Ultra-low power parametric frequency conversion in a silicon
... Since FWM is a nonlinear process, it is by definition a function of the optical intensity. The platform we use in order to increase the optical intensity in the nonlinear medium consists of a micro-scale photonic structure that confines light both in the transverse and longitudinal direction. The st ...
... Since FWM is a nonlinear process, it is by definition a function of the optical intensity. The platform we use in order to increase the optical intensity in the nonlinear medium consists of a micro-scale photonic structure that confines light both in the transverse and longitudinal direction. The st ...
CHAPTER 3 Optical Components of Spectrometers
... given by Fresnel equation • The larger the difference in refractive indices, the larger the reflectance. • When 1 = 2, there is no reflection. • For an air-glass interface, where air = 1 and glass = 1.5, approximately 4% of the light incident perpendicular to the interface is reflected and 96% ...
... given by Fresnel equation • The larger the difference in refractive indices, the larger the reflectance. • When 1 = 2, there is no reflection. • For an air-glass interface, where air = 1 and glass = 1.5, approximately 4% of the light incident perpendicular to the interface is reflected and 96% ...
Refractive Indices, Order Parameter and Optical Transmittance
... S = 12 h3 cos2 θ − 1i, where θ is angle between optic axis and long molecular axis of a molecule. Macroscopic order parameter (Q) as determined by different properties differs among them and also differs from microscopic order parameter because the effect of the local field is different on different ...
... S = 12 h3 cos2 θ − 1i, where θ is angle between optic axis and long molecular axis of a molecule. Macroscopic order parameter (Q) as determined by different properties differs among them and also differs from microscopic order parameter because the effect of the local field is different on different ...
The Electron Microscope as an Illustration of the Wave Nature of the
... Where sinα is known as the numerical aperture with α the acceptance angle of the objective. Since the electron wave has a wavelength of 10-12 metres, while the light wave has a value of 5 x 10-7 metres, at first sight it would seem that the resolving power of the electron microscope should be nearly ...
... Where sinα is known as the numerical aperture with α the acceptance angle of the objective. Since the electron wave has a wavelength of 10-12 metres, while the light wave has a value of 5 x 10-7 metres, at first sight it would seem that the resolving power of the electron microscope should be nearly ...
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... time. Even when the homogeneous relaxation can be ignored, however, the number of oscillations that can be observed in an optical nutation signal is limited by damping introduced by the strong inhomogeneous dephasing which is found in most optical systems. The presence of this strong damping limits ...
... time. Even when the homogeneous relaxation can be ignored, however, the number of oscillations that can be observed in an optical nutation signal is limited by damping introduced by the strong inhomogeneous dephasing which is found in most optical systems. The presence of this strong damping limits ...
ELECTRO-OPTICS
... This leads to changes in the optical properties of the medium, i.e., it exhibits an electro-optic effect. The molecules of a twisted nematic liquid crystal are organized in a helical pattern so that they normally act as polarization rotators. An applied electric field removes the helical pattern, th ...
... This leads to changes in the optical properties of the medium, i.e., it exhibits an electro-optic effect. The molecules of a twisted nematic liquid crystal are organized in a helical pattern so that they normally act as polarization rotators. An applied electric field removes the helical pattern, th ...
EBSD SEM TEM
... However, while the angle at which the first minimum occurs (which is sometimes described as the radius of the Airy disk) depends only on wavelength and aperture size D, the appearance of the diffraction pattern will vary with the intensity (brightness) of the light source. Because any detector (ey ...
... However, while the angle at which the first minimum occurs (which is sometimes described as the radius of the Airy disk) depends only on wavelength and aperture size D, the appearance of the diffraction pattern will vary with the intensity (brightness) of the light source. Because any detector (ey ...
Optical switches
... • more difficult to splice and to exactly align two fibers together • suitable for transmitting modulated signals at 40 Gbit/s or higher and up to 200 km without amplification P. Raatikainen ...
... • more difficult to splice and to exactly align two fibers together • suitable for transmitting modulated signals at 40 Gbit/s or higher and up to 200 km without amplification P. Raatikainen ...
