Sisay M THESIS - Addis Ababa University Institutional Repository
... to another as a result of random molecular motion [1, 2]. Diffusion also describes the spread of particles through random motion from regions of higher concentration to regions of lower concentration [3, 4]. Diffusion can result from an external force field (forced diffusion) pressure gradients (pre ...
... to another as a result of random molecular motion [1, 2]. Diffusion also describes the spread of particles through random motion from regions of higher concentration to regions of lower concentration [3, 4]. Diffusion can result from an external force field (forced diffusion) pressure gradients (pre ...
Optical Shop Testing
... merchantability or fitness for a particular purpose. No warranty may be created or extended by sales representatives or written sales materials. The advice and strategies contained herein may not be suitable for your situation. You should consult with a professional where appropriate. Neither the pu ...
... merchantability or fitness for a particular purpose. No warranty may be created or extended by sales representatives or written sales materials. The advice and strategies contained herein may not be suitable for your situation. You should consult with a professional where appropriate. Neither the pu ...
Nd:YAG Based Laser Sources for Targeting
... Porro prism resonator is investigated. This perturbation insensitive resonator design is used in laser systems operating over the full military environment of vibration and temperature. A number of aspects of the design are computer modelled with experimental verification, such as the effects of the ...
... Porro prism resonator is investigated. This perturbation insensitive resonator design is used in laser systems operating over the full military environment of vibration and temperature. A number of aspects of the design are computer modelled with experimental verification, such as the effects of the ...
Adaptive Control of Ultrashort Laser Pulses for
... at the begin of his studies in 1874. In 1900 Max Planck discovered that the energy of waves could be described as consisting of small packets or quanta. Subsequent investigations led to the discovery of the quantum nature of electromagnetic waves and the wave-like behaviour of matter—the era of quan ...
... at the begin of his studies in 1874. In 1900 Max Planck discovered that the energy of waves could be described as consisting of small packets or quanta. Subsequent investigations led to the discovery of the quantum nature of electromagnetic waves and the wave-like behaviour of matter—the era of quan ...
CRANFIELD UNIVERSITY Edouard Berrocal MULTIPLE
... use of liquid fuels is not likely to be reduced anytime soon. Liquid fuels must be vaporised within combustion chambers in a manner in which the stoichiometric gas/vapour mixture conditions are satisfied. This is performed by atomizing the injected liquid into the combustion zone and generating fine ...
... use of liquid fuels is not likely to be reduced anytime soon. Liquid fuels must be vaporised within combustion chambers in a manner in which the stoichiometric gas/vapour mixture conditions are satisfied. This is performed by atomizing the injected liquid into the combustion zone and generating fine ...
IOSR Journal of Applied Physics (IOSR-JAP)
... reflection plane of PVA and a more peak at 41.62o indicating the semi-crystalline nature of PVA i.e., presence of crystalline and amorphous regions [14, 15]. This diffraction peak confirmed that, obtained polyvinyl alcohol (PVA) is pure polyvinyl alcohol (PVA) without any other impurities. The XRD p ...
... reflection plane of PVA and a more peak at 41.62o indicating the semi-crystalline nature of PVA i.e., presence of crystalline and amorphous regions [14, 15]. This diffraction peak confirmed that, obtained polyvinyl alcohol (PVA) is pure polyvinyl alcohol (PVA) without any other impurities. The XRD p ...
reflection properties of a gaussian laser beam from multilayer
... A laser microphone is a surveillance device that uses a laser beam to detect sound vibrations in a distant object. The object is typically inside a room where a conversation is taking place, and can be anything that can vibrate (for example, picture or window) in response to the sound waves of the c ...
... A laser microphone is a surveillance device that uses a laser beam to detect sound vibrations in a distant object. The object is typically inside a room where a conversation is taking place, and can be anything that can vibrate (for example, picture or window) in response to the sound waves of the c ...
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 ...
Optical Pumping
... Pumping of the excited state is discussed only insofar as it is necessary for an understanding of the ground. -state pumping. In the first six sections of this paper we review three basic phenomena, optical pumping, light propagation, and relaxation, which are common to most experiments. We have tri ...
... Pumping of the excited state is discussed only insofar as it is necessary for an understanding of the ground. -state pumping. In the first six sections of this paper we review three basic phenomena, optical pumping, light propagation, and relaxation, which are common to most experiments. We have tri ...
