corrected obje ...
... with an eyepiece, but digital video microscopes achieve higher resolution and higher precision than what is typically seen with the human eye. There are numerous applications and setups for these microscopes, ranging from the use of standard DIN and JIS objectives to advanced infinity-corrected obje ...
Luminescence properties of a Fibonacci photonic
... refractive index contrast and their solubility. The refractive indices of CA and PVK at 600 nm are 1.475 and 1.683, respectively. CA is soluble in polar solvents such as diacetone alcohol and PVK is soluble in non-polar solvent such as chlorobenzene. Similar approach using alternating layers of spin ...
... refractive index contrast and their solubility. The refractive indices of CA and PVK at 600 nm are 1.475 and 1.683, respectively. CA is soluble in polar solvents such as diacetone alcohol and PVK is soluble in non-polar solvent such as chlorobenzene. Similar approach using alternating layers of spin ...
V.90-3-James H. Cole, Clay Kirkendall, Anthony Dandridge, Gary
... complex due to the required number of compensating interferometers. The importance of this multiplexing technique is that it forms the basis for the last multiplexing approach shown, time/coherence multiplexing17. In this case, each sensor interferometer has the same path length delay but a relative ...
... complex due to the required number of compensating interferometers. The importance of this multiplexing technique is that it forms the basis for the last multiplexing approach shown, time/coherence multiplexing17. In this case, each sensor interferometer has the same path length delay but a relative ...
pdf
... uniform, defect-free, large-area 3D photonic structures, in particular with narrowband diffraction in the visible spectrum is limited.[8] For example, producing highquality monodisperse, highly-charged polystyrene particles through emulsion polymerization to prepare opals require lengthy dialysis ti ...
... uniform, defect-free, large-area 3D photonic structures, in particular with narrowband diffraction in the visible spectrum is limited.[8] For example, producing highquality monodisperse, highly-charged polystyrene particles through emulsion polymerization to prepare opals require lengthy dialysis ti ...
Semiconductor Laser Diodes
... • Semiconductor laser diodes are cheap and easy to use compared to other types of lasers. • They can be used for many applications, and have the ability to be produced in a wide range of wavelengths and powers. • The most important electronic consideration is the fact that a precisely controlled cur ...
... • Semiconductor laser diodes are cheap and easy to use compared to other types of lasers. • They can be used for many applications, and have the ability to be produced in a wide range of wavelengths and powers. • The most important electronic consideration is the fact that a precisely controlled cur ...
(full text)
... A finite-element method for calculating the illumination-dependence of absorption in three-dimensional nanostructures is presented based on the radio frequency module of the Comsol Multiphysics software package (Comsol AB). This method is capable of numerically determining the optical response and n ...
... A finite-element method for calculating the illumination-dependence of absorption in three-dimensional nanostructures is presented based on the radio frequency module of the Comsol Multiphysics software package (Comsol AB). This method is capable of numerically determining the optical response and n ...
Distributed Temperature Sensing Using Stimulated
... difference and analyzing the reflecting signal in frequency domain. Theoretical analysis and experimental demonstration are presented. Two adjacent reflection points 50 km away from the reflectometry with a gap of 11 meters between each other is distinguished. It is estimated that the operating rang ...
... difference and analyzing the reflecting signal in frequency domain. Theoretical analysis and experimental demonstration are presented. Two adjacent reflection points 50 km away from the reflectometry with a gap of 11 meters between each other is distinguished. It is estimated that the operating rang ...
LINEAR AND NONLINEAR LIGHT BULLETS: RECENT
... 5(a)), instead of a single one as in other two-dimensional and three-dimensional nondissipative (Hamiltonian) nonlinear dynamical systems. This unique two-cusp structure of the soliton norm-Hamiltonian diagram is known as the so-called “swallowtail” catastrophe; see, e.g., Ref. [34]. Typical spatial ...
... 5(a)), instead of a single one as in other two-dimensional and three-dimensional nondissipative (Hamiltonian) nonlinear dynamical systems. This unique two-cusp structure of the soliton norm-Hamiltonian diagram is known as the so-called “swallowtail” catastrophe; see, e.g., Ref. [34]. Typical spatial ...
Evidence for wavelength dependence of the scattering phase
... coast, occupied in November 2001, with significantly higher values of all three IOPs. The backscattering ratio for ST19 was almost double that at B4. The IOPs in Fig. 5 were used as inputs for Hydrolight simulations, and the modeled profiles of Ed and Lu for the top 10 m of the water column compared ...
