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Hachmeister, Henning: A Multimodal Imaging Platform to enable Hyperspectral Coherent Raman Spectroscopy. 2021
Inhalt
Introduction
Theory
Light-matter interactions
Spontaneous Raman scattering
Coherent Raman scattering
Coherent anti-Stokes Raman scattering
Stimulated Raman scattering
Other scattering effects
Optical fibers
Basic working principle of an optical fiber
Nonlinear effects within an optical fiber
Fiber optical elements
Optical setup for coherent Raman imaging
The laser system
Optical parametric oscillator
Acousto-optic modulator
Spatio-temporal overlap of excitation laser beams
Control of the galvanometer scanning mirrors
Detection scheme
Noise reduction approach
Confocal Raman scattering microscope
Commercial Raman scattering system
Custom-built Raman scattering system
Experimental Results
Characterization of the spontaneous Raman scattering microscope
Intracellular lipid analysis of oleaginous microalgae
Introduction
Project outline
Pre-experiments
Analyzing the impact of nitrogen starvation on the formation of lipid droplets
Conclusion
Following stem cell differentiation with label-free imaging techniques
Introduction
Pre-experiments
Following cell differentiation of induced ITSCs
Conclusion
Hyperspectral CARS imaging
Introduction
Effect of varying pulse length on the CARS signal
Computational analysis of hyperspectral data sets
Principal component analysis (PCA)
Non-negative matrix factorization (NNMF)
Applying PCA on ITSC and iPSC data sets
Analyzing the impacts of pollutants on early environmental markers
Project outline
Hyperspectral CARS imaging of nematodes
Conclusion
Following cell differentiation of alveolar epithelium cells with label-free microscopy
Introduction
Pre-experiments
Imaging the evolution of ATI-like cells to ATII-like cells
Resolving intracellular structures through the application of hyperspectral CARS imaging
Conclusion
Compact fiber laser source for coherent Raman scattering
Current state of the art
General outline
Master laser cavity
Stokes branch
Pump branch
Characterizing the laser source performance
Imaging performance of the new laser source
Conclusion
Conclusion
Publications
Acknowledgements
Statutory Declaration