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Design and Realization of Novel GaAs Based Laser Concepts

Part of the Springer Theses Book Series

DOI: 10.1007/978-3-642-34079-6

ISBN: 978-3-642-34078-9

Publisher: Springer Berlin Heidelberg - Springer Journals

Feb 22, 2013

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Chapter 1Introduction

Germann, Tim David

Pages: 1 –4

[A short introduction on the history of laser development leading to first quantum dot lasers is given. Research goals of this work are motivated and key challenges are identified. Principal achievements are summarized and the outline of this thesis is presented.]
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Chapter 2Semiconductor Laser Concepts

Germann, Tim David

Pages: 5 –15

[Fundamentals of GaAs-based laser designs and the investigated (In)(Ga)As gain media concepts are discussed within this chapter. (Al)GaAs is the material system which is primarily employed for the infrared spectral range. Due to its versatility and ability to form dielectric mirrors for...
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Chapter 3Experimental

Germann, Tim David

Pages: 17 –26

[Employed experimental methods are described with special focus on the requirements of epitaxial process optimization and the basic QD growth process. Advanced designs require the fabrication of numerous calibration and optimization test samples in order to assess distinct material parameters and...
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Chapter 4MOVPE Processes

Germann, Tim David

Pages: 27 –53

[This chapter discusses the influence of individual QD growth parameters and stacking challenges, along with the material quality and doping levels used for laser device growth. Long wavelength InGaAs QD growth process optimization for applications at 1.3μm\documentclass[12pt]{minimal}...
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Chapter 5Edge-Emitting Quantum Dot Lasers

Germann, Tim David

Pages: 55 –79

[Experimental results from the developed edge-emittin laser-diodes using the highly optimized new QD growth process are presented. Complete blue-shift suppression is achieved for long wavelength QDs. Stacks of QD layers emitting at 1.3μm\documentclass[12pt]{minimal} \usepackage{amsmath}...
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Chapter 6High-Power Vertical External-Cavity Surface-Emitting Lasers

Germann, Tim David

Pages: 81 –109

[For the first time, MOVPE grown VECSELs using SMLs and QDs as active media are realized. Results of VECSELs for 950 nm, 1040 nm, and 1210 nm emission wavelengths are presented. QD VECSELs especially benefit from the very broad QD gain spectrum, enabling almost perfect temperature stability...
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Chapter 7Electro-Optically Modulated Vertical-Cavity Surface-Emitting Lasers

Germann, Tim David

Pages: 111 –133

[The realization of an EOM VCSEL for high-speed applications is shown. An in-depth device characterization is presented along with the growth and optimization challenges encountered for this ∼\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym}...
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Chapter 8Summary and Outlook

Germann, Tim David

Pages: 135 –138

[Summary and outlook of the doctoral thesis of Tim David Germann showing key achievements and possibilities for future work.]

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