Results 221 to 230 of about 17,852 (256)
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Journal of Astrophysics and Astronomy, 1995
Observations of mean or average pulse profiles and their polarization give us much information on the shape of pulsar beams. The observed polarization variations, profile symmetry and frequency dependence of profile shape strongly suggest that the emission beam is conical and emitted from the vicinity of a magnetic pole.
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Observations of mean or average pulse profiles and their polarization give us much information on the shape of pulsar beams. The observed polarization variations, profile symmetry and frequency dependence of profile shape strongly suggest that the emission beam is conical and emitted from the vicinity of a magnetic pole.
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2020
Metasurfaces (MTS) are two-dimensional metamaterials (MTM) that are a periodic composition of thin, subwavelength and periodic inclusions widely known as unit-cells or meta-atoms. Amongst the vast range of research outcomes accomplished so far, there still is keen interest in the further investigation of metasurfaces to be utilized in various unique ...
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Metasurfaces (MTS) are two-dimensional metamaterials (MTM) that are a periodic composition of thin, subwavelength and periodic inclusions widely known as unit-cells or meta-atoms. Amongst the vast range of research outcomes accomplished so far, there still is keen interest in the further investigation of metasurfaces to be utilized in various unique ...
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2014
This chapter is divided in three parts. In the first section, various optical components for beam guiding and beam shaping are presented. In particular, we treat beam deflection, beam splitting, the modulation of polarization, intensity, wavelength and phase. This is followed by a section on beam shaping and focusing of a Gaussian beam.
Axel Donges, Reinhard Noll
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This chapter is divided in three parts. In the first section, various optical components for beam guiding and beam shaping are presented. In particular, we treat beam deflection, beam splitting, the modulation of polarization, intensity, wavelength and phase. This is followed by a section on beam shaping and focusing of a Gaussian beam.
Axel Donges, Reinhard Noll
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2000
Preface Editor Contributors Introduction Todd E. Lizotte and Fred M. Dickey Hitachi Via Mechanics (USA), Inc., Londonderry, New Hampshire and FMD Consulting, LLC, Springfield, Missouri, USA The Mathematical and Physical Theory of Lossless Beam Shaping Louis A. Romero and Fred M.
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Preface Editor Contributors Introduction Todd E. Lizotte and Fred M. Dickey Hitachi Via Mechanics (USA), Inc., Londonderry, New Hampshire and FMD Consulting, LLC, Springfield, Missouri, USA The Mathematical and Physical Theory of Lossless Beam Shaping Louis A. Romero and Fred M.
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2018
Laser Beam Shaping: Theory and Techniques addresses the theory and practice of every important technique for lossless beam shaping. Complete with experimental results as well as guidance on when beam shaping is practical and when each technique is appropriate, the Second Edition is updated to reflect significant developments in the field.
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Laser Beam Shaping: Theory and Techniques addresses the theory and practice of every important technique for lossless beam shaping. Complete with experimental results as well as guidance on when beam shaping is practical and when each technique is appropriate, the Second Edition is updated to reflect significant developments in the field.
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2001
Antennas have a decisive influence on the performance of wireless communication systems: depending on radiation characteristics, antennas differently affect cell coverage, multipath discrimination, and cochannel interference, which directly or indirectly impact on system performance.
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Antennas have a decisive influence on the performance of wireless communication systems: depending on radiation characteristics, antennas differently affect cell coverage, multipath discrimination, and cochannel interference, which directly or indirectly impact on system performance.
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2009
Overview: We have limited most of our discussion throughout the text up to this point to the lowest-order Gaussian-beam wave and its limiting forms leading to a plane wave or spherical wave. In this chapter we want to briefly examine other beam shapes that may have important propagation characteristics for certain applications.
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Overview: We have limited most of our discussion throughout the text up to this point to the lowest-order Gaussian-beam wave and its limiting forms leading to a plane wave or spherical wave. In this chapter we want to briefly examine other beam shapes that may have important propagation characteristics for certain applications.
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Freeform optical design of beam shaping systems with variable illumination properties
Optics Express, 2021Fanqi Shen, Zhanghao Ding, Xiao Tao
exaly