Photonics of Quantum-Dot Nanomaterials and Devices : Theory and Modelling

by Hess, Ortwin; Gehrig, Edeltraud

• ISBN13: 9781848165212
• ISBN10: 1848165218
• Format: Hardcover
• Copyright: 2011-09-23
• Publisher: World Scientific Pub Co Inc

Summary

Quantum dot nano structures are interesting for applications in information technology and play a growing role in date storage, medical and biological applications. Understanding quantum nanomaterials is thus the key for the conception and optimization of novel structures. This monograph gives an overview of the theory and introduces the concepts of advanced computational modeling of quantum dot nanomaterials ranging from phenomenological models up to fully quantum theoretical description.

Table of Contents

Introduction to Photonic Quantum Dot Nanomaterials and Devices	p. 1
Physical Properties of Quantum Dots	p. 1
Active Semiconductor Gain Media	p. 2
Quantum Dot Lasers	p. 4
Heterostructure lasers	p. 4
Active nanomaterials	p. 5
Laser Cavities	p. 6
In-plane edge-emitting lasers	p. 7
Vertical-cavity surface-emitting lasers	p. 8
High-power laser amplifiers	p. 9
Coupled-cavity systems	p. 10
Optically excited nano systems	p. 11
QD metastructures	p. 11
References	p. 12
Theory of Quantum Dot Light-Matter Dynamics	p. 15
Rate Equations	p. 19
Maxwell-Bloch Equations	p. 24
Mesoscopic two-level approach	p. 25
Mesoscopic Maxwell-Bloch description of multi-level quantum dot systems	p. 29
Optical field dynamics	p. 30
Carrier dynamics within a quantum dot	p. 34
Quantum Luminescence Equations	p. 38
Quantum Theoretical Description	p. 42
References	p. 43
Light Meets Matter I: Microscopic Carrier Effects and Fundamental Light-Matter Interaction	p. 45
Dynamics in the Active Charge Carrier Plasma	p. 46
Intra-dot carrier scattering	p. 47
Phonon induced carrier scattering between quantum dots and wetting layer	p. 48
Auger scattering processes involving OD and 2D carriers	p. 49
Level and gain dynamics	p. 51
Dynamics of carrier scattering rates	p. 54
Dynamic Level Hole Burning	p. 57
Ultrashort Nonlinear Gain and Index Dynamics	p. 62
Conclusion	p. 69
References	p. 69
Light Meets Matter II: Mesoscopic Space-Time Dynamics	p. 71
Introduction: Transverse and Longitudinal Mode Dynamics	p. 71
Influence of the Transverse Degree of Freedom and Nano-Structuring on Nearfield Dynamics and Spectra	p. 72
Longitudinal Modes	p. 77
Coupled Space-Time Dynamics in the Active Area	p. 78
Influence of injection level and geometry	p. 79
Influence of disorder: the spatially inhomogeneous quantum dot ensemble	p. 83
Light fluctuations and mode competition in quantum dot cavities	p. 86
Conclusion	p. 97
References	p. 97
Performance and Characterisation: Properties on Large Time and Length Scales	p. 101
Introduction	p. 101
Spatial and Spectral Beam Quality	p. 102
Dynamic Amplitude Phase Coupling	p. 105
Conclusion	p. 113
References	p. H3
Nonlinear Pulse Propagation in Semiconductor Quantum Dot Lasers	p. 115
Dynamic Shaping of Short Optical Pulses	p. 116
Nonlinear Femtosecond Dynamics of Ultrashort Light Pulses	p. 118
Self-induced propagation control: tunable propagation speed	p. 118
Propagation control by a second pulse	p. 123
Conclusion	p. 125
References	p. 125
High-Speed Dynamics	p. 127
Mode-Locking in Multi-Section Quantum Dot Lasers	p. 127
Dependence of Pulse Duration on Injection Current, Bias Voltage and Device Geometry	p. 129
Radio Frequency Spectra of the Emitted Light	p. 132
Short-Pulse Optimisation	p. 134
Conclusion	p. 136
References	p. 137
Quantum Dot Random Lasers	p. 139
Spatially Inhomogeneous Semiconductor Quantum Dot Ensembles	p. 139
Gain spectra	p. 141
Spatial and spectral hole burning	p. 142
Coherence Properties	p. 145
Random Lasing in Semiconductor Quantum Dot Ensembles	p. 150
The physics of random lasing	p. 150
Lasers with strong disorder: incoherent feedback	p. 152
Lasers with weak disorder: coherent feedback	p. 155
Conclusion	p. 157
References	p. 157
Coherence Properties of Quantum Dot Micro-Cavity Lasers	p. 159
Introduction	p. 159
Radial Signal Propagation and Coherence Trapping	p. 161
Influence of Disorder	p. 168
Conclusions	p. 170
References	p. 170
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