Optical Shop Testing
... No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, scanning, or otherwise, except as permitted under Section 107 or 108 of the 1976 United States Copyright Act, without either the p ...
... No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, scanning, or otherwise, except as permitted under Section 107 or 108 of the 1976 United States Copyright Act, without either the p ...
Scanning angle total internal reflection Raman spectroscopy and
... where P0 is the incident photon flux, σ Dj is the frequency independent cross section for the jth molecular vibration mode, D is the number density of scatterers, dz is the path length of the laser in the sample and all frequency terms, (ν), are expressed in wavenumbers (cm-1). A full derivation of ...
... where P0 is the incident photon flux, σ Dj is the frequency independent cross section for the jth molecular vibration mode, D is the number density of scatterers, dz is the path length of the laser in the sample and all frequency terms, (ν), are expressed in wavenumbers (cm-1). A full derivation of ...
optical guided waves and devices - Workspace
... possible using similar technology. Similarly, all-fibre polarizers and polarization controllers provide ways of manipulating the polarization state of guided beams. However, although the devices are fabricated using relatively simple equipment, they must generally made individually, so the construct ...
... possible using similar technology. Similarly, all-fibre polarizers and polarization controllers provide ways of manipulating the polarization state of guided beams. However, although the devices are fabricated using relatively simple equipment, they must generally made individually, so the construct ...
Raman microscopy in an electron microscope: combining chemical
... By applying a quite powerful laser system and a large number of molecules in the excitation volume high intensities of Raman scattering can be obtained. In the following chapters we will speak about micro-Raman set up’s which have usually a compact sized laser source. Therefore, large laser excitati ...
... By applying a quite powerful laser system and a large number of molecules in the excitation volume high intensities of Raman scattering can be obtained. In the following chapters we will speak about micro-Raman set up’s which have usually a compact sized laser source. Therefore, large laser excitati ...
Retarder Principles
... From the equations shown on the previous page, a true zeroorder quartz quarter waveplate for 550 nm operation is only 15 mm thick. Such a thin, fragile retarder presents handling difficulties in both fabrication and mounting. More commonly, multiple-order quartz retarders having a whole number of wa ...
... From the equations shown on the previous page, a true zeroorder quartz quarter waveplate for 550 nm operation is only 15 mm thick. Such a thin, fragile retarder presents handling difficulties in both fabrication and mounting. More commonly, multiple-order quartz retarders having a whole number of wa ...
Counterpropagating optical beams and solitons
... mechanism between the beams and its intrinsic nonlocality, and even self-aligning of displaced beams as a possible application. A numerical scheme for treating the system of CP paraxial wave equations was also briefly described. Owing to these reasons, CP solitons assumed a paradigmatic role in the p ...
... mechanism between the beams and its intrinsic nonlocality, and even self-aligning of displaced beams as a possible application. A numerical scheme for treating the system of CP paraxial wave equations was also briefly described. Owing to these reasons, CP solitons assumed a paradigmatic role in the p ...
High Contrast Gratings for Integrated Optoelectronics
... dashed lines), both modes have the same magnitude of the “DC” lateral Fourier component, but opposite phases. (b) Two-mode solution for the field profile (weighted by ej(kosinθ)x) at the HCG exit plane in the case of perfect cancellation. The cancellation is shown to be only in terms of the “DC” Fo ...
... dashed lines), both modes have the same magnitude of the “DC” lateral Fourier component, but opposite phases. (b) Two-mode solution for the field profile (weighted by ej(kosinθ)x) at the HCG exit plane in the case of perfect cancellation. The cancellation is shown to be only in terms of the “DC” Fo ...
sensors Chemical Sensing Using Fiber Cavity Ring-Down Spectroscopy
... largely out of the FBG reflection range its contribution to the signal may be as large as the cavity signal that is nominally also attenuated to 10–6 of the incoming light, if the FBGs are 99.9% reflective (30 dB transmission loss) [28]. Finally, commercially available FBGs are usually designed for ...
... largely out of the FBG reflection range its contribution to the signal may be as large as the cavity signal that is nominally also attenuated to 10–6 of the incoming light, if the FBGs are 99.9% reflective (30 dB transmission loss) [28]. Finally, commercially available FBGs are usually designed for ...
azu_td_9829319_sip1_
... manuscript and there are missing pages, these will be noted. Also, if unauthorized copyright material had to be removed, a note will indicate the deletion. Oversize materials (e.g., maps, drawings, charts) are reproduced by sectioning the original, beginning at the upper left-hand comer and continui ...
