Sökning: "Coherent anti-Stokes Raman Scattering"
Visar resultat 1 - 5 av 11 avhandlingar innehållade orden Coherent anti-Stokes Raman Scattering.
1. Rotational Coherent Anti-Stokes Raman Spectroscopy - Development and Applications
Sammanfattning : During the last decades, coherent anti-Stokes Raman spectroscopy (CARS) has been an important tool in combustion research. The focus of this thesis is the improvement of the capability of the pure rotational CARS (RCARS) technique for this type of applications. LÄS MER
2. Theoretical Studies of Raman Scattering
Sammanfattning : Different theoretical approaches have been presented in this thesis to study the Raman scattering effect. The first one is response theory applied up to third order of polarization, where the determination of α, β and γ is used to calculate linear Raman scattering (resonance Raman scattering (RRS) and normal Raman scattering (NRS)), hyper Raman scattering (HRS) and coherent anti-Stokes Raman scattering (CARS), respectively. LÄS MER
3. Development and Application of Pure Rotational CARS for Reactive Flows
Sammanfattning : The thesis deals with the further development of pure rotational coherent anti-Stokes Raman spectroscopy (RCARS) for improving the capabilities of gas phase thermometry. The main effort has been to make the technique more robust when employed under a wide range of temperatures and operational conditions. LÄS MER
4. Application of Laser Techniques for Combustion Studies
Sammanfattning : The aim for this work has been to increase the applicability of laser spectroscopy techniques for studies of combustion processes, both what regards in-flame experiments, exhaust-gas analysis and remote sensing of the atmosphere. Raman spectroscopy has been used for analysis of exhaust gases from flames, model fires of wood and for inflame measurements. LÄS MER
5. Development and Application of Single-Ended Picosecond Laser Diagnostics
Sammanfattning : Light detection and ranging (lidar), a method for nonintrusive, single-ended, and range resolved measurements, has been developed and applied for combustion related diagnostics. Employing picosecond laser pulse durations and detectors providing temporal resolution on the order of picoseconds, lidar has been applied successfully for both quantitative temperature- and species concentration measurements, obtaining an ultimate range resolution of 0. LÄS MER