Picosecond photoluminescence measurements of Landau level lifetimes and time dependent Landau level linebroadening in modulation-doped GaAs-GaAlAs multiple quantum wells
We report the first picosecond time-resolved photoluminescence measurementsof hot-carrier relaxation in a modulation-doped GaAs-GaAlAs MQW in the presence of strong magnetic fields. We have measured the lifetimes of carriers in excited Landau levels and have determined the time-dependent carrier tem...
| Main Authors: | , , , |
|---|---|
| Format: | Journal article |
| Language: | English |
| Published: |
1985
|
| _version_ | 1797101385371615232 |
|---|---|
| author | Ryan, J Taylor, R Turberfield, A Worlock, J |
| author_facet | Ryan, J Taylor, R Turberfield, A Worlock, J |
| author_sort | Ryan, J |
| collection | OXFORD |
| description | We report the first picosecond time-resolved photoluminescence measurementsof hot-carrier relaxation in a modulation-doped GaAs-GaAlAs MQW in the presence of strong magnetic fields. We have measured the lifetimes of carriers in excited Landau levels and have determined the time-dependent carrier temperature. We find that the cooling rate is slower in applied field tthan at B=0; also there is a significant increase in the cooling rate for B {greater-than or approximate} 10T. We report also the observation of highly time-dependent linewidths of the Landau levels. © 1985. |
| first_indexed | 2024-03-07T05:51:09Z |
| format | Journal article |
| id | oxford-uuid:e8ec9b49-93e4-4535-9979-d1735727efe5 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T05:51:09Z |
| publishDate | 1985 |
| record_format | dspace |
| spelling | oxford-uuid:e8ec9b49-93e4-4535-9979-d1735727efe52022-03-27T10:50:27ZPicosecond photoluminescence measurements of Landau level lifetimes and time dependent Landau level linebroadening in modulation-doped GaAs-GaAlAs multiple quantum wellsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:e8ec9b49-93e4-4535-9979-d1735727efe5EnglishSymplectic Elements at Oxford1985Ryan, JTaylor, RTurberfield, AWorlock, JWe report the first picosecond time-resolved photoluminescence measurementsof hot-carrier relaxation in a modulation-doped GaAs-GaAlAs MQW in the presence of strong magnetic fields. We have measured the lifetimes of carriers in excited Landau levels and have determined the time-dependent carrier temperature. We find that the cooling rate is slower in applied field tthan at B=0; also there is a significant increase in the cooling rate for B {greater-than or approximate} 10T. We report also the observation of highly time-dependent linewidths of the Landau levels. © 1985. |
| spellingShingle | Ryan, J Taylor, R Turberfield, A Worlock, J Picosecond photoluminescence measurements of Landau level lifetimes and time dependent Landau level linebroadening in modulation-doped GaAs-GaAlAs multiple quantum wells |
| title | Picosecond photoluminescence measurements of Landau level lifetimes and time dependent Landau level linebroadening in modulation-doped GaAs-GaAlAs multiple quantum wells |
| title_full | Picosecond photoluminescence measurements of Landau level lifetimes and time dependent Landau level linebroadening in modulation-doped GaAs-GaAlAs multiple quantum wells |
| title_fullStr | Picosecond photoluminescence measurements of Landau level lifetimes and time dependent Landau level linebroadening in modulation-doped GaAs-GaAlAs multiple quantum wells |
| title_full_unstemmed | Picosecond photoluminescence measurements of Landau level lifetimes and time dependent Landau level linebroadening in modulation-doped GaAs-GaAlAs multiple quantum wells |
| title_short | Picosecond photoluminescence measurements of Landau level lifetimes and time dependent Landau level linebroadening in modulation-doped GaAs-GaAlAs multiple quantum wells |
| title_sort | picosecond photoluminescence measurements of landau level lifetimes and time dependent landau level linebroadening in modulation doped gaas gaalas multiple quantum wells |
| work_keys_str_mv | AT ryanj picosecondphotoluminescencemeasurementsoflandaulevellifetimesandtimedependentlandaulevellinebroadeninginmodulationdopedgaasgaalasmultiplequantumwells AT taylorr picosecondphotoluminescencemeasurementsoflandaulevellifetimesandtimedependentlandaulevellinebroadeninginmodulationdopedgaasgaalasmultiplequantumwells AT turberfielda picosecondphotoluminescencemeasurementsoflandaulevellifetimesandtimedependentlandaulevellinebroadeninginmodulationdopedgaasgaalasmultiplequantumwells AT worlockj picosecondphotoluminescencemeasurementsoflandaulevellifetimesandtimedependentlandaulevellinebroadeninginmodulationdopedgaasgaalasmultiplequantumwells |