... manuscript and there are missing pages, these will be noted. Also, if unauthorized copyright material had to be removed, a note will indicate the deletion. Oversize materials (e.g., maps, drawings, charts) are reproduced by sectioning the original, beginning at the upper left-hand comer and continui ...
CHAPTER 37
... If you divide the original slit into N strips and represent the light from each strip, when it reaches the screen, by a phasor, then at the central maximum in the di raction pattern you add N phasors, all in the same direction and each with the same amplitude. The intensity there is proportional to ...
... If you divide the original slit into N strips and represent the light from each strip, when it reaches the screen, by a phasor, then at the central maximum in the di raction pattern you add N phasors, all in the same direction and each with the same amplitude. The intensity there is proportional to ...
Wavefront Aberration - University of Arizona
... counterclockwise direction, -and the zero angle is along the x axis when looking at the pupil plane from the image plane. This is the definition used for interferogram analysis by many of the computer-aided lens design and wavefront analysis programs. Another common definition that will not be used ...
... counterclockwise direction, -and the zero angle is along the x axis when looking at the pupil plane from the image plane. This is the definition used for interferogram analysis by many of the computer-aided lens design and wavefront analysis programs. Another common definition that will not be used ...
Optical properties scattering - IMT
... phases in the direction of interest due to the often random place-ment of molecular scatterers. ...
... phases in the direction of interest due to the often random place-ment of molecular scatterers. ...
by ZHAOBING TIAN
... Fig. 1.1 Distribution of OFS-18 papers according to application area. ................................... 2 Fig. 1.2 Mach-Zehnder optical fiber interferometer ................................................................ 7 Fig. 1.3 Michelson optical fiber interferometer .......................... ...
... Fig. 1.1 Distribution of OFS-18 papers according to application area. ................................... 2 Fig. 1.2 Mach-Zehnder optical fiber interferometer ................................................................ 7 Fig. 1.3 Michelson optical fiber interferometer .......................... ...
Gain and Loss Factor for Conical Horns, and Impact of Ground
... Horn antennas have been used for over a hundred years. They have a wide variety of uses where they are a basic and popular microwave antenna for many practical applications, such as feed elements for communication reflector dishes on satellite or point-to-point relay antennas. They are also widely u ...
... Horn antennas have been used for over a hundred years. They have a wide variety of uses where they are a basic and popular microwave antenna for many practical applications, such as feed elements for communication reflector dishes on satellite or point-to-point relay antennas. They are also widely u ...
Aalborg Universitet Photonic crystal distributed feedback fiber lasers with Bragg gratings
... in the sense that light is localized to a region near where the refractive index has been decreased relative to the surrounding structure, i.e., a region where an extra air-hole has been introduced. Therefore light is not guided by the principle of total internal reflection but is guided by the phot ...
... in the sense that light is localized to a region near where the refractive index has been decreased relative to the surrounding structure, i.e., a region where an extra air-hole has been introduced. Therefore light is not guided by the principle of total internal reflection but is guided by the phot ...
Graphene Plasmonic Metasurfaces to Steer Infrared Light www.nature.com/scientificreports Zubin Li
... bulk metamaterial counterparts, the quasi-2D metasurfaces exhibit advantages of increased operation bandwidth and reduced losses5,6. These new designs are also compatible with planar, low-cost manufacturing and extremely suitable for device integration. So far, most metasurfaces rely on judiciously ...
... bulk metamaterial counterparts, the quasi-2D metasurfaces exhibit advantages of increased operation bandwidth and reduced losses5,6. These new designs are also compatible with planar, low-cost manufacturing and extremely suitable for device integration. So far, most metasurfaces rely on judiciously ...
11: Waves and Imaging
... fringes are visible. The same principles just discussed may be used to determine the form of interference fringes from wavefronts with other shapes. Some examples will be considered in the following sections. ...
... fringes are visible. The same principles just discussed may be used to determine the form of interference fringes from wavefronts with other shapes. Some examples will be considered in the following sections. ...
Sample pages 1 PDF
... The so-called spectral colors are the purest producible colors. They are characterized by a wavelength width of less than 1 nm (i.e., with a laser). On the other hand, if the radiation contains nearly all wavelengths of the visible spectrum and of equal intensity, the resulting color impression is w ...
