光脉冲宽度压缩技术的飞速发展导致超强超短光脉冲的出现。这种极高强度的超短脉冲在某些物质中传播时，出现了大量新的非同寻常的效应。例如：具有反演中心的物质中产生了相当强的二次谐波；气体中出现高转换效率的非常高阶的谐波，可用来获得阿秒电磁脉冲或脉冲串。这些都与传统非线性光学理论的推断不一致，人们将其归到极端非线性光学的范畴。实际上，极端非线性光学的内容与诸多领域有关，其中包括固态物理，原子物理，真空里的相对论自由电子，甚至真空本身。韦格纳编著的《极端非线性光学（影印版）》写法深入浅出。书中前面的章节从普通物理教课书中的两个著名模型（即洛伦兹振子模型和Drude模型）出发，将其推广作为本书基础。书中给出许多图示和范例，叙述的水平可以为每一位大学本科物理系学生接受。以后的章节逐步引入近代最新的进展，并提供对这一领域的透彻的概述。每一章都提供一些练习题，用来加深读者对重要课题的理解。书末给出了习题的详细解答。

《极端非线性光学（影印版）》为国外物理名著系列之一，由韦格纳编著。

《极端非线性光学（影印版）》内容简介：Following the birth of the laser in 1960, the field of "nonlinear optics" rapidly emerged.Today, laser intensities and pulse durations are readily available, for which the concepts and approximations of traditional nonlinear optics no longer apply.In this regime of "extreme nonlinear optics," a large variety of novel and unusual effects arise, for example frequency doubling in inversion symmetric materials or high-harmonic generation in gases, which can lead to attosecond electromagnetic pulses or pulse trains.Other examples of "extreme nonlinear optics" cover diverse areas such as solid-state physics, atomic physics, relativistic free electrons in a vacuum and even the vacuum itself.This book starts with an introduction to the field based primarily on extensions of two famous textbook examples, namely the Lorentz oscillator model and the Drude model.Here the level of sophistication should be accessible to any undergraduate physics student.Many graphical illustrations and examples are given.The following chapters gradually guide the student towards the current "state of the art" and provide a comprehensive overview of the field.Every chapter is accompanied by exercises to deepen the reader's understanding of important topics, with detailed solutions at the end of the book.

1 Introduction

 1.1 "Traditional" Nonlinear Optics - Extreme Nonlinear Optics

 1.2 How to Read this Book?

2 Selected Aspects of Few-Cycle Laser Pulses and Nonlinear Optics

 2.1 Maxwell Equations

 2.2 The Light Intensity

 2.3 Electric Field in a Laser Resonator

 2.4 A Brief Look at Phenomenological Nonlinear Optics

 2.5 Even-Harmonic Generation and Inversion Symmetry

 2.6 Principle of Measuring the Carrier-Envelope Frequency

3 The Lorentz Oscillator Model and Beyond

 3.1 Linear Optics: Revisiting the Lorentz Oscillator Model

 3.2 Two-Level Systems andRabi Energy

 3.3 Carrier-Wave Rabi Flopping

 3.4 Frequency Doubling with Inversion Symmetry

 3.5 Quantum Interference of Multiphoton Absorption

 3.6 High Harmonics from Two-Level Systems

3.6.1 The "Static-Field Approximation"

3.6.2 The "Square-Wave Approximation"

3.6.3 The Dressed Two-Level System: Floquet States

4 The Drude Free-Electron Model and Beyond

 4.1 Linear Optics: The Drude Model

 4.2 Electron Wave Packets Driven by Light

4.2.1 Semiclassical Considerations

4.2.2 Quantum-Mechanical Treatment: Dressed Electrons

 4.3 Crystal Electrons

4.3.1 Static-Field Case

4.3.2 High Harmonics from Carrier-Wave Bloch Oscillations

 4.4 Extreme Nonlinear Optics of Relativistic Electrons

4.4.1 Second-Harmonic Generation and Photon Drag

4.4.2 Nonperturbative Regime

 4.5 Extreme Nonlinear Optics of Dirac Electrons

 4.6 Unruh Radiation

5 Lorentz Becomes Drude: Bound-Unbound Transitions

 5.1 High-Harmonic Generation: Phenomenological Approach

 5.2 The Keldysh Parameter

 5.3 Field Ionization of Atoms

 5.4 High-Harmonic Generation

5.4.1 Three-Step Scenario and Cutoff

 5.5 Application to Photoemission from Metal Surfaces

6 Accounting for Propagation Effects

 6.1 Numerical Solution of the Nonlinear Maxwell Equations

 6.2 Slowly Varying Envelope Approximation

 6.3 Gouy Phase and Carrier-Envelope Phase

 6.4 Reshaping of the Amplitude Spectrum

7 Extreme Nonlinear Optics of Semiconductors and Isolators

 7.1 Carrier-Wave Rabi Flopping

7.1.1 Experiment

7.1.2 Theory

7.1.3 Dependence on the Cartier-Envelope Phase

7.1.4 Semiconductor Bloch Equations

 7.2 "THG in the Disguise of SHG".

 7.3 Dynamic Franz-Keldysh Effect

 7.4 Photon Drag or Dynamic Hall Effect

 7.5 Conical Second-Harmonic Generation

8 Extreme Nonlinear Optics of Atoms and Electrons

 8.1 High-Harmonic Generation From Atoms

8.1.1 Gas Jets

8.1.2 Hollow Waveguides

8.1.3 Quasi Phase-Matching in Modulated Capillaries

8.1.4 Dependence on the Carrier-Envelope Phase

 8.2 Relativistic Nonlinear Thomson Scattering

Solutions

Symbols

References

Index