Gaussian Beam Propagation
... beam propagation in some detail, and several comprehensive review articles are available. However, for millimeter and submillimeter wavelength systems there are naturally certain aspects that deserve special attention, and we emphasize aspects of quasioptical propagation that have proven to be of gr ...
... beam propagation in some detail, and several comprehensive review articles are available. However, for millimeter and submillimeter wavelength systems there are naturally certain aspects that deserve special attention, and we emphasize aspects of quasioptical propagation that have proven to be of gr ...
Enhancement of image quality and imaging depth with Airy light
... to extract anatomical-projection information (often spanning multiple brain areas) and activity patterns from multiple neurons with high temporal and spatial resolution. While imaging fairly transparent specimens such as a zebrafish brain is achievable using current LSM systems [2], the ability to i ...
... to extract anatomical-projection information (often spanning multiple brain areas) and activity patterns from multiple neurons with high temporal and spatial resolution. While imaging fairly transparent specimens such as a zebrafish brain is achievable using current LSM systems [2], the ability to i ...
15. Atmospheric Channel Effects and the Impact on
... Different weather conditions can also cause variations of the atmospheric loss by several orders of magnitude. Usually all weather phenomena (and thus also cloud coverage) happen inside the troposphere, which extends up to a height of 11 km. In reference [4] the maximum cirrus altitude is given with ...
... Different weather conditions can also cause variations of the atmospheric loss by several orders of magnitude. Usually all weather phenomena (and thus also cloud coverage) happen inside the troposphere, which extends up to a height of 11 km. In reference [4] the maximum cirrus altitude is given with ...
Bessel beams: diffraction in a new light
... indeed appealing from the viewpoint of numerous applications including atom optics and medical imaging. This paper deals with the topic of Bessel light beams. Such beams appear to offer some immunity to diffraction and thus are potentially an attractive alternative to using Gaussian beams in a number ...
... indeed appealing from the viewpoint of numerous applications including atom optics and medical imaging. This paper deals with the topic of Bessel light beams. Such beams appear to offer some immunity to diffraction and thus are potentially an attractive alternative to using Gaussian beams in a number ...
HERE - Washington
... refraction the changing of a wave’s speed and direction as it travels into a medium (SRB, IG) research looking for work that may already have been done (IG) resolution the clarity of detail in an image (SRB, IG) reverberation the collection of closely spaced sound reflections off many surfaces (SRB ...
... refraction the changing of a wave’s speed and direction as it travels into a medium (SRB, IG) research looking for work that may already have been done (IG) resolution the clarity of detail in an image (SRB, IG) reverberation the collection of closely spaced sound reflections off many surfaces (SRB ...
Metamaterial Electromagnetic Wave Absorbers
... well as provides a critique of the work in progress and applications that have arisen or may arise from these studies. The motivation for studying MPAs comes mainly from their use in potential applications. These applications will be discussed more thoroughly in Section 6 but briefly include: emitte ...
... well as provides a critique of the work in progress and applications that have arisen or may arise from these studies. The motivation for studying MPAs comes mainly from their use in potential applications. These applications will be discussed more thoroughly in Section 6 but briefly include: emitte ...
Laser cooling and trapping of atoms
... laser cooling. One of the characteristics of optical control of atomic motion is that the speed of atoms can be considerably reduced. Since the spread of velocities of a sample of atoms is directly related to its temperature, the field has been dubbed laser cooling, and this name has persisted throug ...
... laser cooling. One of the characteristics of optical control of atomic motion is that the speed of atoms can be considerably reduced. Since the spread of velocities of a sample of atoms is directly related to its temperature, the field has been dubbed laser cooling, and this name has persisted throug ...
Non Gravitational Black Holes
... Analogue models have been constructed in several branches of physics. It deals with acoustics [2,8-18], optics [1927], among others [28-35]. These are only representative ...
... Analogue models have been constructed in several branches of physics. It deals with acoustics [2,8-18], optics [1927], among others [28-35]. These are only representative ...
Partially coherent beam shaping and imaging
... pulses have non-identical wave forms. Optical coherence theory of stationary [1–4] and non-stationary [5–7] fields describes correlations between field fluctuations at two (or more) points in the spatial, angular, temporal, or spectral regime, and forms the basis of the work reported in this thesis. ...
... pulses have non-identical wave forms. Optical coherence theory of stationary [1–4] and non-stationary [5–7] fields describes correlations between field fluctuations at two (or more) points in the spatial, angular, temporal, or spectral regime, and forms the basis of the work reported in this thesis. ...
Femtosecond spectroscopy of solid hydrogen - diss.fu
... This thesis, settled within the framework of the SfB 450 ‘Analysis and control of ultrafast photoinduced reactions’, focuses on rotational alignment dynamics in the solid phase. The first direct observation of long lived ultrafast coherences in solid hydrogen is reported and an extended approach to ...
