Laser Filamentation: Mathematical Methods and Models

Front Cover
Andre D. Bandrauk, Emmanuel Lorin, Jerome V. Moloney
Springer, Oct 12, 2015 - Technology & Engineering - 216 pages

This book is focused on the nonlinear theoretical and mathematical problems associated with ultrafast intense laser pulse propagation in gases and in particular, in air. With the aim of understanding the physics of filamentation in gases, solids, the atmosphere, and even biological tissue, specialists in nonlinear optics and filamentation from both physics and mathematics attempt to rigorously derive and analyze relevant non-perturbative models. Modern laser technology allows the generation of ultrafast (few cycle) laser pulses, with intensities exceeding the internal electric field in atoms and molecules (E=5x109 V/cm or intensity I = 3.5 x 1016 Watts/cm2 ). The interaction of such pulses with atoms and molecules leads to new, highly nonlinear nonperturbative regimes, where new physical phenomena, such as High Harmonic Generation (HHG), occur, and from which the shortest (attosecond - the natural time scale of the electron) pulses have been created. One of the major experimental discoveries in this nonlinear nonperturbative regime, Laser Pulse Filamentation, was observed by Mourou and Braun in 1995, as the propagation of pulses over large distances with narrow and intense cones. This observation has led to intensive investigation in physics and applied mathematics of new effects such as self-transformation of these pulses into white light, intensity clamping, and multiple filamentation, as well as to potential applications to wave guide writing, atmospheric remote sensing, lightning guiding, and military long-range weapons.

The increasing power of high performance computers and the mathematical modelling and simulation of photonic systems has enabled many new areas of research. With contributions by theorists and mathematicians, supplemented by active experimentalists who are experts in the field of nonlinear laser molecule interaction and propagation, Laser Filamentation sheds new light on scientific and industrial applications of modern lasers.

 

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Contents

Short Pulse Evolution Equation
1
Derivation Justification and Open Problems Related to Filamentation
19
Blowing Up Solutions to the Zakharov System for Langmuir Waves
76
THz Waveforms and Polarization from Laser Induced Plasmas by FewCycle Pulses
97
Lasing Actions Inside a Femtosecond Laser Filament in Air
121
Filamentation and Pulse Selfcompression in the Anomalous Dispersion Region of Glasses
147
Nonperturbative Nonlinear MaxwellSchrödinger Models for Intense Laser Pulse Propagation
166
Numerical Simulation of UltraShort Laser Pulses
185
Index
214
Copyright

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