Analysis of Spatio-Temporal Phenomena in High-Brightness Diode Lasers using Numerical Simulations.

Intro -- Abstract -- Kurzfassung -- Contents -- Chapter 1 Introduction and Background -- Chapter 2 Optical field model -- 2.1 The traveling-wave equations -- 2.2 Balance of radiative energy -- 2.3 Effective longitudinal-lateral projected equations -- 2.4 Retrieval of real device characteristics -- 2.5 Summary -- Chapter 3 Carrier transport model -- 3.1 Basic drift-diffusion model -- 3.2 Reduction to effective diffusion equation andmodels for the injection current -- 3.2.1 Carrier transport in the active region -- 3.2.2 Models for the injection current density -- 3.3 Summary -- Chapter 4Heat model -- 4.1 Basic equations -- 4.2 Approximate equations for the heat source density -- 4.2.1 Treatment of spontaneous emission -- 4.2.2 Impact of vanishing thermoelectric effects on the heatgeneratio -- 4.2.3 Heat sources for the longitudinal-lateral approximateequations -- 4.3 Energy conservation -- 4.4 Treatment of pulsed operation (no-heat-flow approximation) -- 4.4.1 Experimental validation -- 4.5 Treatment of continuous-wave operation -- 4.6 Summary -- Chapter 5 Power saturation under short pulseoperation -- 5.1 Spatial hole burning, current spreading,two-photon absorption and gain compression -- 5.2 Impact of spatio-temporal power variations -- 5.3 Estimation of additional effects not included inthe model -- 5.4 Conclusions -- Chapter 6Factors influencing the lateral fieldprofile -- 6.1 Modulation instability induced by Kerr nonlinearities -- 6.1.1 Bespalov Talanov modulation instability -- 6.1.2 Instabilities induced by the optical material Kerr effect -- 6.1.3 Instabilities induced by spatial hole burning -- 6.1.4 Conclusions -- 6.2 Multi-mode lasing -- 6.3 Nonthermal effects -- 6.3.1 Nonthermal far-field blooming -- 6.3.2 Differential index (αH-factor) -- 6.3.3 Lateral carrier distribution in the active region -- 6.3.4 Conclusions.

6.4 Thermal waveguiding effects -- 6.4.1 Short-pulse operation -- 6.4.2 Continuous-wave operation -- 6.4.3 Conclusions -- Chapter 7 Improvement of the lateralbrightness -- 7.1 Index guiding trenches and implantation -- 7.2 Contact structuring -- 7.2.1 Coherently coupled laser arrays -- 7.2.2 Talbot lasers -- 7.2.3 Chessboard lasers -- 7.2.4 Conclusions -- Chapter 8Summary and outlook -- Appendix A Simulation parameters -- Appendix B Nonlinear susceptibility -- Appendix C The Fermi integral F1/2 -- Appendix DNumerical schemes -- D.1 Traveling wave and carrier rate equations -- D.1.1 Split step Fourier method for solution of traveling waveequations -- D.1.2 Finite difference scheme for solution of carrier rate equations -- D.1.3 Parallelization -- D.2.2 Heat transport solver -- Bibliography.

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Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, 2024. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries.