Cover; Half Title; Title; Copyright; Dedication; Contents; Preface; Chapter 1 Basic Concepts of Stimulated Emission and Lasing in Organic Materials; 1.1 Introduction; 1.2 Electronic Structure; 1.2.1 Energetic Levels; 1.2.2 Primary Excitations; 1.2.3 Electronic Transitions and Relaxation Processes; 1.3 Stimulated Emission and Line Narrowing; 1.4 Optical Gain Measurement: Experimental Setup; 1.5 A More Detailed Analysis of the VSL Method; 1.6 Two Key Parameters: The Threshold Length and the Saturation Length; 1.7 Effects ofWaveguiding in the VSL Method; 1.8 Conclusion.
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2.7 ASE Dependence on the Film Morphology2.7.1 Minimization of the Amplified Spontaneous Emission Threshold by Optimization of the Micromorphology; 2.7.2 Unexpected Composition Dependence of the ASE Properties of Polymer:Polymer Blends-The Case of PF8:F8BT; Chapter 3 State-of-the-Art Active Materials for Organic Lasers; 3.1 Introduction; 3.2 Dyes; 3.2.1 Synthetic Molecules; 3.2.1.1 BODIPYs; 3.2.1.2 Perylenediimides; 3.2.1.3 Xhanthenes; 3.2.1.4 Miscellanea; 3.2.2 Biomolecules; 3.3 Molecular Single Crystals; 3.3.1 Oligomeric Compounds; 3.3.2 Non-oligomeric Molecules.
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3.3.2.1 Excited-state intramolecular proton transfer3.4 Molecular Glasses; 3.4.1 Linear, Branched, and Spiro Compounds; 3.4.2 Star-Shaped Oligomers; 3.5 Conjugated Polymers; 3.5.1 Homopolymers; 3.5.2 Copolymers; 3.6 Hybrid Compounds; 3.7 Final Remarks; Chapter 4 Basic Physics and Recent Developments of Organic Random Lasers; 4.1 Introduction; 4.2 Random Laser; 4.2.1 Random-Laser Materials; 4.2.2 Applications; 4.3 Organic Semiconductor Materials in Random Lasers; 4.4 Patterning Organic Compounds for Random Lasing.
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4.5 Thiophene-Based Compounds: Engineered Random Lasers and Replica Symmetry Breaking4.5.1 Lithographed Random Lasers; 4.5.2 Intensity Fluctuations in Random Lasers; 4.6 Biocompatible and Biologically Inspired Random Lasers; Chapter 5 Cavity-Matter Interaction inWeak- and Strong-Coupling Regime: From White OLEDs to Organic Polariton Lasers; 5.1 Light-Matter Coupling: Classical and Quantum Theory; 5.1.1 A Classical Toy Model; 5.1.2 Optical Resonators: The Case of Optical Microcavity; 5.1.3 Cavity-Exciton Interaction in Weak-Coupling Regime; 5.1.4 Quantum Description of Strong Coupling.
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Chapter 2 Physics Behind Amplified Spontaneous Emission in Organic Active Waveguides2.1 Introduction; 2.2 Waveguide Operation; 2.2.1 Ray Optics; 2.2.2 Wave Optics; 2.3 Understanding the Intrinsic Gain Properties of an Active Material by ASE Measurements; 2.4 Gain Cross Section and ASE Threshold: The Case of Poly(9,9-dioctylfluorene; 2.5 ASE Dependence on theWaveguide Thickness; 2.5.1 ASE Thickness Dependence in Diluted Polystyrene Matrix; 2.5.2 ASE Thickness Dependence in Poly(9,9-dioctylfluorene) Neat Films; 2.6 ASE Dependence on the Molecule Alignment.
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SUMMARY OR ABSTRACT
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"In the past 30 years, organic conjugated molecules received a lot of attention in research because of their unique combination of active properties typical of semiconductors and the technological appeal typical of plastic materials. Among the different applications proposed for organic materials, organic lasers are quickly approaching the performance required for application, while the research on novel active materials is still ongoing. The book presents the current state of the art of the understanding of the physics of optical gain in organic systems and provides a complete description of the most recent advances in organic lasers, including both the structures currently closest to application as well as the fascinating and unconventional systems. The chapters are written by authors with wide experience in the field. The book starts with the basic aspects of the optical gain process and then progressively introduces the most advanced research topics, discussing the state of the art of active material development and the physics and development of fascinating systems for organic lasers, such as random lasers and microcavities in strong coupling, and concludes with a description of the physics and technology of external cavity and distributed feedback lasers. The book is unique that it covers basic aspects, technological aspects, and systems still a subject of basic science research."--Provided by publisher.