Carrier transport, ultrafast spin dynamics and polarisation switching in InGaAsP multiple quantum wells

D Marshall, A Miller

Research output: Contribution to journalArticle

20 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)1019-1034
Number of pages16
JournalOptical and Quantum Electronics
Volume33
Issue number7-10
Publication statusPublished - Jul 2001

Keywords

  • carrier transport
  • polarisation switching
  • InGaAsP multiple quantum wells
  • EXCITONIC OPTICAL NONLINEARITIES
  • ROOM-TEMPERATURE
  • RELAXATION DYNAMICS
  • SEMICONDUCTORS
  • DIFFUSION

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