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Wavelength-Agile Rayleigh Scattering by use of an Atomic Vapor Cell

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Pertzborn,Amand ... _MS_atomic_vapor_chirp.pdf 3.399Mb application/pdf View/Open
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dc.contributor.advisor Sanders, Scott T.
dc.contributor.author Pertzborn, Amanda Jo
dc.date.accessioned 2006-03-21T17:42:26Z
dc.date.available 2006-03-21T17:42:26Z
dc.date.issued 2005
dc.identifier.uri http://digital.library.wisc.edu/1793/6520
dc.description Pages: 198 en
dc.description.abstract A wavelength-agile technique using an atomic vapor cell is developed and applied to the measurement of Rayleigh scattering. The atomic vapor cell displays a steep change in refractive index as a function of wavelength, thereby creating a wavelength scan over a narrow spectral range. This scan can be utilized for high resolution spectral measurements. For example, a short pulse duration laser was input into the cell and the resulting wavelength-agile scan was used to resolve a single iodine absorption feature. These measurements revealed that the atomic vapor cell distorts the input pulse shape and therefore this technique must be used with care. A wavelength-agile scan of the Rayleigh scattering spectrum was created using the atomic vapor cell; the resolved Rayleigh scattering spectrum can be compared to theory to obtain the temperature, pressure, and velocity of the scattering medium. The overall goal of this research was to direct light scattered by the gas in a vortex tube into the atomic vapor cell in order to create a wavelength-agile Rayleigh scattering spectrum. The temperature, pressure, and velocity at the scattering location would be resolved from the results of this time-of-flight technique. In this research only the scattering in a fiber was measured due to experimental difficulties. The results of this measurement indicate that this wavelength-agile Rayleigh scattering technique is difficult. Rayleigh scattering is extremely weak and therefore difficult to measure while the atomic vapor cell distorts the light passing through it. en
dc.description.provenance Made available in DSpace on 2006-03-21T17:42:26Z (GMT). No. of bitstreams: 1 Pertzborn2005.pdf: 3251577 bytes, checksum: adc4ce9e5daa768a0a67cdefe8c38d25 (MD5) en
dc.description.provenance Submitted by Eric Larson (ewlarson@wisc.edu) on 2006-03-21T17:24:24Z No. of bitstreams: 1 Pertzborn2005.pdf: 3251577 bytes, checksum: adc4ce9e5daa768a0a67cdefe8c38d25 (MD5) en
dc.description.provenance Approved for entry into archive by Eric Larson(ewlarson@wisc.edu) on 2006-03-21T17:42:26Z (GMT) No. of bitstreams: 1 Pertzborn2005.pdf: 3251577 bytes, checksum: adc4ce9e5daa768a0a67cdefe8c38d25 (MD5) en
dc.description.sponsorship National Science Foundation under Grant No. CTS-0242219. en
dc.format.extent 3251577 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US
dc.subject University of Wisconsin--Madison. College of Engineering. en
dc.subject Thesis (M.S.)--University of Wisconsin--Madison, 2005. en
dc.title Wavelength-Agile Rayleigh Scattering by use of an Atomic Vapor Cell en
dc.type Thesis en
thesis.degree.discipline Mechanical Engineering en

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