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Books > Professional & Technical > Electronics & communications engineering > Electronics engineering > Applied optics > Laser technology
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Sharp Focusing of Laser Light (Hardcover)
Loot Price: R6,572
Discovery Miles 65 720
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Sharp Focusing of Laser Light (Hardcover)
Expected to ship within 12 - 17 working days
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Readers will learn in which ways light can be "confined" within a
subwavelength region smaller than half a wavelength. Strictly
within the focal spot, all degrees of freedom of light interact and
manifest themselves in a dramatic way. The size and shape of the
focal spot and the magnitude of side-lobes depend on the
polarization state alongside phase and amplitude distributions of a
light beam. Readers will learn techniques in which inhomogeneously
(i.e., azimuthally and radially) polarized optical beams can be
focused. In sharp focus, exotic phenomena can occur, including the
negative propagation of light and a toroidal optical flow.
Throughout the book, the numerical simulation is performed using
the rigorous solution of Maxwell's equations based on a
Finite-Difference Time-Domain (FDTD) approach, which makes the
results of modeling highly reliable. The photonic components,
including optical metasurfaces, discussed in the book have been
implemented using state-of-the-art techniques of electron beam
writing and reactive ion-beam etching of microrelief. Two chapters
are concerned with photonics hot spots, which deal with the control
of light by means of optical metasurfaces and the generation of an
energy backflow in the region of sharp focus of a laser beam.
Another hot topic is diffractive polarization converters
implemented as subwavelength diffraction gratings to convert
polarization of light. By way of illustration, such converters are
shown to perform linear-to-radial or linear-to-azimuthal
polarization conversion. The book describes advanced photonic
components fabricated by the authors to perform sharp focusing of
light, including binary zone plates, binary axicons, a planar
photonic crystal lens, diffraction polarization converters, and
metalenses. This book is a must-have for individuals and
institutions studying cutting edge optics.
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