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Books > Professional & Technical > Electronics & communications engineering > Electronics engineering > Microwave technology
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Diffraction Optics of Complex-Structured Periodic Media - Localized Optical Modes of Spiral Media (Hardcover, 2nd ed. 2019)
Loot Price: R4,034
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Diffraction Optics of Complex-Structured Periodic Media - Localized Optical Modes of Spiral Media (Hardcover, 2nd ed. 2019)
Series: Springer Series in Optical Sciences, 203
Expected to ship within 18 - 22 working days
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This book presents recent theoretical and experimental results of
localized optical modes and low-threshold lasing in spiral photonic
media. Efficient applications of localized modes for low-threshold
lasing at the frequencies of localized modes are a central topic of
the book's new chapters. Attention is paid to the analytical
approach to the problem. The book focuses on one of the most
extensively studied media in this field, cholesteric liquid
crystals. The chosen model, in the absence of dielectric
interfaces, allows to remove the problem of polarization mixing at
surfaces, layers and defect structures. It allows to reduce the
corresponding equations to the equations for light of diffracting
polarization only. The problem concentrates then on the edge and
defect optical modes. The possibility to reduce the lasing
threshold due to an anomalously strong absorption effect is
presented theoretically for distributed feedback lasing. It is
shown that a minimum of the threshold-pumping wave intensity can be
reached for the pumping wave frequency coinciding with the
localized mode frequency (what can be reached for a pumping wave
propagating at a certain angle to the helical axes). Analytic
expressions for transmission and reflection coefficients are
presented. In the present second edition, experimental observations
of theoretically revealed phenomena in spiral photonic media are
discussed. The main results obtained for spiral media are
qualitatively valid for photonic crystals of any nature and
therefore may be applied as a guide to investigations of other
photonic crystals where the corresponding theory is more
complicated and demands a numerical approach. It is demonstrated
that many optical phenomena occurring at the frequencies of
localized modes reveal unusual properties which can be used for
efficient applications of the corresponding phenomena, efficient
frequency conversion and low threshold lasing, e.g. For the
convenience of the reader, an introduction is given to conventional
linear and nonlinear optics of structured periodic media. This book
is valuable to researchers, postgraduate, and graduate students
active in theoretical and experimental physics in the field of
interaction of radiation with condensed matter.
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