• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Non-Collinear Second Harmonic Generation in
Non-Collinear Second Harmonic Generation in

... nonlinear effects are too small. For known materials the time constants, their long-term stability or other properties are not sufficient and thus often the demands of light intensity or power are too high. Thus the field of nonlinear interactions is still in rapid progress and new applications with ...
“ waves, yielding a resultant irradiance that may deviate from the... component irradiances. r
“ waves, yielding a resultant irradiance that may deviate from the... component irradiances. r

downhole enthalpy measurement in geothermal wells with fiber optics
downhole enthalpy measurement in geothermal wells with fiber optics

... enthalpy. There are several well-known methods that can be used for continuous phase velocity measurements in two-phase flow, like hot-film anemometry. Therefore, in this study we concentrated on measuring only void fraction and the dispersed-phase velocity. ...
Continuous-variable optical quantum-state tomography
Continuous-variable optical quantum-state tomography

... The bipartite entanglement is of the order 兩␧2 log共␧兲兩, which is much less than 1. Equations 共5兲 and 共6兲 reveal a significant limitation of the photon-counting approach. This method works well if it is a priori known that the modes involved are in one of the qubit basis states or their linear combin ...
thesis
thesis

Quasi Phase Matching Devices for Optical
Quasi Phase Matching Devices for Optical

... based on a spatial modulation of the nonlinear properties along the interaction path in the material. Such a spatial modulation can be obtained in ferroelectric crystals by periodically altering the crystal orientation so that the effective nonlinearity changes according to the orientation. In fiber ...
ELEC425 lab 5
ELEC425 lab 5

D1619
D1619

Chapter 2 Introduction to Waveguide and Bragg Grating Theory 2.1
Chapter 2 Introduction to Waveguide and Bragg Grating Theory 2.1

... Thus there are two similar solutions for electric and magnetic fields that can propagate through the slab structure of figure 2.2. These solutions are referred to as the modes of the waveguide and are field distributions that are supported by the system that can propagate such that the transverse fi ...
guide to thin section microscopy - Mineralogical Society of America
guide to thin section microscopy - Mineralogical Society of America

... The microscopic investigation of materials such as minerals, rocks, ores, technical and other synthetic products in transmitted and reflected light remains one of the classic, and to this day indispensable, mineralogical methods of analysis. Polarized-light microscopy provides a nondestructive way t ...
fabrication, characterization and application of dispersive gradient
fabrication, characterization and application of dispersive gradient

... became a universal tool to make not only scientific research but were also used in industrial, medical and other applications. Pulses exceeding several optical cycles were used to monitor molecular dynamics, to make the micromachining of various materials [4]. One of the main characteristics of the ...
Applied Optoelectronics in Medicine
Applied Optoelectronics in Medicine

... Scriptum AOM: Applied Optoelectronics in Medicine ...
[pdf]
[pdf]

... Before proceeding, we specify the following notation convention: All background quantities outside the sphere are denoted by subscript 1, e.g., f1, k1, D1, and all quantities inside the sphere are denoted by subscript 2, e.g., f2, k2, D2. Furthermore all fluorescence-related quantities are denoted b ...
Attosecond lighthouse driven by sub-two
Attosecond lighthouse driven by sub-two

... distribution of beamlets (vertical axis) plotted for different values of CEP (horizontal axis). To obtain the figure, the spectrum was integrated from 45 to 50 eV (color code) at each spatial position. The data is shown for N2 as a function of the CEP phase which was scanned at ∼6 mrad per step (shot ...
Abstract :soliton order N=1 and N=2 results are also obtained
Abstract :soliton order N=1 and N=2 results are also obtained

... described two solitons with orthogonal polarizations as vector solitons which co-propagate together while retaining their shapes and without dispersing their energy [9].Xiupu Zhang (et.al) (1998) investigated thebroadening of solitons in the presence of polarization-mode dispersion. He also suggeste ...
Polarization of Light - University of Hawaii
Polarization of Light - University of Hawaii

