Abstract
Four years after the first demonstration of Light Amplification by Stimulated Emission of Radiation in a Ruby crystal by Theodore Maiman in 1960, C. J. Koester and E. Snitzer transferred this new and groundbreaking laser concept to Neodymium doped glass waveguides and paved the way for modern fiber lasers. The prediction of low loss optical fibers for long-distance optical communication by C. Kao in 1966 and the first demonstration of a fiber with only 20 dB/km loss by Corning laboratories in 1973 triggered major R&D investments in the second half of the 20th century. The development of specialty optical fibers was facilitated by the introduction of the stack-and-draw fiber manufacturing technique, which enabled the fabrication of more complex fiber structures and expanded the application space of optical fiber technology. This dissertation is divided into four chapters. The first chapter provides a short review of the history of optical fibers and their application in fiber laser systems as well as an outline of this dissertation. In the second chapter, Ytterbium based single mode high average power fiber amplifiers and their average power limitations are discussed. In particular, the concept of spatially confining the gain to certain regions of the fiber's core is discussed in detail as one strategy to overcome some of these limitations. Furthermore, the development of a narrow line width high power fiber laser system is discussed. The third chapter discusses the potential of disordered glass-air Anderson localization fiber for broad band super continuum generation and the fourth chapter discusses the pulse energy scaling potential of Ytterbium doped multicore fiber saturable absorbers for ultrafast fiber oscillators.
Notes
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Graduation Date
2021
Semester
Fall
Advisor
Schulzgen, Axel
Degree
Doctor of Philosophy (Ph.D.)
College
College of Optics and Photonics
Department
Optics and Photonics
Degree Program
Optics and Photonics
Format
application/pdf
Identifier
CFE0008837; DP0026116
URL
https://purls.library.ucf.edu/go/DP0026116
Language
English
Release Date
December 2026
Length of Campus-only Access
5 years
Access Status
Doctoral Dissertation (Campus-only Access)
STARS Citation
Gausmann, Stefan, "Specialty Optical Fibers and Their Applications in Fiber Laser Systems" (2021). Electronic Theses and Dissertations, 2020-2023. 866.
https://stars.library.ucf.edu/etd2020/866
Restricted to the UCF community until December 2026; it will then be open access.