... coast, occupied in November 2001, with significantly higher values of all three IOPs. The backscattering ratio for ST19 was almost double that at B4. The IOPs in Fig. 5 were used as inputs for Hydrolight simulations, and the modeled profiles of Ed and Lu for the top 10 m of the water column compared ...
Optical negative refraction by four-wave mixing in thin metallic nanostructures LETTERS *
... a positive refractive index and therefore exhibit refraction in the positive direction, artificially engineered negative index metamaterials have been shown capable of bending light waves negatively2–8 . Such a negative refractive index is the key to achieving a perfect lens that is capable of imagi ...
... a positive refractive index and therefore exhibit refraction in the positive direction, artificially engineered negative index metamaterials have been shown capable of bending light waves negatively2–8 . Such a negative refractive index is the key to achieving a perfect lens that is capable of imagi ...
ACOUSTO-OPTICS
... team, were awarded the Nobel Prize in 1915 for their studies of the diffraction from periodic structures, such as those created by sound. ...
... team, were awarded the Nobel Prize in 1915 for their studies of the diffraction from periodic structures, such as those created by sound. ...
Noise-equivalent sensitivity of photoacoustics
... light intensity. So in the sense of energy conversion, the photoacoustic effect is nonlinear. Pushing the sensitivity of photoacoustics then logically requires the use of high optical intensity; however, as in any optical excitation technique, photoacoustic generation exhibits nonlinearity in anothe ...
... light intensity. So in the sense of energy conversion, the photoacoustic effect is nonlinear. Pushing the sensitivity of photoacoustics then logically requires the use of high optical intensity; however, as in any optical excitation technique, photoacoustic generation exhibits nonlinearity in anothe ...
Radiative Transfer Theory - UCL Department of Geography
... 3. The Radiative Transfer Equation 3.1 The Radiative Transfer Equation 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 m ...
... 3. The Radiative Transfer Equation 3.1 The Radiative Transfer Equation 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 m ...
Lecture 7: Optical Characterization of Inorganic - CDT-PV
... • Optimum band gap for PV determined by solar spectrum and payoff between absorption and thermal losses • Thickness of absorber required is determined by absorption coefficient • Absorption coefficient is not straightforward to obtain from T and R • Direct band gap significantly better than indirect ...
... • Optimum band gap for PV determined by solar spectrum and payoff between absorption and thermal losses • Thickness of absorber required is determined by absorption coefficient • Absorption coefficient is not straightforward to obtain from T and R • Direct band gap significantly better than indirect ...
Low-coherence heterodyne photon correlation spectroscopy
... exceeds the length of the reference arm by 1.3 mm it will again experience partial coherence with the reference arm and contribute to the detected signal rather than being rejected. A short coherence length light source without or with reduced “coherent side modes” may further extend the applicabi ...
... exceeds the length of the reference arm by 1.3 mm it will again experience partial coherence with the reference arm and contribute to the detected signal rather than being rejected. A short coherence length light source without or with reduced “coherent side modes” may further extend the applicabi ...
Silicon photonics
Silicon photonics is the study and application of photonic systems which use silicon as an optical medium. The silicon is usually patterned with sub-micrometre precision, into microphotonic components. These operate in the infrared, most commonly at the 1.55 micrometre wavelength used by most fiber optic telecommunication systems. The silicon typically lies on top of a layer of silica in what (by analogy with a similar construction in microelectronics) is known as silicon on insulator (SOI).Silicon photonic devices can be made using existing semiconductor fabrication techniques, and because silicon is already used as the substrate for most integrated circuits, it is possible to create hybrid devices in which the optical and electronic components are integrated onto a single microchip. Consequently, silicon photonics is being actively researched by many electronics manufacturers including IBM and Intel, as well as by academic research groups such as that of Prof. Michal Lipson, who see it is a means for keeping on track with Moore's Law, by using optical interconnects to provide faster data transfer both between and within microchips.The propagation of light through silicon devices is governed by a range of nonlinear optical phenomena including the Kerr effect, the Raman effect, two photon absorption and interactions between photons and free charge carriers. The presence of nonlinearity is of fundamental importance, as it enables light to interact with light, thus permitting applications such as wavelength conversion and all-optical signal routing, in addition to the passive transmission of light.Silicon waveguides are also of great academic interest, due to their ability to support exotic nonlinear optical phenomena such as soliton propagation.