... • 19th century: unsuccessful attempts to describe unpolarized light in terms of amplitudes • 1852: Sir George Gabriel Stokes took a very different approach and discovered that polarization can be described in terms of observables using an experimental definition N. Manset / CFHT ...
Optical Methods for Tympanic Membrane Characterisation Towards Objective Otoscopy in Otitis Media
Optical Methods for Tympanic Membrane Characterisation Towards Objective Otoscopy in Otitis Media

... measurement, given that variations in measurement distance were accounted for and that measurement from normally positioned tympanic membranes were used for signal normalization. In conclusion, the studies implicate that for individual otitis diagnosis, the hyperaemic tympanic membrane was separated ...
Ohmic Contacts With Ultra-Low Optical Loss on Heavily Doped n
Ohmic Contacts With Ultra-Low Optical Loss on Heavily Doped n

... The calculated refractive indices of InGaAs and Q1.25 are plotted in Fig. 1(b). Both of them reduce at the high doping range. Experimental data on n-InGaAs can be found in [21]. Our samples are characterized using spectroscopic ellipsometry [22], giving refractive indices of 3.51 and 3.20 for n-InGa ...
Development of a high precision interferometric set-up for the
Development of a high precision interferometric set-up for the

... major limitation in optical transmission systems in general, and an ultimate limitation for ultra-high speed single channel systems based on standard single mode fibers. In the future, the PMD obstacle could be ultimately solved by using polarization maintaining fibers and polarizers [5]. Dispersion ...
Vertical-Cavity Surface-Emitting Lasers: Advanced
Vertical-Cavity Surface-Emitting Lasers: Advanced

... This thesis expands the state-of-the-art in coherent detection for optical fiber access networks employing vertical-cavity surface-emitting lasers (VCSELs) as light sources. Bit rates up to 10 Gb/s over 25 km single-mode fibre (SMF) transmission distance have been achieved supporting a passive optic ...
OTDR DISTRIBUTED SENSING OF LIQUID HYDROCARBONS
OTDR DISTRIBUTED SENSING OF LIQUID HYDROCARBONS

NRC Publications Archive Archives des publications du CNRC
NRC Publications Archive Archives des publications du CNRC

... As shown in Appendix A, D rel can be interpreted as a factor which expresses how many times quicker the visibility in an enclosure will be reduced to a certain level. if, under testing conditions, smoke is produced by the test specimen instead of by the reference wood. The relative time required to ...
PDF - Photonics Research Group
PDF - Photonics Research Group

... devices with small volume, low power consumption and high bandwidth [3]. On the other hand, developments of new processing technologies are necessary for these novel membrane based high-performance devices. Ohmic contacts on top of the membrane is one of the technologies that need to be optimized fo ...
FIBER OPTICS
FIBER OPTICS

... waveguide with a distinct propagation constant and group velocity, maintaining its transverse spatial distribution and its polarization. In planar waveguides, we found that each mode was the sum of the multiple reflections of a TEM wave bouncing within the slab in the direction of an optical ray at ...
Measuring the spatiotemporal electric field of
Measuring the spatiotemporal electric field of

... then this phase can be subtracted out from all subsequent measurements. In principle, the phase difference in the interferometer as a function of xc and ␻ can be measured so that any spatial phase difference introduced by the interferometer is also removed. In practice, because an interferometer onl ...
< 1 ... 13 14 15 16 17 18 19 20 21 ... 212 >

Harold Hopkins (physicist)

Harold Horace Hopkins FRS (1918–1994) was a renowned British physicist. His Wave Theory of Aberrations, (published by Oxford University Press 1950), is central to all modern optical design and provides the mathematical analysis which enables the use of computers to create the wealth of high quality lenses available today. In addition to his theoretical work, his many inventions are in daily use throughout the world. These include zoom lenses, coherent fibre-optics and more recently the rod-lens endoscopes which 'opened the door' to modern key-hole surgery. He was the recipient of many of the world's most prestigious awards and was twice nominated for a Nobel Prize. His citation on receiving the Rumford Medal from the Royal Society in 1984 stated: ""In recognition of his many contributions to the theory and design of optical instruments, especially of a wide variety of important new medical instruments which have made a major contribution to clinical diagnosis and surgery.""
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report