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物理学报. 2004, 53(4): 1195-1200.
doi: 10.7498/aps.53.1195.
用Ξ形四能级模型研究非对称耦合量子阱非定域激子复合发光
- 收稿日期: 2003-06-30
- 修回日期: 2003-07-31
- 刊出日期: 2004-02-05
English Abstract
Study of luminescence due to delocalized exciton recombination in asymmetric-coupled quantum well structure based on Ξ-type configuration
- Received Date:
30 June 2003
- Accepted Date:
31 July 2003
- Published Online:
05 February 2004
Abstract: The luminescence properties due to the delocalized exciton recombination in the asymmetric-coupled quantum well (ACQW) structure have been studied based on Ξ-type configuration.We show that the luminescence has mainly two emission peaks:one peak corresponds to the red shift relative to the central transition frequency and the other to the blue shift.Compared with the single quantum well,this quantum-confined Stark shift is very sensitive to electric field.This means that the coupling between two wells for an ACQW structure leads to the enhancement of the quantum-confined Stark effect.From this optical property of ACQW,novel ultrafast optical modulation devices and optical switch fabricated with ACQW structure can be expected in the future optical communication system.
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