This book, edited by two of the most respected researchers in plasmonics,  gives an overview of the current state in plasmonics and plasmonic-based metamaterials, with an emphasis on active functionalities and an eye to future developments. This book is multifunctional, useful for newcomers and scientists interested in applications of plasmonics and metamaterials as well as for established researchers in this multidisciplinary area.
Preface xiii
Contributors xvii
1 Spaser, Plasmonic Amplification, and Loss Compensation 1
Mark I. Stockman
1.1 Introduction to Spasers and Spasing 1
1.2 Spaser Fundamentals 2
1.2.1 Brief Overview of the Latest Progress in Spasers 5
1.3 Quantum Theory of Spaser 7
1.3.1 Surface Plasmon Eigenmodes and Their Quantization 7
1.3.2 Quantum Density Matrix Equations (Optical Bloch Equations) for Spaser 9
1.3.3 Equations for CW Regime 11
1.3.4 Spaser operation in CW Mode 15
1.3.5 Spaser as Ultrafast Quantum Nanoamplifier 17
1.3.6 Monostable Spaser as a Nanoamplifier in Transient Regime 18
1.4 Compensation of Loss by Gain and Spasing 22
1.4.1 Introduction to Loss Compensation by Gain 22
1.4.2 Permittivity of Nanoplasmonic Metamaterial 22
1.4.3 Plasmonic Eigenmodes and Effective Resonant Permittivity of Metamaterials 24
1.4.4 Conditions of Loss Compensation by Gain and Spasing 25
1.4.5 Discussion of Spasing and Loss Compensation by Gain 27
1.4.6 Discussion of Published Research on Spasing and Loss Compensations 29
2 Nonlinear Effects in Plasmonic Systems 41