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Chapters 5 - Optoelectronics Research Centre
Chapters 5 - Optoelectronics Research Centre

Lithium Niobate Microphotonic Modulators
Lithium Niobate Microphotonic Modulators

... carrier via the electro-optic effect. The resulting phase-modulated optical signal is converted to amplitude-modulation through the use of a standard Mach-Zehnder configuration. After conversion to the optical domain, the signal is processed using all-optical techniques before downconverting to base ...
Anaerobic phototrophic nitrite oxidation by Thiocapsa
Anaerobic phototrophic nitrite oxidation by Thiocapsa

... conversion factor (OD578 1 equals 250 mg cell mass l21) that was applicable to both strains. Substrate conversion stoichiometries were calculated using the formula C4H7O3 for cell material (Pfennig & Biebl, 1976). Vitamin dependency was tested only for strain KS1 in repeatedly transferred (1 : 10) l ...
Corrosion studies of LiH thin films
Corrosion studies of LiH thin films

... 640 K in the LiH TPD indicates that there is no free Li metal and that the film has fully hydrided. As a result of these observations we conclude that we have successfully synthesised a thin film of high purity LiH, in agreement with the assertion that the single Li KLL emission at 44.8 eV originates ...
applications of optical cavities in modern atomic, molecular
applications of optical cavities in modern atomic, molecular

VOLUME 3 - ICHO 41-45 _opravené_
VOLUME 3 - ICHO 41-45 _opravené_

... If two atoms collide in interstellar space the energy of the resulting molecule is so great that it rapidly dissociates. Hydrogen atoms only react to give stable H2 molecules on the surface of dust particles. The dust particles absorb most of the excess energy and the newly formed H2 rapidly desorbs ...
Particle Detectors in Curved Space Quantum Field Theory
Particle Detectors in Curved Space Quantum Field Theory

... Further, as we shall see, the nature of this coupling between field and device is fundamental to the character of the detector’s response to the field. The Unruh and DeWitt detectors are very similar in that they both couple linearly to the quantum field. It is therefore no surprise that these two ...
Thomson scattering
Thomson scattering

... • The electric and magnetic components of the incident wave accelerate the particle, which in turn emits radiation in all directions. • Phenomenon was first explained by J.J.Thomson. • It can be split into coherent and incoherent scattering (more later). • The experimental application of TS as a dia ...
Adsorption and Reaction of SO2 with a Polycrystalline UO2 Film
Adsorption and Reaction of SO2 with a Polycrystalline UO2 Film

... hazards, and equipment corrosion.15 In industrial applications SO2 is known to poison metal/oxide catalysts. To reduce these negative effects SO2 has to be removed from effluent gases. At present, the most widely used technique is scrubbing, in which solid compounds such as CaCO3 (limestone) are emp ...
master ap chemistry - NelnetSolutions.com
master ap chemistry - NelnetSolutions.com

... information storage and retrieval systems—without the prior written permission of the publisher. For permission to use material from this text or product, complete the Permission Request Form at http://www.petersons.com/permissions. ISBN-13: 978-0-7689-2472-5 ISBN-10: 0-7689-2472-3 Printed in the Un ...
Phonons in III-nitride thinfilms, bulk and nanowires: a closer look into
Phonons in III-nitride thinfilms, bulk and nanowires: a closer look into

... commonly accepted today was given. InN is more difficult to grow than other IIIV nitrides such as GaN because its low dissociation temperature (≈ 630◦ C) and high equilibrium vapour pressure of nitrogen. Due to these difficulties, early InN samples were poorly crystalline and exhibited high free ele ...
INFLUENCES OF THE MOLE RATIO SnO2/NaOH ON THE
INFLUENCES OF THE MOLE RATIO SnO2/NaOH ON THE

... on the basis of oriented aggregation by polar forces. The primary seed of crystal can transform in to SnO2 nanorods by oriented aggregation. Jiggling seed of crystal by the driving force may allow adjacent seed of crystal to construct the low- energy structure, represented by a coherent seed of crys ...
Investigating Naturally Occurring 3
Investigating Naturally Occurring 3

New Approaches to Gyroscopic Lasers
New Approaches to Gyroscopic Lasers

1 - Foundation for Research and Technology
1 - Foundation for Research and Technology

... sample with diameters around 20-30 µm enable extremely strong pumping conditions, for which quantum well (QW) gain is expected. Fortunately, under these intense, essentially continuouswave, pumping conditions, no sample deterioration has been observed. The probe pulses are derived from an optical pa ...
Fused Silica Transmission Gratings
Fused Silica Transmission Gratings

Principles of Fiber Optic Communication
Principles of Fiber Optic Communication

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 ...
polarization effects generated through the
polarization effects generated through the

... There is a growing interest in this research area since radial and azimuthal polarizations have been applied to solve problems related in many optical areas. In optical trapping and optical tweezers, where some particles are considered difficult to trap, the strong axial moment of a highly focused r ...
Hasan, Ahmed and Mohiuddin
Hasan, Ahmed and Mohiuddin

... Fig 2.3: A pulse broadens due to cromatic dispersion Chromatic dispersion may be classified into two different regimes: normal and anomalous. With normal dispersion, the lower frequency components of an optical pulse travel faster than the higher frequency components. The opposite is true with anoma ...
Multiplexed Digital Holography incorporating Speckle
Multiplexed Digital Holography incorporating Speckle

... speckle displacement, we can reconstruct the shape even though the synthetic wavelength is out of the dynamic range of the object. In addition to shape measurement, the measurement of deformation fields is one of the traditional objectives for speckle metrology. There exist two main group of methods ...
Multiple-image digital photography
Multiple-image digital photography

Fundamentals of Light Microscopy and Electronic Imaging
Fundamentals of Light Microscopy and Electronic Imaging

Integrated Opto-Micro uidic Lab-on-a-Chip in
Integrated Opto-Micro uidic Lab-on-a-Chip in

Multinuclear NMR as a tool for studying local order and
Multinuclear NMR as a tool for studying local order and

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Ultraviolet–visible spectroscopy



Ultraviolet–visible spectroscopy or ultraviolet-visible spectrophotometry (UV-Vis or UV/Vis) refers to absorption spectroscopy or reflectance spectroscopy in the ultraviolet-visible spectral region. This means it uses light in the visible and adjacent (near-UV and near-infrared [NIR]) ranges. The absorption or reflectance in the visible range directly affects the perceived color of the chemicals involved. In this region of the electromagnetic spectrum, molecules undergo electronic transitions. This technique is complementary to fluorescence spectroscopy, in that fluorescence deals with transitions from the excited state to the ground state, while absorption measures transitions from the ground state to the excited state.
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