Carrier transport, ultrafast spin dynamics and polarisation switching in InGaAsP multiple quantum wells |
| |
Authors: | D Marshall A Miller |
| |
Institution: | 1. School of Physics and Astronomy, University of St Andrews, St Andrews, Fife, KY16 9SS, Scotland
|
| |
Abstract: | Excitonic optical nonlinearities are exploited in room temperature InGaAsP multiple quantum wells to determine the in-well carrier mobilities and spin relaxation processes. The picosecond time scale of the spin relaxation leads to the creation of a fast all-optical polarisation switch by using a circular polarised excite and a linear polarised probe pulse. It is demonstrated that the operation of the switch is dependent on the sense of circular polarisation of the probe. An optically induced birefringence is identified. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|