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Towards the development of a MIR NOPA for time-domain ptychography
Thesis (MSc)--Stellenbosch University, 2021.
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| Format: | Thesis |
| Language: | en_ZA |
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Stellenbosch : Stellenbosch University
2021
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| _version_ | 1867613886514987008 |
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| access_status_str | Open Access |
| author | De Beer, Anthonie |
| author2 | Bosman, Gurthwin W. |
| author_browse | Bosman, Gurthwin W. De Beer, Anthonie |
| author_facet | Bosman, Gurthwin W. De Beer, Anthonie |
| author_sort | De Beer, Anthonie |
| collection | Thesis |
| dc_rights_str_mv | Stellenbosch University |
| description | Thesis (MSc)--Stellenbosch University, 2021. |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/110358 |
| institution | Stellenbosch University (South Africa) |
| language | en_ZA |
| last_indexed | 2026-06-10T12:43:15.981Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| publisher | Stellenbosch : Stellenbosch University |
| publisherStr | Stellenbosch : Stellenbosch University |
| record_format | dspace |
| source_str | SUNScholar — Stellenbosch University Repository |
| spelling | oai:scholar.sun.ac.za:10019.1/110358 Towards the development of a MIR NOPA for time-domain ptychography De Beer, Anthonie Bosman, Gurthwin W. Neethling, Pieter H. Stellenbosch University. Faculty of Science. Dept. of Physics. Ultrafast mid-infrared light UCTD Time-domain analysis Ptychography Parametric amplifiers Infrared spectroscopy Mid-infrared light Thesis (MSc)--Stellenbosch University, 2021. ENGLISH ABSTRACT: This thesis discusses a noncollinear optical parametric amplifier as a source of ultrafast mid-infrared light for spectroscopic experiments and aims to provide a consistent method for the generation thereof. The underlining theory and fundamental principles of this device is outlined as well as various experimental considerations. A design for an experimental setup to generate suitable ultrafast mid-infrared light is proposed and preliminary optical devices are implemented. Generation of a 160 nm bandwidth, near-infrared supercontinuum centred at 1067 nm is shown to be inadequate for the generation of mid-infrared pulses. Parasitic second harmonic-, sum frequency and difference frequency generation processes are also shown to impede mid-infrared generation. These restricting experimental phenomena are highlighted and methods to bypass these limits are given. Finally, as a demonstration of usefulness of such a source of infrared pulses, the novel time-domain ptychographic measurement, HIPPY, of a material’s response to mid-infrared light is simulated. AFRIKAANSE OPSOMMING: Hierdie tesis bespreek die gebruik van ‘n nie-kolineêre optiese parametriese versterker as ‘n bron van ultravinnige middelinfrarooi ligpulse en poog om ‘n metode te voor te lê vir die generasie daarvan. The onderliggende teorie en fundamentele beginsels van hierdie optiese toestel word bespreek asook verskeie eksperimentele oorwegings aangaande die ontwerp. ‘n Ontwerp van ‘n optiese toestel vir die generering van ultravinnige middelinfrarooi lig word voorgestel en voorafgaande eksperimentele opstellings is geimplementeer. Die generasie van ‘n supercontinuum pulse by 1067 nm met ‘n bandwydte van 160 fs word getoon om ongepas te wees vir middleinfrarooi pulse generasie. Parasitiese tweede harmoniek-, som frekwensie- en verskil frekwensie generasie prosesse word ook getoon om middelinfrarooi generasie te verhoed. Verskynsels wat hierdie generasie belemmer word uitgelig met voorgestelde metodes om dit te beperk. Laastens, as ‘n demonstrasie van die nut van infrarooi pulse, is ‘n nuwe tyd gebieds tigografiese tegniek, HIPPY, gesimuleer Masters 2021-04-28T12:52:23Z 2021-04-28T12:52:23Z 2021-03 Thesis http://hdl.handle.net/10019.1/110358 en_ZA Stellenbosch University x, 45 pages : illustrations application/pdf Stellenbosch : Stellenbosch University |
| spellingShingle | Ultrafast mid-infrared light UCTD Time-domain analysis Ptychography Parametric amplifiers Infrared spectroscopy Mid-infrared light De Beer, Anthonie Towards the development of a MIR NOPA for time-domain ptychography |
| title | Towards the development of a MIR NOPA for time-domain ptychography |
| title_full | Towards the development of a MIR NOPA for time-domain ptychography |
| title_fullStr | Towards the development of a MIR NOPA for time-domain ptychography |
| title_full_unstemmed | Towards the development of a MIR NOPA for time-domain ptychography |
| title_short | Towards the development of a MIR NOPA for time-domain ptychography |
| title_sort | towards the development of a mir nopa for time domain ptychography |
| topic | Ultrafast mid-infrared light UCTD Time-domain analysis Ptychography Parametric amplifiers Infrared spectroscopy Mid-infrared light |
| url | http://hdl.handle.net/10019.1/110358 |
| work_keys_str_mv | AT debeeranthonie towardsthedevelopmentofamirnopafortimedomainptychography |