... The so-called spectral colors are the purest producible colors. They are characterized by a wavelength width of less than 1 nm (i.e., with a laser). On the other hand, if the radiation contains nearly all wavelengths of the visible spectrum and of equal intensity, the resulting color impression is w ...
00800001a2_9.pdf
... case of so-called TM-polarization the interference term depends on the aperture angle and is proportional to cos (θ) as a consequence of the inner vector product. This means that starting with parallel propagating waves the contrast of the interference pattern decreases with increasing aperture angl ...
... case of so-called TM-polarization the interference term depends on the aperture angle and is proportional to cos (θ) as a consequence of the inner vector product. This means that starting with parallel propagating waves the contrast of the interference pattern decreases with increasing aperture angl ...
engineering of complex optical fields and its
... polarized scattered field. ................................................................................................... 62 Fig. 6-11. The absolute value of the Ez component of the scattered field off the rod ...
... polarized scattered field. ................................................................................................... 62 Fig. 6-11. The absolute value of the Ez component of the scattered field off the rod ...
Analysis And Design Of Wide-angle Foveated Optical
... optimization of fast wide-angle FOSs based on the current transmissive LC SLM technology. The amplitude and phase diffraction effects caused by the pixelated aperture of the SLM are explained and quantified, revealing fundamental limitations imposed by the current transmissive LC SLM technology. As ...
... optimization of fast wide-angle FOSs based on the current transmissive LC SLM technology. The amplitude and phase diffraction effects caused by the pixelated aperture of the SLM are explained and quantified, revealing fundamental limitations imposed by the current transmissive LC SLM technology. As ...
Numerical techniques for Fresnel diffraction in computational
... dynamic monocular cue is motion parallax; the principle through which objects that are further from you appear to have less lateral movement than closer objects. This can be accomplished in 2D by the simple rotation or translation of a scene, and by properly including the parallax effect into the re ...
... dynamic monocular cue is motion parallax; the principle through which objects that are further from you appear to have less lateral movement than closer objects. This can be accomplished in 2D by the simple rotation or translation of a scene, and by properly including the parallax effect into the re ...
Wave optical simulations of x-ray nano
... domain, modern synchrotron sources are different in horizontal and vertical direction. This often is simplified by an elliptical distribution of electrons around their orbit [9,10]. At least in vertical direction “rather coherent” beams can be expected, while in the horizontal direction the degree o ...
... domain, modern synchrotron sources are different in horizontal and vertical direction. This often is simplified by an elliptical distribution of electrons around their orbit [9,10]. At least in vertical direction “rather coherent” beams can be expected, while in the horizontal direction the degree o ...
The Optical Resonator
... § The optical resonator (OR) is the optical counterpart of an electronic resonant circuit: it confines and stores light at certain frequencies. § Most important application: OR as a container within which laser light is ...
... § The optical resonator (OR) is the optical counterpart of an electronic resonant circuit: it confines and stores light at certain frequencies. § Most important application: OR as a container within which laser light is ...
Diffraction grating
In optics, a diffraction grating is an optical component with a periodic structure, which splits and diffracts light into several beams travelling in different directions. The emerging coloration is a form of structural coloration. The directions of these beams depend on the spacing of the grating and the wavelength of the light so that the grating acts as the dispersive element. Because of this, gratings are commonly used in monochromators and spectrometers.For practical applications, gratings generally have ridges or rulings on their surface rather than dark lines. Such gratings can be either transmissive or reflective. Gratings which modulate the phase rather than the amplitude of the incident light are also produced, frequently using holography.The principles of diffraction gratings were discovered by James Gregory, about a year after Newton's prism experiments, initially with items such as bird feathers. The first man-made diffraction grating was made around 1785 by Philadelphia inventor David Rittenhouse, who strung hairs between two finely threaded screws. This was similar to notable German physicist Joseph von Fraunhofer's wire diffraction grating in 1821.Diffraction can create ""rainbow"" colors when illuminated by a wide spectrum (e.g., continuous) light source. The sparkling effects from the closely spaced narrow tracks on optical storage disks such as CD's or DVDs are an example, while the similar rainbow effects caused by thin layers of oil (or gasoline, etc.) on water are not caused by a grating, but rather by interference effects in reflections from the closely spaced transmissive layers (see Examples, below). A grating has parallel lines, while a CD has a spiral of finely-spaced data tracks. Diffraction colors also appear when one looks at a bright point source through a translucent fine-pitch umbrella-fabric covering. Decorative patterned plastic films based on reflective grating patches are very inexpensive, and are commonplace.