Optical fibres solutions
... The light from the laser is able to remain inside the stream of water because of total internal reflection. The light hits the waterair junction at an angle greater than the critical angle and is reflected back into the water. It continues to bounce back and forth down the water stream. ...
... The light from the laser is able to remain inside the stream of water because of total internal reflection. The light hits the waterair junction at an angle greater than the critical angle and is reflected back into the water. It continues to bounce back and forth down the water stream. ...
An analogy strategy for transformation optics Yao Chen Liu
... Transformation optics has aroused interest from a wide spectrum of scientific communities [1–10]. The term was coined based on the fact that Maxwell’s equations are form-invariant under coordinate transformations [2], meaning electromagnetic waves in one coordinate system can be mapped into another o ...
... Transformation optics has aroused interest from a wide spectrum of scientific communities [1–10]. The term was coined based on the fact that Maxwell’s equations are form-invariant under coordinate transformations [2], meaning electromagnetic waves in one coordinate system can be mapped into another o ...
Student Study Guide
... and consist of a positively charged nucleus of protons and neutrons orbited by a cloud of negatively charged electrons. Heat, light, and electricity are among the things that can excite atoms. Once excited, the atom’s electrons absorb energy and briefly move from their normal orbit level to one slig ...
... and consist of a positively charged nucleus of protons and neutrons orbited by a cloud of negatively charged electrons. Heat, light, and electricity are among the things that can excite atoms. Once excited, the atom’s electrons absorb energy and briefly move from their normal orbit level to one slig ...
TIE-41 Large Optical Glass Blanks
... Even though large transmitting lenses and prisms have been produced in the past, this cannot be taken for granted. The optical elements in the future will be even larger and the specifications will be much more stringent, reflecting the ambitious scientific goals of the new telescope generations. Th ...
... Even though large transmitting lenses and prisms have been produced in the past, this cannot be taken for granted. The optical elements in the future will be even larger and the specifications will be much more stringent, reflecting the ambitious scientific goals of the new telescope generations. Th ...
Optical absorption cross section of quantum dots
... not be fully inverted [4]. This situation may arise from rate-limiting capture processes at high injection and a high density of extended states which controls the quasi-Fermi level positions at high carrier density. In these circumstances the value obtained for σgain by assuming full inversion will ...
... not be fully inverted [4]. This situation may arise from rate-limiting capture processes at high injection and a high density of extended states which controls the quasi-Fermi level positions at high carrier density. In these circumstances the value obtained for σgain by assuming full inversion will ...
Graded-index fibers (GRA)
... This chapter describes the wave propagation in graded-index fibers. In particular, the number of propagable waves and the optimal shape of the refractive index profile will be discussed. The single-mode step-index fiber has a high bandwidth (essentially limited only by the waveguide dispersion and m ...
... This chapter describes the wave propagation in graded-index fibers. In particular, the number of propagable waves and the optimal shape of the refractive index profile will be discussed. The single-mode step-index fiber has a high bandwidth (essentially limited only by the waveguide dispersion and m ...
Fiberoptic Sample Holder (FOSH): Characteristics and Uses APPLICATION NOTE 1056-201
... signal from the sample holder. Samples are mounted in a small quartz bucket that has a quartz lid to hold them in place. The bucket has an inner diameter of 1.6 mm and a depth of 1.6 mm. The small volume of the quartz bucket limits the size of the samples that can be inserted, so you may need to des ...
... signal from the sample holder. Samples are mounted in a small quartz bucket that has a quartz lid to hold them in place. The bucket has an inner diameter of 1.6 mm and a depth of 1.6 mm. The small volume of the quartz bucket limits the size of the samples that can be inserted, so you may need to des ...
Translation-invariant object recognition system using an optical correlator and a super-
... the edge enhancement by two-wave mixing in photorefractive materials.20 This technique is based on the fact that the low frequencies of the spatial FT of an image typically occupy a much smaller area than do the high frequencies. Hence, it is possible to expose the hologram to an amount of radiation ...
... the edge enhancement by two-wave mixing in photorefractive materials.20 This technique is based on the fact that the low frequencies of the spatial FT of an image typically occupy a much smaller area than do the high frequencies. Hence, it is possible to expose the hologram to an amount of radiation ...
Revista Mexicana de Física . Simulation of Michelson and
... Almost every physics lab at the undergraduate level includes the Michelson and Young experiments in the Optics program. This is important not only from the historical point of view but also for the didactic development of a General Physics course [1]. In this paper, these popular optical experiments ...
... Almost every physics lab at the undergraduate level includes the Michelson and Young experiments in the Optics program. This is important not only from the historical point of view but also for the didactic development of a General Physics course [1]. In this paper, these popular optical experiments ...
Pavadinimas - National Tsing Hua University
... Magnetic flux is again determined by the sample length (rather than the area)! ...
... Magnetic flux is again determined by the sample length (rather than the area)! ...
Nonlinear interfaces: intrinsically nonparaxial regimes and effects
... Two completely different scenarios are found as κ changes from 10−4 to 2.5×10−3 . In the first case, figure 1(a), significant nonlinear corrections appear only at ∼ η0 , since the constant γ lines are concentrated in the → 1 region. This condition is equivalent to the one obtained in previous pa ...
... Two completely different scenarios are found as κ changes from 10−4 to 2.5×10−3 . In the first case, figure 1(a), significant nonlinear corrections appear only at ∼ η0 , since the constant γ lines are concentrated in the → 1 region. This condition is equivalent to the one obtained in previous pa ...
Shaped ultrafast laser pulses in the deep ultraviolet
... There is substantial interest in using ultraviolet light for probing molecular chemistry on a femtosecond timescale. Optical pulse shaping (for example see [1, 2, 3]) has been used extensively in applications that require control over broadband laser pulses. By combining pulse shapers and feedback a ...
... There is substantial interest in using ultraviolet light for probing molecular chemistry on a femtosecond timescale. Optical pulse shaping (for example see [1, 2, 3]) has been used extensively in applications that require control over broadband laser pulses. By combining pulse shapers and feedback a ...
Active semiconductor-based grating waveguide structures
... transmitted, and diffracted waves. At resonance, there is destructive interference between the transmitted wave and the diffracted wave. ...
... transmitted, and diffracted waves. At resonance, there is destructive interference between the transmitted wave and the diffracted wave. ...
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 ...
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.