Self-focusing has been an area of active scientific
investigation for nearly 50 years. This book presents a
comprehensive treatment of this topic and reviews both theoretical
and experimental investigations of self-focusing. This book should
be of interest to scientists and engineers working with lasers and
their applications.
From a practical point of view, self-focusing effects impose a
limit on the power that can be transmitted through a material
medium. Self-focusing also can reduce the threshold for the
occurrence of other nonlinear optical processes. Self-focusing
often leads to damage in optical materials and is a limiting factor
in the design of high-power laser systems. But it can be harnessed
for the design of useful devices such as optical power limiters and
switches. At a formal level, the equations for self-focusing are
equivalent to those describing Bose-Einstein condensates and
certain aspects of plasma physics and hydrodynamics. There is thus
a unifying theme between nonlinear optics and these other
disciplines.
One of the goals of this book is to connect the extensive early
literature on self-focusing, filament-ation, self-trapping, and
collapse with more recent studies aimed at issues such as
self-focusing of fs pulses, white light generation, and the
generation of filaments in air with lengths of more than 10 km. It
also describes some modern advances in self-focusing theory
including the influence of beam nonparaxiality on self-focusing
collapse. This book consists of 24 chapters. Among them are three
reprinted key landmark articles published earlier. It also contains
the first publication of the 1964 paper that describes the first
laboratory observation of self-focusing phenomena with photographic
evidence.
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