Stops: Finite nature of lenses affects the energy and... and imaged by optical systems
... determines the light gathering ability of the lens. Field Stop (F.S.) – Limits the size or angular breadth of the object. In a camera, the edge of the film itself bounds the image plane and becomes the F.S. Entrance Pupil – Image of the A.S. as seen from the object side of the lens system (below). E ...
... determines the light gathering ability of the lens. Field Stop (F.S.) – Limits the size or angular breadth of the object. In a camera, the edge of the film itself bounds the image plane and becomes the F.S. Entrance Pupil – Image of the A.S. as seen from the object side of the lens system (below). E ...
Total Reflection and Negative Refraction of
... In this Letter, we demonstrate, numerically, that DESWs satisfy the same laws of reflection and refraction as light waves. Based on those wave phenomena, we elucidate for the first time the total reflection and negative refraction effects of DESWs in laterally inhomogeneous ferromagnetic thin films ...
... In this Letter, we demonstrate, numerically, that DESWs satisfy the same laws of reflection and refraction as light waves. Based on those wave phenomena, we elucidate for the first time the total reflection and negative refraction effects of DESWs in laterally inhomogeneous ferromagnetic thin films ...
Break-up of two-dimensional bright spatial solitons due to transverse
... amount of noise that can be decomposed in a set of Fourier harmonics with different transverse wave numbers ky . In a linear regime the intensity of each harmonic grows with the propagation distance as ² exp[2Γ x], where Γ (ky ) is the harmonics’ growth rate (see fig. 1) and ² is its initial intensi ...
... amount of noise that can be decomposed in a set of Fourier harmonics with different transverse wave numbers ky . In a linear regime the intensity of each harmonic grows with the propagation distance as ² exp[2Γ x], where Γ (ky ) is the harmonics’ growth rate (see fig. 1) and ² is its initial intensi ...
Introduction to optical fibers
... Polarization maintaining (or preserving) (PM) optical fibers. In some applications maintaining constant polarization of light in an optical fiber is necessary, e.g. in fiber interferometers, fiber lasers, sensors, external fiber modulators, coherent transmission and in integrated optical circuits c ...
... Polarization maintaining (or preserving) (PM) optical fibers. In some applications maintaining constant polarization of light in an optical fiber is necessary, e.g. in fiber interferometers, fiber lasers, sensors, external fiber modulators, coherent transmission and in integrated optical circuits c ...
Chapter 2
... temperature variation b. not exact 50:50 c. not flat top passbands Change temperature (or refractive index) of ...
... temperature variation b. not exact 50:50 c. not flat top passbands Change temperature (or refractive index) of ...
Deviation from Snell`s law for beams transmitted
... or at the critical angle to achieve adequately high Q values and may correspond to periodic ray orbits (POs), which are stable, unstable, or marginally stable. The natural method for predicting how such a mode will emit or scatter light is to apply Snell’s law to the ray orbit and follow the refract ...
... or at the critical angle to achieve adequately high Q values and may correspond to periodic ray orbits (POs), which are stable, unstable, or marginally stable. The natural method for predicting how such a mode will emit or scatter light is to apply Snell’s law to the ray orbit and follow the refract ...
LM Ch 8: Bright Field
... Except for the 1X and 4X objectives, working distance (the distance between the end of the lens and the slide) decreases as magnification increases. Never-the-less, a series of objectives from a given manufacturer will remain fairly close to focus when changing from one to another, even to the oil o ...
... Except for the 1X and 4X objectives, working distance (the distance between the end of the lens and the slide) decreases as magnification increases. Never-the-less, a series of objectives from a given manufacturer will remain fairly close to focus when changing from one to another, even to the oil o ...
Optical Fiber Amplifiers
... In fiber optic systems amplification of the signal is necessary because no fiber material is absolutely transparent. This causes the infrared light (usually around 1530nm) carried by a fiber to be attenuated as it travels through the material. Because of this attenuation, repeaters must be used in s ...
... In fiber optic systems amplification of the signal is necessary because no fiber material is absolutely transparent. This causes the infrared light (usually around 1530nm) carried by a fiber to be attenuated as it travels through the material. Because of this attenuation, repeaters must be used in s ...