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Development of a tuneable laser source in the vacuum ultraviolet and its applications to spectroscopy
Thesis (MSc (Physics))--Stellenbosch University, 2008.
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| Format: | Thesis |
| Language: | English |
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Stellenbosch : Stellenbosch University
2008
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| _version_ | 1867613930998726656 |
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| access_status_str | Open Access |
| author | Dickenson, Gareth David |
| author2 | Steenkamp, Christine M. |
| author_browse | Dickenson, Gareth David Steenkamp, Christine M. |
| author_facet | Steenkamp, Christine M. Dickenson, Gareth David |
| author_sort | Dickenson, Gareth David |
| collection | Thesis |
| dc_rights_str_mv | Stellenbosch University |
| description | Thesis (MSc (Physics))--Stellenbosch University, 2008. |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/1827 |
| institution | Stellenbosch University (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:43:58.501Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository |
| publishDate | 2008 |
| publishDateRange | 2008 |
| publishDateSort | 2008 |
| publisher | Stellenbosch : Stellenbosch University |
| publisherStr | Stellenbosch : Stellenbosch University |
| record_format | dspace |
| source_str | SUNScholar — Stellenbosch University Repository |
| spelling | oai:scholar.sun.ac.za:10019.1/1827 Development of a tuneable laser source in the vacuum ultraviolet and its applications to spectroscopy Dickenson, Gareth David Steenkamp, Christine M. Rohwer, Erich G. Stellenbosch University. Faculty of Science. Dept. of Physics. Nonlinear four wave sum mixing spectroscopy Dissertations -- Physics Theses -- Physics Thesis (MSc (Physics))--Stellenbosch University, 2008. Third harmonic generation (THG) in a metal vapour is a nonlinear optical interaction that facilitates the generation of light in the vacuum ultraviolet (VUV) portion of the electromagnetic spectrum. The requirement of the metal vapour medium is that it has a suitably large third order nonlinear susceptibility. The third order susceptibility is further enhanced by a two photon resonance. Zinc and magnesium vapours are such nonlinear media. The THG process can be phase matched by mixing the metal vapour with a noble gas in a speci c pressure ratio. The metal vapour noble gas mixture needs to be homogeneous and its temperature needs to be constant to within less than a degree Celsius over a path length of 7 cm. These requirements are satis ed by a crossed heat pipe oven. The heat pipe oven makes use of a dynamic liquid-vapour phase equilibrium in sodium in order to maintain a constant temperature of around 800 degrees Celsius, thus facilitating the generation of a stable homogeneous medium of metal vapour and noble gas that can be used for e cient generation of VUV radiation. The development of such a VUV source using zinc vapour and the application of a similar VUV source using magnesium vapour are discussed. The VUV radiation has been applied to laser induced uorescence spectroscopy of carbon monoxide (12C16O and 13C16O). Spectral lines of 20 spin-forbidden singlet-triplet transitions of the e3 − − X1 +(5 0) band were detected and accurate experimental wavelengths determined for the rst time for ve of these lines. 2008-11-24T09:42:27Z 2010-06-01T08:34:17Z 2008-11-24T09:42:27Z 2010-06-01T08:34:17Z 2008-12 Thesis http://hdl.handle.net/10019.1/1827 en Stellenbosch University application/pdf Stellenbosch : Stellenbosch University |
| spellingShingle | Nonlinear four wave sum mixing spectroscopy Dissertations -- Physics Theses -- Physics Dickenson, Gareth David Development of a tuneable laser source in the vacuum ultraviolet and its applications to spectroscopy |
| title | Development of a tuneable laser source in the vacuum ultraviolet and its applications to spectroscopy |
| title_full | Development of a tuneable laser source in the vacuum ultraviolet and its applications to spectroscopy |
| title_fullStr | Development of a tuneable laser source in the vacuum ultraviolet and its applications to spectroscopy |
| title_full_unstemmed | Development of a tuneable laser source in the vacuum ultraviolet and its applications to spectroscopy |
| title_short | Development of a tuneable laser source in the vacuum ultraviolet and its applications to spectroscopy |
| title_sort | development of a tuneable laser source in the vacuum ultraviolet and its applications to spectroscopy |
| topic | Nonlinear four wave sum mixing spectroscopy Dissertations -- Physics Theses -- Physics |
| url | http://hdl.handle.net/10019.1/1827 |
| work_keys_str_mv | AT dickensongarethdavid developmentofatuneablelasersourceinthevacuumultravioletanditsapplicationstospectroscopy |