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Ultrashort optical pulse characterization
Thesis (MSc (Physics))--University of Stellenbosch, 2008.
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| Format: | Thesis |
| Language: | English |
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Stellenbosch : University of Stellenbosch
2008
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| _version_ | 1867614064421634049 |
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| access_status_str | Open Access |
| author | Bosman, Gurthwin Wendell |
| author2 | Rohwer, Erich G. |
| author_browse | Bosman, Gurthwin Wendell Rohwer, Erich G. |
| author_facet | Rohwer, Erich G. Bosman, Gurthwin Wendell |
| author_sort | Bosman, Gurthwin Wendell |
| collection | Thesis |
| dc_rights_str_mv | University of Stellenbosch |
| description | Thesis (MSc (Physics))--University of Stellenbosch, 2008. |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/2090 |
| institution | Stellenbosch University (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:46:06.004Z |
| 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 : University of Stellenbosch |
| publisherStr | Stellenbosch : University of Stellenbosch |
| record_format | dspace |
| source_str | SUNScholar — Stellenbosch University Repository |
| spelling | oai:scholar.sun.ac.za:10019.1/2090 Ultrashort optical pulse characterization Bosman, Gurthwin Wendell Rohwer, Erich G. Von Bergmann, H. M. University of Stellenbosch. Faculty of Science. Dept. of Physics. Femtosecond Dissertations -- Physics Theses -- Physics Laser pulses, Ultrashort Thesis (MSc (Physics))--University of Stellenbosch, 2008. Various autocorrelation techniques are employed to characterize ultrashort laser pulses in both the temporal and spectral domain. These techniques are; interference autocorrelation (IAC), modified spectrum autointerferometric correlation (MOSAIC), background-free autocorrelation (BFA) and frequency resolved optical gating (FROG). All of these techniques are based on the interaction of a pulse with a time delayed copy of itself within a Â(2) medium. Experimental setups for BFA and FROG experiments are developed, which exploit the phenomenon of second harmonic generation (SHG). An existing IAC setup is used for temporal pulse characterization. MOSAIC results are obtained through applying a specific Fourier filter to the IAC data. IAC and MOSAIC measurements performed on a commercially available femtosecond laser, indicate that the emitted pulse has a pulse duration less than 150 fs and possesses positive linear chirp. BFA and FROG measurements carried out on the same laser system mirror these results. Pulses emitted by a 20 Hz chirped pulse amplifier are characterized through BFA and FROG. BFA results suggest that the pulse from the amplifier is actually a double pulse. FROG results indicate that the pulse is highly chirped. The experiments and physical interpretations presented in this work demonstrate the preferred methods of optical pulse characterization for ultrashort laser pulses. 2008-05-07T13:03:49Z 2010-06-01T08:40:18Z 2008-05-07T13:03:49Z 2010-06-01T08:40:18Z 2008-03 Thesis http://hdl.handle.net/10019.1/2090 en University of Stellenbosch 2340645 bytes application/pdf application/pdf Stellenbosch : University of Stellenbosch |
| spellingShingle | Femtosecond Dissertations -- Physics Theses -- Physics Laser pulses, Ultrashort Bosman, Gurthwin Wendell Ultrashort optical pulse characterization |
| title | Ultrashort optical pulse characterization |
| title_full | Ultrashort optical pulse characterization |
| title_fullStr | Ultrashort optical pulse characterization |
| title_full_unstemmed | Ultrashort optical pulse characterization |
| title_short | Ultrashort optical pulse characterization |
| title_sort | ultrashort optical pulse characterization |
| topic | Femtosecond Dissertations -- Physics Theses -- Physics Laser pulses, Ultrashort |
| url | http://hdl.handle.net/10019.1/2090 |
| work_keys_str_mv | AT bosmangurthwinwendell ultrashortopticalpulsecharacterization |