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Showing 1 to 13 of 13 for “"coherent anti-Stokes Raman scattering (CARS)"”.
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Laser diagnostic investigation of the structure of steady and driven hydrogen jet diffusion flames
… jet diffusion flames has been investigated using coherent anti-Stokes Raman scattering (CARS) and laser-induced fluorescence (LIF) to obtain temperature and nitric oxide (NO) concentrations in steady laminar flames and during the interaction of induced fuel-side vortices with the diffusion flame …
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Polarization Controlled Coherent Anti-Stokes Raman Scattering Microscopy for Determination of Structural Order of the Myelin Sheath
Coherent Anti-Stokes Raman Scattering (CARS) is a laser-scanning microscopy technique that generates a strong label-free signal in lipid. The myelin sheath surrounding nerves is up to 80% lipid, and therefore is an ideal candidate for CARS imaging. The long lipid chains forming the myelin wraps …
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Nonlinear interferometric vibrational imaging for applications in the study and diagnosis of breast cancer
… in early stages of development. Spontaneous Raman scattering microscopy studies on human breast pathologies have led to models that characterize normal and cancerous breast tissue. This technique, however, is weak and requires long integration times, making it problematic as a clinical …
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Coherent anti-Stokes Raman spectroscopy of diamond
Experiments were performed to investigate Coherent Anti-Stokes Raman Scattering (CARS) in diamond. Aspects of this type of non-linear scattering are presented theoretically, and various experimental configurations were attempted in order to study them. These included the dependence of the CARS …
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Advanced optical microscopy toolkits for non-invasive imaging in oncology
… as well as cellular morphology using coherent Raman scattering (CRS) imaging techniques in the stratum corneum, the most superficial layer of the epidermis; (3) using photoconvertible labels to optically tag cell sub-populations of interest in situ for long-term monitoring of …
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Investigation of stagnation-flow diamond-forming flames using advanced laser diagnostics
… Scanning electron microscopy and surface Raman spectroscopy verified the quality and uniformity of the diamond films deposited with this flame. Coherent anti-Stokes Raman scattering (CARS) spectroscopy of hydrogen was used to measure temperature profiles between the substrate and the …
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Developing Single-Laser Sources for Multimodal Coherent Anti-Stokes Raman Scattering Microscopy
Coherent anti-Stokes Raman scattering (CARS) microscopy has developed rapidly and is opening the door to new types of experiments. This work describes the development of new laser sources for CARS microscopy and their use for different applications. It is specifically focused on multimodal …
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Nonlinear Microscopy for Material Characterization
… solvents. Mathematical modeling of resonant coherent anti-Stokes Raman scattering (CARS), coherent Stokes Raman scattering (CSRS) and stimulated parametric emission (SPE) processes supplement the FWM studies and suggest a resonant CARS process that accounts for ~95% of the total visible FWM …
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Oh cryoprotectant, wherefore art thou cryoprotectant? Investigation of the permeation of common cryoprotectants into live rice callus cells by coherent Raman microscopy
… these mixtures. Vibrational microscopies, like Raman or infrared microscopy, allow the direct visualization of cryoprotectants interacting with living cells. By exciting vibrations unique to the bonds in a molecule, these techniques can effectively image nearly unadulterated molecules. Through …
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Imaging biological water permeability barriers using CARS microscopy
… specificity and spatial resolution. Coherent anti-Stokes Raman scattering (CARS) microscopy, offers a means to visualize the water permeability barrier of biological structures at high resolution within intact systems. In this thesis, water CARS imaging was characterized for …
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Surface functionalized iron oxide nanoparticles for applications in biomedical sciences
… based on impedance (xCELLigence system) and Coherent Anti-Stokes Raman Scattering (CARS) were used to analyze the cell toxicity. The results showed that those methods provided a much deeper insight into the cell viability and proliferation of HepaRG cells. Furthermore, valuable data on the …
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Four-Wave Mixing Techniques Applied to the Investigation of Non-Adiabatic Dynamics in Polyatomic Molecules
… by utilizing the influence of optical as well as Raman resonances on four-wave mixing processes. These resonance effects on third-order, optical processes allow for a high selectivity to be attained with respect to the interrogation of specific aspects of molecular dynamics. The development of …
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Lineare und nichtlineare Raman-Spektroskopie an biologisch relevanten Modellystemen
… Hilfe von diversen linearen und nichtlinearen Raman-spektroskopischen Techniken bearbeitet. Neben der Untersuchung von Wasserstoffbrücken-gebundenen Komplexen und ihrer Dynamik auf der fs-Zeitskala (Kapitel 4) bildeten Untersuchungen zur Struktur von Porphyrinen (Kapitel 5) und beta-Carotin …