New Approaches to Gyroscopic Lasers
... gain medium for the gyroscope. Both neodymium doped and erbium ytterbium co-doped phosphate glass lasers were constructed. Initially linear cavity designs were constructed to test the suitability of the gain media. Both laser systems employed longitudinal laser diode pumping. Thirty six perimeter ri ...
... gain medium for the gyroscope. Both neodymium doped and erbium ytterbium co-doped phosphate glass lasers were constructed. Initially linear cavity designs were constructed to test the suitability of the gain media. Both laser systems employed longitudinal laser diode pumping. Thirty six perimeter ri ...
Narrowband photon pair generation and waveform reshaping
... ton. When induced by a write pulse, atomic spin excitations are produced via spontaneous Raman transition with Stokes photons and corresponding flipped atomic spin states are created. The stored spin wave can be retrieved with a read pulse (or called retrieve pulse), so the atomic spin states produce ...
... ton. When induced by a write pulse, atomic spin excitations are produced via spontaneous Raman transition with Stokes photons and corresponding flipped atomic spin states are created. The stored spin wave can be retrieved with a read pulse (or called retrieve pulse), so the atomic spin states produce ...
Thesis - Georgia Tech
... Electrical and Computer Engineering and Director of the Center for Advanced Processing-tools for Electromagnetic/acoustic Xtals (APEX) for his continuous guidance and support in academics, as well as in all matters. This dissertation would not have been possible without his guidance in identifying t ...
... Electrical and Computer Engineering and Director of the Center for Advanced Processing-tools for Electromagnetic/acoustic Xtals (APEX) for his continuous guidance and support in academics, as well as in all matters. This dissertation would not have been possible without his guidance in identifying t ...
Multistep Parametric Processes in Nonlinear Optics
... the lowest-order nonlinear effects are presented by quadratic nonlinearities, often called χ(2) nonlinearities because they are associated with the second-order contribution (∼ χ(2) E 2 ) to the nonlinear polarization of a medium. Conventionally, the phase-matching conditions for most parametric pro ...
... the lowest-order nonlinear effects are presented by quadratic nonlinearities, often called χ(2) nonlinearities because they are associated with the second-order contribution (∼ χ(2) E 2 ) to the nonlinear polarization of a medium. Conventionally, the phase-matching conditions for most parametric pro ...
Nonlinear Optical Phenomena and Materials
... the nonlinear susceptibi lity was related to the third power of the linear susceptibility by a factor now known as Miller's delta. Whereas nonlinear coefficients of materials span over four orders of magnitude, Miller's delta is constant to within 50%. To the crystal grower and nonlinear materials s ...
... the nonlinear susceptibi lity was related to the third power of the linear susceptibility by a factor now known as Miller's delta. Whereas nonlinear coefficients of materials span over four orders of magnitude, Miller's delta is constant to within 50%. To the crystal grower and nonlinear materials s ...
nonlinear optics in novel periodic media - Deep Blue
... The major focus of the work in this thesis is on the solution of the electromagnetic wave equations in novel structures that exhibit nonlinearity in their response to the incident field. These structures are further characterized by the presence of a spatial periodicity in their dielectric permittiv ...
... The major focus of the work in this thesis is on the solution of the electromagnetic wave equations in novel structures that exhibit nonlinearity in their response to the incident field. These structures are further characterized by the presence of a spatial periodicity in their dielectric permittiv ...
POLITECNICO DI MILANO Polo Regionale di Lecco Faculty of
... Once the state of the art portion of this work reviews the theoretical background and literature, focus is given to specific aim of this work on experimental set up and design in chapter 3. The first part of the experimental work of this thesis is dedicated to investigate the response behaviour of p ...
... Once the state of the art portion of this work reviews the theoretical background and literature, focus is given to specific aim of this work on experimental set up and design in chapter 3. The first part of the experimental work of this thesis is dedicated to investigate the response behaviour of p ...
References
... In Ref.[1] we also provided the exact analytical solution for in the case of gaussian speckles, either deep Fresnel speckles that are produced by a thermal source characterized by a gaussian correlation function, or VCZ speckles produced by a thermal source illuminated by a focused gaussian beam. ...
... In Ref.[1] we also provided the exact analytical solution for in the case of gaussian speckles, either deep Fresnel speckles that are produced by a thermal source characterized by a gaussian correlation function, or VCZ speckles produced by a thermal source illuminated by a focused gaussian beam. ...