Full Text Available
Note: Clicking the button above will open the full text document at the original institutional repository in a new window.
Spectral characterization of materials using terahertz time domain spectroscopy (THz-TDS)
Thesis (MSc)--Stellenbosch University, 2014.
Saved in:
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Thesis |
| Language: | en_ZA |
| Published: |
Stellenbosch : Stellenbosch University
2015
|
| Subjects: | |
| Tags: |
No Tags, Be the first to tag this record!
|
| _version_ | 1867613865972334592 |
|---|---|
| access_status_str | Open Access |
| author | Hissen, Huzifa Zain Alabdeen Abdarahman |
| author2 | Rohwer, Erich G. |
| author_browse | Hissen, Huzifa Zain Alabdeen Abdarahman Rohwer, Erich G. |
| author_facet | Rohwer, Erich G. Hissen, Huzifa Zain Alabdeen Abdarahman |
| author_sort | Hissen, Huzifa Zain Alabdeen Abdarahman |
| collection | Thesis |
| dc_rights_str_mv | Stellenbosch University |
| description | Thesis (MSc)--Stellenbosch University, 2014. |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/96030 |
| institution | Stellenbosch University (South Africa) |
| language | en_ZA |
| last_indexed | 2026-06-10T12:42:55.322Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository |
| publishDate | 2015 |
| publishDateRange | 2015 |
| publishDateSort | 2015 |
| publisher | Stellenbosch : Stellenbosch University |
| publisherStr | Stellenbosch : Stellenbosch University |
| record_format | dspace |
| source_str | SUNScholar — Stellenbosch University Repository |
| spelling | oai:scholar.sun.ac.za:10019.1/96030 Spectral characterization of materials using terahertz time domain spectroscopy (THz-TDS) Hissen, Huzifa Zain Alabdeen Abdarahman Rohwer, Erich G. Neethling, Pieter H. Stellenbosch University. Faculty of Science. Dept. of Physics. Terahertz spectroscopy Time-domain analysis Material science Refractive index Absorption coefficient Dissertations -- Physics Theses -- Physics UCTD Thesis (MSc)--Stellenbosch University, 2014. ENGLISH ABSTRACT: Terahertz (THz) radiation is often used in many promising applications such as information and communication technology and airport security. Optimized and adapted terahertz fields hold huge promise for leading this technology further. This study is focused on terahertz time domain spectroscopy (THz-TDS). In THz-TDS the electric field is measured, therefore both amplitude and phase information of the THz pulse can be obtained. We used the pump-probe technique in order to measure a THz pulse from the photoconductive antenna. A pulsed fiber laser with FWHM of ' 100 fs was used for this. The frequency spectrum of the measured THz pulse was obtained via a fast Fourier transform. We studied the principles of the THz pulse generation as well as detection, with a photoconductive antenna as emitter and detector. In this study terahertz spectroscopy has been used to investigate the refractive index and absorption coefficient of different types of materials in the terahertz region. The last part of this study deals with a simple process for material parameter extraction of a polymer sample using commercial software called Teramat1.0. It uses the sample thickness, the reference THz pulse and the transmitted THz pulse to retrieve the complex refractive index of the sample. AFRIKAANSE OPSOMMING: Terahertz (THz) straling word gereeld gebruik vir belowende toepassings soos inligting en kommunikasie tegnologie en lughawe sekuriteit. Geoptimeerde en aangepaste terahertz velde dra by tot die bevordering van die tegnologie. Hierdie studie fokus op terahertz tyd domein spektroskopie (THz-TDS). In THz-TDS word die elektriese veld gemeet en dus word beide amplitude en fase inligting van die THz puls verkry. Ons gebruik ’n pomp en toets tegniek om die THz puls deur ’n fotogeleidende antenna te bepaal. ’n Gepulseerde vesel laser met FWHM van 100 fs word hiervoor benut. Die frekwensie spektrum van die gemete THz puls word bereken deur ’n vinnige Fourier transvorm te bereken. Die beginsels van die generering en deteksie van THz pulse is bestudeer met ’n fotogeleidende antenna as sender en ontvanger. In die studie is terahertz spektroskopie gebruik om die brekingsindekse en die absorpsie koeffisiënte van verskillende materiale in die terahertz gebied te bepaal. Die laaste gedeelte van die studie handel oor ’n eenvoudige proses om die materiaal parameters van ’n polimeer te bepaal deur gebruik te maak van kommersiële sagteware Teramat 1.0. Die monster dikte, die THz verwysingspuls en die deurgelate puls word gebruik om die komplekse brekingsindeks van die materiaal te bereken. 2015-01-13T11:49:41Z 2015-01-13T11:49:41Z 2014-12 Thesis http://hdl.handle.net/10019.1/96030 en_ZA Stellenbosch University xiv, 99 p. application/pdf Stellenbosch : Stellenbosch University |
| spellingShingle | Terahertz spectroscopy Time-domain analysis Material science Refractive index Absorption coefficient Dissertations -- Physics Theses -- Physics UCTD Hissen, Huzifa Zain Alabdeen Abdarahman Spectral characterization of materials using terahertz time domain spectroscopy (THz-TDS) |
| title | Spectral characterization of materials using terahertz time domain spectroscopy (THz-TDS) |
| title_full | Spectral characterization of materials using terahertz time domain spectroscopy (THz-TDS) |
| title_fullStr | Spectral characterization of materials using terahertz time domain spectroscopy (THz-TDS) |
| title_full_unstemmed | Spectral characterization of materials using terahertz time domain spectroscopy (THz-TDS) |
| title_short | Spectral characterization of materials using terahertz time domain spectroscopy (THz-TDS) |
| title_sort | spectral characterization of materials using terahertz time domain spectroscopy thz tds |
| topic | Terahertz spectroscopy Time-domain analysis Material science Refractive index Absorption coefficient Dissertations -- Physics Theses -- Physics UCTD |
| url | http://hdl.handle.net/10019.1/96030 |
| work_keys_str_mv | AT hissenhuzifazainalabdeenabdarahman spectralcharacterizationofmaterialsusingterahertztimedomainspectroscopythztds |