... This thesis, settled within the framework of the SfB 450 ‘Analysis and control of ultrafast photoinduced reactions’, focuses on rotational alignment dynamics in the solid phase. The first direct observation of long lived ultrafast coherences in solid hydrogen is reported and an extended approach to ...
surface topology reconstruction from the white light interferogram by
... Equation (1) is non-linear and non-algebraic; hence, it has no analytical solution. The simplest method to obtain the desired value T is to determine the complete phase Ф(T) of the interferogram carrier. However, it requires simultaneous minimisation of the envelope effect on the accuracy of results ...
... Equation (1) is non-linear and non-algebraic; hence, it has no analytical solution. The simplest method to obtain the desired value T is to determine the complete phase Ф(T) of the interferogram carrier. However, it requires simultaneous minimisation of the envelope effect on the accuracy of results ...
Structural, Optical, Electrical and Thermal Characterizations of Pure
... electro-optic modulator, harmonic generators and parametric generators [1]. In the last decade the numerous applications of the nonlinear optical (NLO) crystals have been discussed in the field of science and technology [2-7]. But recent interest is focused on the development of the properties of th ...
... electro-optic modulator, harmonic generators and parametric generators [1]. In the last decade the numerous applications of the nonlinear optical (NLO) crystals have been discussed in the field of science and technology [2-7]. But recent interest is focused on the development of the properties of th ...
Investigation of positive and negative modes of nanosecond pulsed
... elongated along the direction of the electric field lines [10]. These voids provide sufficiently long pathways within which electrons can gain sufficient energy from the applied electric field to cause ionization. The rapidly rising voltage front is necessary so that the electrostriction conditions ...
... elongated along the direction of the electric field lines [10]. These voids provide sufficiently long pathways within which electrons can gain sufficient energy from the applied electric field to cause ionization. The rapidly rising voltage front is necessary so that the electrostriction conditions ...
Broadband mode conversion via gradient index
... are referred as the gradient factors of the upper and lower GIMs, respectively. We will show that the mode conversion effect can be tuned by adjusting the values of g1 and g2 as well as the working frequencies. The difference between g1 and g2 is crucial for mode conversion. A classical geometric op ...
... are referred as the gradient factors of the upper and lower GIMs, respectively. We will show that the mode conversion effect can be tuned by adjusting the values of g1 and g2 as well as the working frequencies. The difference between g1 and g2 is crucial for mode conversion. A classical geometric op ...
Tailoring single-photon and multiphoton
... These basic concepts could be used to produce higherorder photon number states as well. By using detectors with the capability of sensing the number of photons in a single pulse, the switching circuit could just as well direct the outputs of those converters that produced multiple-photon pairs to th ...
... These basic concepts could be used to produce higherorder photon number states as well. By using detectors with the capability of sensing the number of photons in a single pulse, the switching circuit could just as well direct the outputs of those converters that produced multiple-photon pairs to th ...
Transformational Plasmon Optics Yongmin Liu, Thomas Zentgraf, Guy Bartal,
... devices varies from case to case, the methodology of TO is general. First, we distort part of the homogeneous isotropic space in some manner that can be tracked by a certain coordinate transformation. Second, we derive from the particular transformation the permittivity and permeability distribution ...
... devices varies from case to case, the methodology of TO is general. First, we distort part of the homogeneous isotropic space in some manner that can be tracked by a certain coordinate transformation. Second, we derive from the particular transformation the permittivity and permeability distribution ...
Transformational Plasmon Optics Yongmin Liu, Thomas Zentgraf, Guy Bartal,
... devices varies from case to case, the methodology of TO is general. First, we distort part of the homogeneous isotropic space in some manner that can be tracked by a certain coordinate transformation. Second, we derive from the particular transformation the permittivity and permeability distribution ...
... devices varies from case to case, the methodology of TO is general. First, we distort part of the homogeneous isotropic space in some manner that can be tracked by a certain coordinate transformation. Second, we derive from the particular transformation the permittivity and permeability distribution ...
Characterization of proton-exchanged waveguides in
... the undoped material for proton-exchanged waveguides.1 0 Further tests are now under way to improve the power tolerance of the waveguides. In conclusion, we have characterized the parameters of proton-exchanged waveguides in high-damagethreshold MgO:LiNbO3 and have compared these with waveguides mad ...
... the undoped material for proton-exchanged waveguides.1 0 Further tests are now under way to improve the power tolerance of the waveguides. In conclusion, we have characterized the parameters of proton-exchanged waveguides in high-damagethreshold MgO:LiNbO3 and have compared these with waveguides mad ...
Various Indoor OFDM Optical Wireless Communication Systems and
... to cope with severe channel conditions. The low symbol rate makes the use of a guard interval between symbols affordable. Thus it is possible to eliminate Inter Symbol Interference(ISI). It is a form of distortion of a signal in which one symbol interferes with subsequent symbols. There are two diff ...
... to cope with severe channel conditions. The low symbol rate makes the use of a guard interval between symbols affordable. Thus it is possible to eliminate Inter Symbol Interference(ISI). It is a form of distortion of a signal in which one symbol interferes with subsequent symbols. There are two diff ...