Effects of magnetic field and optical fluence on terahertz emission in gallium arsenide
The excitation density dependence of magnetic-field-enhanced terahertz (THz = 1012 Hz) emission from (100) GaAs is studied. It is found that THz power saturates at a higher optical-excitation density, when a magnetic field is applied. This observation explains the different magnetic field enhancemen...
| Главные авторы: | , , , , , , , |
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| Формат: | Journal article |
| Язык: | English |
| Опубликовано: |
2001
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| _version_ | 1826273745191305216 |
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| author | Corchia, A McLaughlin, R Johnston, M Whittaker, D Arnone, D Linfield, E Davies, A Pepper, M |
| author_facet | Corchia, A McLaughlin, R Johnston, M Whittaker, D Arnone, D Linfield, E Davies, A Pepper, M |
| author_sort | Corchia, A |
| collection | OXFORD |
| description | The excitation density dependence of magnetic-field-enhanced terahertz (THz = 1012 Hz) emission from (100) GaAs is studied. It is found that THz power saturates at a higher optical-excitation density, when a magnetic field is applied. This observation explains the different magnetic field enhancements that have been reported recently. At low excitation densities the results are shown to be consistent with a simple model of carrier-carrier scattering, whilst at higher densities surface field screening becomes important. |
| first_indexed | 2024-03-06T22:32:53Z |
| format | Journal article |
| id | oxford-uuid:58dbb1bd-fe76-44b7-b36f-db7aa8b1337b |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T22:32:53Z |
| publishDate | 2001 |
| record_format | dspace |
| spelling | oxford-uuid:58dbb1bd-fe76-44b7-b36f-db7aa8b1337b2022-03-26T17:06:17ZEffects of magnetic field and optical fluence on terahertz emission in gallium arsenideJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:58dbb1bd-fe76-44b7-b36f-db7aa8b1337bEnglishSymplectic Elements at Oxford2001Corchia, AMcLaughlin, RJohnston, MWhittaker, DArnone, DLinfield, EDavies, APepper, MThe excitation density dependence of magnetic-field-enhanced terahertz (THz = 1012 Hz) emission from (100) GaAs is studied. It is found that THz power saturates at a higher optical-excitation density, when a magnetic field is applied. This observation explains the different magnetic field enhancements that have been reported recently. At low excitation densities the results are shown to be consistent with a simple model of carrier-carrier scattering, whilst at higher densities surface field screening becomes important. |
| spellingShingle | Corchia, A McLaughlin, R Johnston, M Whittaker, D Arnone, D Linfield, E Davies, A Pepper, M Effects of magnetic field and optical fluence on terahertz emission in gallium arsenide |
| title | Effects of magnetic field and optical fluence on terahertz emission in gallium arsenide |
| title_full | Effects of magnetic field and optical fluence on terahertz emission in gallium arsenide |
| title_fullStr | Effects of magnetic field and optical fluence on terahertz emission in gallium arsenide |
| title_full_unstemmed | Effects of magnetic field and optical fluence on terahertz emission in gallium arsenide |
| title_short | Effects of magnetic field and optical fluence on terahertz emission in gallium arsenide |
| title_sort | effects of magnetic field and optical fluence on terahertz emission in gallium arsenide |
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