Coherent anti-Stokes Raman spectroscopy of diamond

dc.contributor.advisorRobertson, Geralden_ZA
dc.contributor.advisorDriver, Steveen_ZA
dc.contributor.authorViranna, Narendra Balaguruen_ZA
dc.date.accessioned2017-11-14T13:49:10Z
dc.date.available2017-11-14T13:49:10Z
dc.date.issued1997en_ZA
dc.date.updated2017-03-27T12:37:01Z
dc.description.abstractExperiments 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 signal intensity on the intensities of the two exciting frequency-doubled Nd:YAG (pump) and dye (Stokes) lasers, the variation of the CARS signal polarization as a function of the lasers' polarization, and the dependence of the CARS signal intensity on the phase mismatch of the laser beams. The phase mismatch measurement confirmed the predicted sinc² nature of the CARS signal intensity, while· the polarization measurements provided new information on the ratio of the non-vanishing components of the cubic susceptibility x³ of diamond. The CARS signal intensity was found to change linearly with the dye laser intensity and quadratically with the Nd: Y AG laser intensity. The CARS signal was found at the predicted 1332 cm⁻¹ shift from the doubled Nd:YAG emission, and its linewidth of 1.2 cm⁻¹ is in agreement with the spontaneous Raman linewidth.The spectral data were fitted to a modified Voigt profile containing the non-resonant cubic susceptibility contribution, and this allowed us to establish the ratio of the resonant and non-resonant parts of x³. An attempt to generate Stimulated Raman Scattering in diamond was unsuccessful.en_ZA
dc.identifier.apacitationViranna, N. B. (1997). <i>Coherent anti-Stokes Raman spectroscopy of diamond</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Physics. Retrieved from http://hdl.handle.net/11427/26229en_ZA
dc.identifier.chicagocitationViranna, Narendra Balaguru. <i>"Coherent anti-Stokes Raman spectroscopy of diamond."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Physics, 1997. http://hdl.handle.net/11427/26229en_ZA
dc.identifier.citationViranna, N. 1997. Coherent anti-Stokes Raman spectroscopy of diamond. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Viranna, Narendra Balaguru AB - 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 signal intensity on the intensities of the two exciting frequency-doubled Nd:YAG (pump) and dye (Stokes) lasers, the variation of the CARS signal polarization as a function of the lasers' polarization, and the dependence of the CARS signal intensity on the phase mismatch of the laser beams. The phase mismatch measurement confirmed the predicted sinc² nature of the CARS signal intensity, while· the polarization measurements provided new information on the ratio of the non-vanishing components of the cubic susceptibility x³ of diamond. The CARS signal intensity was found to change linearly with the dye laser intensity and quadratically with the Nd: Y AG laser intensity. The CARS signal was found at the predicted 1332 cm⁻¹ shift from the doubled Nd:YAG emission, and its linewidth of 1.2 cm⁻¹ is in agreement with the spontaneous Raman linewidth.The spectral data were fitted to a modified Voigt profile containing the non-resonant cubic susceptibility contribution, and this allowed us to establish the ratio of the resonant and non-resonant parts of x³. An attempt to generate Stimulated Raman Scattering in diamond was unsuccessful. DA - 1997 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1997 T1 - Coherent anti-Stokes Raman spectroscopy of diamond TI - Coherent anti-Stokes Raman spectroscopy of diamond UR - http://hdl.handle.net/11427/26229 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/26229
dc.identifier.vancouvercitationViranna NB. Coherent anti-Stokes Raman spectroscopy of diamond. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Physics, 1997 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/26229en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Physicsen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherPhysicsen_ZA
dc.titleCoherent anti-Stokes Raman spectroscopy of diamonden_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMScen_ZA
uct.type.filetype
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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