| Автор | G V M Williams |
| Автор | C C Phillips |
| Автор | K Woodbridge |
| Дата выпуска | 1994-05-02 |
| dc.description | Low-temperature time-resolved degenerate four-wave mixing (DFWM), single-beam excite/probe and transient grating measurements have been performed on In<sub>x</sub>Ga<sub>1-x</sub>As/GaAs superlattices with thin ( approximately 6 nm) In<sub>x</sub>Ga<sub>1-x</sub>As wells. We find weak dephasing of heavy-hole (hh) excitons by acoustic phonons. The hh exciton homogeneous linewidth temperature coefficient is 1.9+or-1 mu eV K<sup>-1</sup>. The low-temperature hh exciton optical nonlinearity is successfully modelled in terms of exciton phase-space filling and exchange interactions in the hh exciton gas. From low-temperature transient grating measurements we find hh exciton in-plane mobilities as high as 6.7*10<sup>4</sup> cm<sup>2</sup> V<sup>-1</sup> s<sup>-1</sup> and mobilities which are greater in superlattices with thinner barriers. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Time-resolved DFWM, excite/probe and transient grating studies of In<sub>x</sub>Ga<sub>1-x</sub>As/GaAs superlattices |
| Тип | paper |
| DOI | 10.1088/0268-1242/9/5/014 |
| Electronic ISSN | 1361-6641 |
| Print ISSN | 0268-1242 |
| Журнал | Semiconductor Science and Technology |
| Том | 9 |
| Первая страница | 1096 |
| Последняя страница | 1101 |
| Аффилиация | G V M Williams; Blackett Lab., Imperial Coll. of Sci., Technol. & Med., London, UK |
| Аффилиация | C C Phillips; Blackett Lab., Imperial Coll. of Sci., Technol. & Med., London, UK |
| Аффилиация | K Woodbridge; Blackett Lab., Imperial Coll. of Sci., Technol. & Med., London, UK |
| Выпуск | 5 |
