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Optical Science and Engineering ETDs
Publication Date
1-28-2015
Abstract
Advances in high brightness laser sources with near diffraction limited beam quality outputs have enabled wide range of applications. However, physical constraints such as material heating and nonlinear effects limit the maximum achievable power of these laser sources. In order to obtain higher power level, beam combining techniques such as coherent beam combining and spectral beam combining are employed to enhance the power and brightness of a single output beam. In this thesis, we investigate various beam combining approaches using a holographic gratings based beam combiner, volume Bragg gratings, for combining the high brightness lasers sources. First, we theoretically study the performance of the beam combiners using the coupled wave equations. Then we conduct beam combining experimental demonstrations of high brightness fiber lasers in both active and passive coherent beam combining schemes using the proposed combiners. Lastly, we explore beam combining methods suitable for high brightness semiconductor lasers with the volume Bragg gratings beam combiners.
Degree Name
Optical Science and Engineering
Level of Degree
Doctoral
Department Name
Optical Science and Engineering
First Committee Member (Chair)
Diels, Jean-Claude
Second Committee Member
Feezell, Daniel
Third Committee Member
Newell, Timothy
Document Type
Dissertation
Language
English
Recommended Citation
Lu, Chunte. "BEAM COMBINING OF FIBER LASERS AND VERTICAL EXTERNAL CAVITY SURFACE EMITTING LASERS USING VOLUME BRAGG GRATINGS." (2015). https://digitalrepository.unm.edu/ose_etds/21