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Introduction to THz Wave Photonics
Introduction to THz Wave Photonics

High Contrast Gratings for Integrated Optoelectronics
High Contrast Gratings for Integrated Optoelectronics

Optical Shop Testing
Optical Shop Testing

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azu_td_9829319_sip1_

... direction and recommend that it be accepted as fulfilling the dissertation requirement. ...
generation and propagation of optical vortices
generation and propagation of optical vortices

... φ - azimuthal cylindrical coordinate in Fourier space. φV - angular displacement of a vortex with respect to its initial position. Φ - phase. Ω - angular rate of rotation for a pair of vortices. ...
Tom Essinger-Hileman
Tom Essinger-Hileman

... I am grateful to many others for making my time at Princeton enjoyable. Unfortunately, there are too many to name individually. I greatly enjoyed Friday beer, summer softball, and many BBQs with my fellow physics graduate students. Thanks to the members of the Popayan soccer team for many exciting g ...
Multistep Parametric Processes in Nonlinear Optics
Multistep Parametric Processes in Nonlinear Optics

... motivation to study this kind of parametric interactions was to explore various possibilities for the simultaneous generation of several harmonics in a single nonlinear crystal (see, e.g., Akhmanov and Khokhlov [1964, 1972]) as well as to use the cascading of several parametric processes for measuri ...
Wu_umd_0117E_17432 - DRUM
Wu_umd_0117E_17432 - DRUM

... THE PLENOPTIC SENSOR Chensheng Wu, Doctorate, 2016 ...
RESONATOR OPTICS
RESONATOR OPTICS

... reflective, flat mirrors separated by a distance d (Fig. 9.1-l). This simple one-dimensional resonator is known as a Fabry-Perot etalon. We first consider an ideal resonator whose mirrors are lossless;the effect of lossesis included subsequently. Resonator Modes as Standing Waves A monochromatic wav ...
Multiplexed Digital Holography incorporating Speckle
Multiplexed Digital Holography incorporating Speckle

Gaussian Beam Propagation
Gaussian Beam Propagation

... Gaussian beams play such an important role in optical lasers as well as in longer wavelength systems that they have been extensively analyzed, starting with some of the classic treatments mentioned in Chapter 1. Almost every text on optical systems discusses Gaussian beam propagation in some detail, ...
Moiré and Fringe Projection Techniques
Moiré and Fringe Projection Techniques

... Since Lord Rayleigh first noticed the phenomena of moiré fringes, moiré techniques have been used for a number of testing applications. Righi (1887) first noticed that the relative displacement of two gratings could be determined by observing the movement of the moiré fringes. The next significant a ...
Role of wavefront aberrations of amplified femtosecond pulses in
Role of wavefront aberrations of amplified femtosecond pulses in

... Basic concepts of nonlinear optics .............................................. 53 3.1. Introduction........................................................................................................................... 53 3.2. Frequency mixing processes ....................................... ...
OPTICAL MINERALOGY-2
OPTICAL MINERALOGY-2

... If the random cuts were such that they were perpendicular to the c-axis, then light travelling through the calcite, along the c-axis would produce only one image andwould not become polarized. The c-axis coincides with the optic axis, which is the direction through the mineral along which light pro ...
Chapter 4 Optical Resonator
Chapter 4 Optical Resonator

... This represents the number of degrees of freedom for the optical waves existing in the resonator, i.e., the number of independent ways in which these waves may be ...
Full-text PDF - Research School of Physics and Engineering
Full-text PDF - Research School of Physics and Engineering

optical guided waves and devices - Workspace
optical guided waves and devices - Workspace

Basic Wavefront Aberration Theory for Optical Metrology
Basic Wavefront Aberration Theory for Optical Metrology

Propagation dynamics of optical vortices
Propagation dynamics of optical vortices

... phenomena. Already the radiation pressure and angular momentum from OV’s have been used to manipulate small particles and atoms.63–68 OVS’s are intriguing not only because they are the only known (2 1 1)-dimensional solitons in Kerr-like media but also because they may exhibit propagation dynamics d ...
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pdf file

spherical aberration
spherical aberration

... The magnitude of the differences between the tangential and sagittal MTF components clearly show more variability for the unequal conic design. ...
spherical aberration
spherical aberration

... The magnitude of the differences between the tangential and sagittal MTF components clearly show more variability for the unequal conic design. ...
Polarization-Independent Metamaterial Analog of
Polarization-Independent Metamaterial Analog of

... frequencies for normal incidence and linearly polarized waves is experimentally and numerically demonstrated. The metamaterial consists of coupled “bright” split-ring resonators (SRRs) and “dark” spiral resonators (SRs) with virtually equal resonance frequencies. Normally incident plane waves with l ...
Soliton Interactions and the Formation of Solitonic Patterns
Soliton Interactions and the Formation of Solitonic Patterns

FIBER OPTICS
FIBER OPTICS

1 2 3 4 5 ... 47 >

Fourier optics

Fourier optics is the study of classical optics using Fourier transforms, in which the wave is regarded as a superposition of plane waves that are not related to any identifiable sources; instead they are the natural modes of the propagation medium itself. Fourier optics can be seen as the dual of the Huygens–Fresnel principle, in which the wave is regarded as a superposition of expanding spherical waves which radiate outward from actual (physically identifiable) current sources via a Green's function relationship (see Double-slit experiment)A curved phasefront may be synthesized from an infinite number of these ""natural modes"" i.e., from plane wave phasefronts oriented in different directions in space. Far from its sources, an expanding spherical wave is locally tangent to a planar phase front (a single plane wave out of the infinite spectrum), which is transverse to the radial direction of propagation. In this case, a Fraunhofer diffraction pattern is created, which emanates from a single spherical wave phase center. In the near field, no single well-defined spherical wave phase center exists, so the wavefront isn't locally tangent to a spherical ball. In this case, a Fresnel diffraction pattern would be created, which emanates from an extended source, consisting of a distribution of (physically identifiable) spherical wave sources in space. In the near field, a full spectrum of plane waves is necessary to represent the Fresnel near-field wave, even locally. A ""wide"" wave moving forward (like an expanding ocean wave coming toward the shore) can be regarded as an infinite number of ""plane wave modes"", all of which could (when they collide with something in the way) scatter independently of one other. These mathematical simplifications and calculations are the realm of Fourier analysis and synthesis – together, they can describe what happens when light passes through various slits, lenses or mirrors curved one way or the other, or is fully or partially reflected. Fourier optics forms much of the theory behind image processing techniques, as well as finding applications where information needs to be extracted from optical sources such as in quantum optics. To put it in a slightly more complex way, similar to the concept of frequency and time used in traditional Fourier transform theory, Fourier optics makes use of the spatial frequency domain (kx, ky) as the conjugate of the spatial (x,y) domain. Terms and concepts such as transform theory, spectrum, bandwidth, window functions and sampling from one-dimensional signal processing are commonly used.
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